Java Code Examples for org.apache.flink.streaming.connectors.kinesis.testutils.FakeKinesisBehavioursFactory#nonReshardedStreamsBehaviour()

The following examples show how to use org.apache.flink.streaming.connectors.kinesis.testutils.FakeKinesisBehavioursFactory#nonReshardedStreamsBehaviour() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: KinesisDataFetcherTest.java From flink with Apache License 2.0

4 votes

@Test
public void testStreamToLastSeenShardStateIsCorrectlySetWhenNoNewShardsSinceRestoredCheckpoint() throws Exception {
	List<String> fakeStreams = new LinkedList<>();
	fakeStreams.add("fakeStream1");
	fakeStreams.add("fakeStream2");

	Map<StreamShardHandle, String> restoredStateUnderTest = new HashMap<>();

	// fakeStream1 has 3 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(2))),
		UUID.randomUUID().toString());

	// fakeStream2 has 2 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());

	Map<String, Integer> streamToShardCount = new HashMap<>();
	streamToShardCount.put("fakeStream1", 3); // fakeStream1 will still have 3 shards after restore
	streamToShardCount.put("fakeStream2", 2); // fakeStream2 will still have 2 shards after restore

	HashMap<String, String> subscribedStreamsToLastSeenShardIdsUnderTest =
		KinesisDataFetcher.createInitialSubscribedStreamsToLastDiscoveredShardsState(fakeStreams);

	final TestableKinesisDataFetcher<String> fetcher =
		new TestableKinesisDataFetcher<>(
			fakeStreams,
			new TestSourceContext<>(),
			TestUtils.getStandardProperties(),
			new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
			10,
			2,
			new AtomicReference<>(),
			new LinkedList<>(),
			subscribedStreamsToLastSeenShardIdsUnderTest,
			FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(streamToShardCount));

	for (Map.Entry<StreamShardHandle, String> restoredState : restoredStateUnderTest.entrySet()) {
		fetcher.advanceLastDiscoveredShardOfStream(restoredState.getKey().getStreamName(), restoredState.getKey().getShard().getShardId());
		fetcher.registerNewSubscribedShardState(
			new KinesisStreamShardState(KinesisDataFetcher.convertToStreamShardMetadata(restoredState.getKey()),
				restoredState.getKey(), new SequenceNumber(restoredState.getValue())));
	}

	CheckedThread runFetcherThread = new CheckedThread() {
		@Override
		public void go() throws Exception {
			fetcher.runFetcher();
		}
	};
	runFetcherThread.start();

	fetcher.waitUntilInitialDiscovery();
	fetcher.shutdownFetcher();
	runFetcherThread.sync();

	// assert that the streams tracked in the state are identical to the subscribed streams
	Set<String> streamsInState = subscribedStreamsToLastSeenShardIdsUnderTest.keySet();
	assertEquals(fakeStreams.size(), streamsInState.size());
	assertTrue(streamsInState.containsAll(fakeStreams));

	// assert that the last seen shards in state is correctly set
	for (Map.Entry<String, String> streamToLastSeenShard : subscribedStreamsToLastSeenShardIdsUnderTest.entrySet()) {
		assertEquals(
			KinesisShardIdGenerator.generateFromShardOrder(streamToShardCount.get(streamToLastSeenShard.getKey()) - 1),
			streamToLastSeenShard.getValue());
	}
}

Example 2

Source File: KinesisDataFetcherTest.java From flink with Apache License 2.0

4 votes

@Test
public void testStreamToLastSeenShardStateIsCorrectlySetWhenNewShardsFoundSinceRestoredCheckpoint() throws Exception {
	List<String> fakeStreams = new LinkedList<>();
	fakeStreams.add("fakeStream1");
	fakeStreams.add("fakeStream2");

	Map<StreamShardHandle, String> restoredStateUnderTest = new HashMap<>();

	// fakeStream1 has 3 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(2))),
		UUID.randomUUID().toString());

	// fakeStream2 has 2 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());

	Map<String, Integer> streamToShardCount = new HashMap<>();
	streamToShardCount.put("fakeStream1", 3 + 1); // fakeStream1 had 3 shards before & 1 new shard after restore
	streamToShardCount.put("fakeStream2", 2 + 3); // fakeStream2 had 2 shards before & 3 new shard after restore

	HashMap<String, String> subscribedStreamsToLastSeenShardIdsUnderTest =
		KinesisDataFetcher.createInitialSubscribedStreamsToLastDiscoveredShardsState(fakeStreams);

	// using a non-resharded streams kinesis behaviour to represent that Kinesis is not resharded AFTER the restore
	final TestableKinesisDataFetcher<String> fetcher =
		new TestableKinesisDataFetcher<>(
			fakeStreams,
			new TestSourceContext<>(),
			TestUtils.getStandardProperties(),
			new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
			10,
			2,
			new AtomicReference<>(),
			new LinkedList<>(),
			subscribedStreamsToLastSeenShardIdsUnderTest,
			FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(streamToShardCount));

	for (Map.Entry<StreamShardHandle, String> restoredState : restoredStateUnderTest.entrySet()) {
		fetcher.advanceLastDiscoveredShardOfStream(restoredState.getKey().getStreamName(), restoredState.getKey().getShard().getShardId());
		fetcher.registerNewSubscribedShardState(
			new KinesisStreamShardState(KinesisDataFetcher.convertToStreamShardMetadata(restoredState.getKey()),
				restoredState.getKey(), new SequenceNumber(restoredState.getValue())));
	}

	CheckedThread runFetcherThread = new CheckedThread() {
		@Override
		public void go() throws Exception {
			fetcher.runFetcher();
		}
	};
	runFetcherThread.start();

	fetcher.waitUntilInitialDiscovery();
	fetcher.shutdownFetcher();
	runFetcherThread.sync();

	// assert that the streams tracked in the state are identical to the subscribed streams
	Set<String> streamsInState = subscribedStreamsToLastSeenShardIdsUnderTest.keySet();
	assertEquals(fakeStreams.size(), streamsInState.size());
	assertTrue(streamsInState.containsAll(fakeStreams));

	// assert that the last seen shards in state is correctly set
	for (Map.Entry<String, String> streamToLastSeenShard : subscribedStreamsToLastSeenShardIdsUnderTest.entrySet()) {
		assertEquals(
			KinesisShardIdGenerator.generateFromShardOrder(streamToShardCount.get(streamToLastSeenShard.getKey()) - 1),
			streamToLastSeenShard.getValue());
	}
}

Example 3

Source File: KinesisDataFetcherTest.java From flink with Apache License 2.0

4 votes

@Test
public void testStreamToLastSeenShardStateIsCorrectlySetWhenNoNewShardsSinceRestoredCheckpoint() throws Exception {
	List<String> fakeStreams = new LinkedList<>();
	fakeStreams.add("fakeStream1");
	fakeStreams.add("fakeStream2");

	Map<StreamShardHandle, String> restoredStateUnderTest = new HashMap<>();

	// fakeStream1 has 3 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(2))),
		UUID.randomUUID().toString());

	// fakeStream2 has 2 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());

	Map<String, Integer> streamToShardCount = new HashMap<>();
	streamToShardCount.put("fakeStream1", 3); // fakeStream1 will still have 3 shards after restore
	streamToShardCount.put("fakeStream2", 2); // fakeStream2 will still have 2 shards after restore

	HashMap<String, String> subscribedStreamsToLastSeenShardIdsUnderTest =
		KinesisDataFetcher.createInitialSubscribedStreamsToLastDiscoveredShardsState(fakeStreams);

	final TestableKinesisDataFetcher<String> fetcher =
		new TestableKinesisDataFetcher<>(
			fakeStreams,
			new TestSourceContext<>(),
			TestUtils.getStandardProperties(),
			new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
			10,
			2,
			new AtomicReference<>(),
			new LinkedList<>(),
			subscribedStreamsToLastSeenShardIdsUnderTest,
			FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(streamToShardCount));

	for (Map.Entry<StreamShardHandle, String> restoredState : restoredStateUnderTest.entrySet()) {
		fetcher.advanceLastDiscoveredShardOfStream(restoredState.getKey().getStreamName(), restoredState.getKey().getShard().getShardId());
		fetcher.registerNewSubscribedShardState(
			new KinesisStreamShardState(KinesisDataFetcher.convertToStreamShardMetadata(restoredState.getKey()),
				restoredState.getKey(), new SequenceNumber(restoredState.getValue())));
	}

	CheckedThread runFetcherThread = new CheckedThread() {
		@Override
		public void go() throws Exception {
			fetcher.runFetcher();
		}
	};
	runFetcherThread.start();

	fetcher.waitUntilInitialDiscovery();
	fetcher.shutdownFetcher();
	runFetcherThread.sync();

	// assert that the streams tracked in the state are identical to the subscribed streams
	Set<String> streamsInState = subscribedStreamsToLastSeenShardIdsUnderTest.keySet();
	assertEquals(fakeStreams.size(), streamsInState.size());
	assertTrue(streamsInState.containsAll(fakeStreams));

	// assert that the last seen shards in state is correctly set
	for (Map.Entry<String, String> streamToLastSeenShard : subscribedStreamsToLastSeenShardIdsUnderTest.entrySet()) {
		assertEquals(
			KinesisShardIdGenerator.generateFromShardOrder(streamToShardCount.get(streamToLastSeenShard.getKey()) - 1),
			streamToLastSeenShard.getValue());
	}
}

Example 4

Source File: KinesisDataFetcherTest.java From flink with Apache License 2.0

4 votes

@Test
public void testStreamToLastSeenShardStateIsCorrectlySetWhenNotRestoringFromFailure() throws Exception {
	List<String> fakeStreams = new LinkedList<>();
	fakeStreams.add("fakeStream1");
	fakeStreams.add("fakeStream2");
	fakeStreams.add("fakeStream3");
	fakeStreams.add("fakeStream4");

	HashMap<String, String> subscribedStreamsToLastSeenShardIdsUnderTest =
		KinesisDataFetcher.createInitialSubscribedStreamsToLastDiscoveredShardsState(fakeStreams);

	Map<String, Integer> streamToShardCount = new HashMap<>();
	Random rand = new Random();
	for (String fakeStream : fakeStreams) {
		streamToShardCount.put(fakeStream, rand.nextInt(5) + 1);
	}

	final TestableKinesisDataFetcher<String> fetcher =
		new TestableKinesisDataFetcher<>(
			fakeStreams,
			new TestSourceContext<>(),
			TestUtils.getStandardProperties(),
			new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
			10,
			2,
			new AtomicReference<>(),
			new LinkedList<>(),
			subscribedStreamsToLastSeenShardIdsUnderTest,
			FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(streamToShardCount));

	final DummyFlinkKinesisConsumer<String> consumer = new DummyFlinkKinesisConsumer<>(
			TestUtils.getStandardProperties(), fetcher, 1, 0);

	CheckedThread consumerThread = new CheckedThread() {
		@Override
		public void go() throws Exception {
			consumer.run(new TestSourceContext<>());
		}
	};
	consumerThread.start();

	fetcher.waitUntilRun();
	consumer.cancel();
	consumerThread.sync();

	// assert that the streams tracked in the state are identical to the subscribed streams
	Set<String> streamsInState = subscribedStreamsToLastSeenShardIdsUnderTest.keySet();
	assertEquals(fakeStreams.size(), streamsInState.size());
	assertTrue(streamsInState.containsAll(fakeStreams));

	// assert that the last seen shards in state is correctly set
	for (Map.Entry<String, String> streamToLastSeenShard : subscribedStreamsToLastSeenShardIdsUnderTest.entrySet()) {
		assertEquals(
			KinesisShardIdGenerator.generateFromShardOrder(streamToShardCount.get(streamToLastSeenShard.getKey()) - 1),
			streamToLastSeenShard.getValue());
	}
}

Example 5

Source File: KinesisDataFetcherTest.java From flink with Apache License 2.0

4 votes

@Test
public void testSkipCorruptedRecord() throws Exception {
	final String stream = "fakeStream";
	final int numShards = 3;

	final LinkedList<KinesisStreamShardState> testShardStates = new LinkedList<>();
	final TestSourceContext<String> sourceContext = new TestSourceContext<>();

	final TestableKinesisDataFetcher<String> fetcher = new TestableKinesisDataFetcher<>(
		Collections.singletonList(stream),
		sourceContext,
		TestUtils.getStandardProperties(),
		new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
		1,
		0,
		new AtomicReference<>(),
		testShardStates,
		new HashMap<>(),
		FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(Collections.singletonMap(stream, numShards)));

	// FlinkKinesisConsumer is responsible for setting up the fetcher before it can be run;
	// run the consumer until it reaches the point where the fetcher starts to run
	final DummyFlinkKinesisConsumer<String> consumer = new DummyFlinkKinesisConsumer<>(TestUtils.getStandardProperties(), fetcher, 1, 0);

	CheckedThread consumerThread = new CheckedThread() {
		@Override
		public void go() throws Exception {
			consumer.run(new TestSourceContext<>());
		}
	};
	consumerThread.start();

	fetcher.waitUntilRun();
	consumer.cancel();
	consumerThread.sync();

	assertEquals(numShards, testShardStates.size());

	for (int i = 0; i < numShards; i++) {
		fetcher.emitRecordAndUpdateState("record-" + i, 10L, i, new SequenceNumber("seq-num-1"));
		assertEquals(new SequenceNumber("seq-num-1"), testShardStates.get(i).getLastProcessedSequenceNum());
		assertEquals(new StreamRecord<>("record-" + i, 10L), sourceContext.removeLatestOutput());
	}

	// emitting a null (i.e., a corrupt record) should not produce any output, but still have the shard state updated
	fetcher.emitRecordAndUpdateState(null, 10L, 1, new SequenceNumber("seq-num-2"));
		assertEquals(new SequenceNumber("seq-num-2"), testShardStates.get(1).getLastProcessedSequenceNum());
	assertEquals(null, sourceContext.removeLatestOutput()); // no output should have been collected
}

Example 6

Source File: KinesisDataFetcherTest.java From flink with Apache License 2.0

4 votes

@Test
public void testPeriodicWatermark() {
	final MutableLong clock = new MutableLong();
	final MutableBoolean isTemporaryIdle = new MutableBoolean();
	final List<Watermark> watermarks = new ArrayList<>();

	String fakeStream1 = "fakeStream1";
	StreamShardHandle shardHandle =
		new StreamShardHandle(
			fakeStream1,
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0)));

	TestSourceContext<String> sourceContext =
		new TestSourceContext<String>() {
			@Override
			public void emitWatermark(Watermark mark) {
				watermarks.add(mark);
			}

			@Override
			public void markAsTemporarilyIdle() {
				isTemporaryIdle.setTrue();
			}
		};

	HashMap<String, String> subscribedStreamsToLastSeenShardIdsUnderTest = new HashMap<>();

	final KinesisDataFetcher<String> fetcher =
		new TestableKinesisDataFetcher<String>(
			Collections.singletonList(fakeStream1),
			sourceContext,
			new java.util.Properties(),
			new KinesisDeserializationSchemaWrapper<>(new org.apache.flink.streaming.util.serialization.SimpleStringSchema()),
			1,
			1,
			new AtomicReference<>(),
			new LinkedList<>(),
			subscribedStreamsToLastSeenShardIdsUnderTest,
			FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(new HashMap<>())) {

			@Override
			protected long getCurrentTimeMillis() {
				return clock.getValue();
			}
		};
	Whitebox.setInternalState(fetcher, "periodicWatermarkAssigner", watermarkAssigner);

	SequenceNumber seq = new SequenceNumber("fakeSequenceNumber");
	// register shards to subsequently emit records
	int shardIndex =
		fetcher.registerNewSubscribedShardState(
			new KinesisStreamShardState(
				KinesisDataFetcher.convertToStreamShardMetadata(shardHandle), shardHandle, seq));

	StreamRecord<String> record1 =
		new StreamRecord<>(String.valueOf(Long.MIN_VALUE), Long.MIN_VALUE);
	fetcher.emitRecordAndUpdateState(record1.getValue(), record1.getTimestamp(), shardIndex, seq);
	Assert.assertEquals(record1, sourceContext.getCollectedOutputs().poll());

	fetcher.emitWatermark();
	Assert.assertTrue("potential watermark equals previous watermark", watermarks.isEmpty());

	StreamRecord<String> record2 = new StreamRecord<>(String.valueOf(1), 1);
	fetcher.emitRecordAndUpdateState(record2.getValue(), record2.getTimestamp(), shardIndex, seq);
	Assert.assertEquals(record2, sourceContext.getCollectedOutputs().poll());

	fetcher.emitWatermark();
	Assert.assertFalse("watermark advanced", watermarks.isEmpty());
	Assert.assertEquals(new Watermark(record2.getTimestamp()), watermarks.remove(0));
	Assert.assertFalse("not idle", isTemporaryIdle.booleanValue());

	// test idle timeout
	long idleTimeout = 10;
	// advance clock idleTimeout
	clock.add(idleTimeout + 1);
	fetcher.emitWatermark();
	Assert.assertFalse("not idle", isTemporaryIdle.booleanValue());
	Assert.assertTrue("not idle, no new watermark", watermarks.isEmpty());

	// activate idle timeout
	Whitebox.setInternalState(fetcher, "shardIdleIntervalMillis", idleTimeout);
	fetcher.emitWatermark();
	Assert.assertTrue("idle", isTemporaryIdle.booleanValue());
	Assert.assertTrue("idle, no watermark", watermarks.isEmpty());
}

Example 7

Source File: KinesisDataFetcherTest.java From flink with Apache License 2.0

4 votes

@Test
public void testShardToSubtaskMappingWithCustomHashFunction() throws Exception {

	int totalCountOfSubtasks = 10;
	int shardCount = 3;

	for (int i = 0; i < 2; i++) {

		final int hash = i;
		final KinesisShardAssigner allShardsSingleSubtaskFn = (shard, subtasks) -> hash;
		Map<String, Integer> streamToShardCount = new HashMap<>();
		List<String> fakeStreams = new LinkedList<>();
		fakeStreams.add("fakeStream");
		streamToShardCount.put("fakeStream", shardCount);

		for (int j = 0; j < totalCountOfSubtasks; j++) {

			int subtaskIndex = j;
			// subscribe with default hashing
			final TestableKinesisDataFetcher fetcher =
				new TestableKinesisDataFetcher(
					fakeStreams,
					new TestSourceContext<>(),
					new Properties(),
					new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
					totalCountOfSubtasks,
					subtaskIndex,
					new AtomicReference<>(),
					new LinkedList<>(),
					KinesisDataFetcher.createInitialSubscribedStreamsToLastDiscoveredShardsState(fakeStreams),
					FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(streamToShardCount));
			Whitebox.setInternalState(fetcher, "shardAssigner", allShardsSingleSubtaskFn); // override hashing
			List<StreamShardHandle> shards = fetcher.discoverNewShardsToSubscribe();
			fetcher.shutdownFetcher();

			String msg = String.format("for hash=%d, subtask=%d", hash, subtaskIndex);
			if (j == i) {
				assertEquals(msg, shardCount, shards.size());
			} else {
				assertEquals(msg, 0, shards.size());
			}
		}

	}

}

Example 8

Source File: KinesisDataFetcherTest.java From flink with Apache License 2.0

4 votes

@Test
public void testStreamToLastSeenShardStateIsCorrectlySetWhenNewShardsFoundSinceRestoredCheckpointAndSomeStreamsDoNotExist() throws Exception {
	List<String> fakeStreams = new LinkedList<>();
	fakeStreams.add("fakeStream1");
	fakeStreams.add("fakeStream2");
	fakeStreams.add("fakeStream3"); // fakeStream3 will not have any shards
	fakeStreams.add("fakeStream4"); // fakeStream4 will not have any shards

	Map<StreamShardHandle, String> restoredStateUnderTest = new HashMap<>();

	// fakeStream1 has 3 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(2))),
		UUID.randomUUID().toString());

	// fakeStream2 has 2 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());

	Map<String, Integer> streamToShardCount = new HashMap<>();
	streamToShardCount.put("fakeStream1", 3 + 1); // fakeStream1 had 3 shards before & 1 new shard after restore
	streamToShardCount.put("fakeStream2", 2 + 3); // fakeStream2 had 2 shards before & 2 new shard after restore
	streamToShardCount.put("fakeStream3", 0); // no shards can be found for fakeStream3
	streamToShardCount.put("fakeStream4", 0); // no shards can be found for fakeStream4

	HashMap<String, String> subscribedStreamsToLastSeenShardIdsUnderTest =
		KinesisDataFetcher.createInitialSubscribedStreamsToLastDiscoveredShardsState(fakeStreams);

	// using a non-resharded streams kinesis behaviour to represent that Kinesis is not resharded AFTER the restore
	final TestableKinesisDataFetcher<String> fetcher =
		new TestableKinesisDataFetcher<>(
			fakeStreams,
			new TestSourceContext<>(),
			TestUtils.getStandardProperties(),
			new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
			10,
			2,
			new AtomicReference<>(),
			new LinkedList<>(),
			subscribedStreamsToLastSeenShardIdsUnderTest,
			FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(streamToShardCount));

	for (Map.Entry<StreamShardHandle, String> restoredState : restoredStateUnderTest.entrySet()) {
		fetcher.advanceLastDiscoveredShardOfStream(restoredState.getKey().getStreamName(), restoredState.getKey().getShard().getShardId());
		fetcher.registerNewSubscribedShardState(
			new KinesisStreamShardState(KinesisDataFetcher.convertToStreamShardMetadata(restoredState.getKey()),
				restoredState.getKey(), new SequenceNumber(restoredState.getValue())));
	}

	CheckedThread runFetcherThread = new CheckedThread() {
		@Override
		public void go() throws Exception {
			fetcher.runFetcher();
		}
	};
	runFetcherThread.start();

	fetcher.waitUntilInitialDiscovery();
	fetcher.shutdownFetcher();
	runFetcherThread.sync();

	// assert that the streams tracked in the state are identical to the subscribed streams
	Set<String> streamsInState = subscribedStreamsToLastSeenShardIdsUnderTest.keySet();
	assertEquals(fakeStreams.size(), streamsInState.size());
	assertTrue(streamsInState.containsAll(fakeStreams));

	// assert that the last seen shards in state is correctly set
	assertEquals(
		KinesisShardIdGenerator.generateFromShardOrder(3),
		subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream1"));
	assertEquals(
		KinesisShardIdGenerator.generateFromShardOrder(4),
		subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream2"));
	assertNull(subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream3"));
	assertNull(subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream4"));
}

Example 9

Source File: KinesisDataFetcherTest.java From flink with Apache License 2.0

4 votes

@Test
public void testStreamToLastSeenShardStateIsCorrectlySetWhenNoNewShardsSinceRestoredCheckpointAndSomeStreamsDoNotExist() throws Exception {
	List<String> fakeStreams = new LinkedList<>();
	fakeStreams.add("fakeStream1");
	fakeStreams.add("fakeStream2");
	fakeStreams.add("fakeStream3"); // fakeStream3 will not have any shards
	fakeStreams.add("fakeStream4"); // fakeStream4 will not have any shards

	Map<StreamShardHandle, String> restoredStateUnderTest = new HashMap<>();

	// fakeStream1 has 3 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(2))),
		UUID.randomUUID().toString());

	// fakeStream2 has 2 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());

	Map<String, Integer> streamToShardCount = new HashMap<>();
	streamToShardCount.put("fakeStream1", 3); // fakeStream1 has fixed 3 shards
	streamToShardCount.put("fakeStream2", 2); // fakeStream2 has fixed 2 shards
	streamToShardCount.put("fakeStream3", 0); // no shards can be found for fakeStream3
	streamToShardCount.put("fakeStream4", 0); // no shards can be found for fakeStream4

	HashMap<String, String> subscribedStreamsToLastSeenShardIdsUnderTest =
		KinesisDataFetcher.createInitialSubscribedStreamsToLastDiscoveredShardsState(fakeStreams);

	// using a non-resharded streams kinesis behaviour to represent that Kinesis is not resharded AFTER the restore
	final TestableKinesisDataFetcher<String> fetcher =
		new TestableKinesisDataFetcher<>(
			fakeStreams,
			new TestSourceContext<>(),
			TestUtils.getStandardProperties(),
			new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
			10,
			2,
			new AtomicReference<>(),
			new LinkedList<>(),
			subscribedStreamsToLastSeenShardIdsUnderTest,
			FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(streamToShardCount));

	for (Map.Entry<StreamShardHandle, String> restoredState : restoredStateUnderTest.entrySet()) {
		fetcher.advanceLastDiscoveredShardOfStream(restoredState.getKey().getStreamName(), restoredState.getKey().getShard().getShardId());
		fetcher.registerNewSubscribedShardState(
			new KinesisStreamShardState(KinesisDataFetcher.convertToStreamShardMetadata(restoredState.getKey()),
				restoredState.getKey(), new SequenceNumber(restoredState.getValue())));
	}

	CheckedThread runFetcherThread = new CheckedThread() {
		@Override
		public void go() throws Exception {
			fetcher.runFetcher();
		}
	};
	runFetcherThread.start();

	fetcher.waitUntilInitialDiscovery();
	fetcher.shutdownFetcher();
	runFetcherThread.sync();

	// assert that the streams tracked in the state are identical to the subscribed streams
	Set<String> streamsInState = subscribedStreamsToLastSeenShardIdsUnderTest.keySet();
	assertEquals(fakeStreams.size(), streamsInState.size());
	assertTrue(streamsInState.containsAll(fakeStreams));

	// assert that the last seen shards in state is correctly set
	assertEquals(
		KinesisShardIdGenerator.generateFromShardOrder(2),
		subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream1"));
	assertEquals(
		KinesisShardIdGenerator.generateFromShardOrder(1),
		subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream2"));
	assertNull(subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream3"));
	assertNull(subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream4"));
}

Example 10

Source File: KinesisDataFetcherTest.java From flink with Apache License 2.0

4 votes

@Test
public void testStreamToLastSeenShardStateIsCorrectlySetWhenNoNewShardsSinceRestoredCheckpointAndSomeStreamsDoNotExist() throws Exception {
	List<String> fakeStreams = new LinkedList<>();
	fakeStreams.add("fakeStream1");
	fakeStreams.add("fakeStream2");
	fakeStreams.add("fakeStream3"); // fakeStream3 will not have any shards
	fakeStreams.add("fakeStream4"); // fakeStream4 will not have any shards

	Map<StreamShardHandle, String> restoredStateUnderTest = new HashMap<>();

	// fakeStream1 has 3 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(2))),
		UUID.randomUUID().toString());

	// fakeStream2 has 2 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());

	Map<String, Integer> streamToShardCount = new HashMap<>();
	streamToShardCount.put("fakeStream1", 3); // fakeStream1 has fixed 3 shards
	streamToShardCount.put("fakeStream2", 2); // fakeStream2 has fixed 2 shards
	streamToShardCount.put("fakeStream3", 0); // no shards can be found for fakeStream3
	streamToShardCount.put("fakeStream4", 0); // no shards can be found for fakeStream4

	HashMap<String, String> subscribedStreamsToLastSeenShardIdsUnderTest =
		KinesisDataFetcher.createInitialSubscribedStreamsToLastDiscoveredShardsState(fakeStreams);

	// using a non-resharded streams kinesis behaviour to represent that Kinesis is not resharded AFTER the restore
	final TestableKinesisDataFetcher<String> fetcher =
		new TestableKinesisDataFetcher<>(
			fakeStreams,
			new TestSourceContext<>(),
			TestUtils.getStandardProperties(),
			new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
			10,
			2,
			new AtomicReference<>(),
			new LinkedList<>(),
			subscribedStreamsToLastSeenShardIdsUnderTest,
			FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(streamToShardCount));

	for (Map.Entry<StreamShardHandle, String> restoredState : restoredStateUnderTest.entrySet()) {
		fetcher.advanceLastDiscoveredShardOfStream(restoredState.getKey().getStreamName(), restoredState.getKey().getShard().getShardId());
		fetcher.registerNewSubscribedShardState(
			new KinesisStreamShardState(KinesisDataFetcher.convertToStreamShardMetadata(restoredState.getKey()),
				restoredState.getKey(), new SequenceNumber(restoredState.getValue())));
	}

	CheckedThread runFetcherThread = new CheckedThread() {
		@Override
		public void go() throws Exception {
			fetcher.runFetcher();
		}
	};
	runFetcherThread.start();

	fetcher.waitUntilInitialDiscovery();
	fetcher.shutdownFetcher();
	runFetcherThread.sync();

	// assert that the streams tracked in the state are identical to the subscribed streams
	Set<String> streamsInState = subscribedStreamsToLastSeenShardIdsUnderTest.keySet();
	assertEquals(fakeStreams.size(), streamsInState.size());
	assertTrue(streamsInState.containsAll(fakeStreams));

	// assert that the last seen shards in state is correctly set
	assertEquals(
		KinesisShardIdGenerator.generateFromShardOrder(2),
		subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream1"));
	assertEquals(
		KinesisShardIdGenerator.generateFromShardOrder(1),
		subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream2"));
	assertNull(subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream3"));
	assertNull(subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream4"));
}

Example 11

Source File: KinesisDataFetcherTest.java From flink with Apache License 2.0

4 votes

@Test
public void testPeriodicWatermark() {
	final MutableLong clock = new MutableLong();
	final MutableBoolean isTemporaryIdle = new MutableBoolean();
	final List<Watermark> watermarks = new ArrayList<>();

	String fakeStream1 = "fakeStream1";
	StreamShardHandle shardHandle =
		new StreamShardHandle(
			fakeStream1,
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0)));

	TestSourceContext<String> sourceContext =
		new TestSourceContext<String>() {
			@Override
			public void emitWatermark(Watermark mark) {
				watermarks.add(mark);
			}

			@Override
			public void markAsTemporarilyIdle() {
				isTemporaryIdle.setTrue();
			}
		};

	HashMap<String, String> subscribedStreamsToLastSeenShardIdsUnderTest = new HashMap<>();

	final KinesisDataFetcher<String> fetcher =
		new TestableKinesisDataFetcher<String>(
			Collections.singletonList(fakeStream1),
			sourceContext,
			new java.util.Properties(),
			new KinesisDeserializationSchemaWrapper<>(new org.apache.flink.streaming.util.serialization.SimpleStringSchema()),
			1,
			1,
			new AtomicReference<>(),
			new LinkedList<>(),
			subscribedStreamsToLastSeenShardIdsUnderTest,
			FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(new HashMap<>())) {

			@Override
			protected long getCurrentTimeMillis() {
				return clock.getValue();
			}
		};
	Whitebox.setInternalState(fetcher, "periodicWatermarkAssigner", watermarkAssigner);

	SequenceNumber seq = new SequenceNumber("fakeSequenceNumber");
	// register shards to subsequently emit records
	int shardIndex =
		fetcher.registerNewSubscribedShardState(
			new KinesisStreamShardState(
				KinesisDataFetcher.convertToStreamShardMetadata(shardHandle), shardHandle, seq));

	StreamRecord<String> record1 =
		new StreamRecord<>(String.valueOf(Long.MIN_VALUE), Long.MIN_VALUE);
	fetcher.emitRecordAndUpdateState(record1.getValue(), record1.getTimestamp(), shardIndex, seq);
	Assert.assertEquals(record1, sourceContext.getCollectedOutputs().poll());

	fetcher.emitWatermark();
	Assert.assertTrue("potential watermark equals previous watermark", watermarks.isEmpty());

	StreamRecord<String> record2 = new StreamRecord<>(String.valueOf(1), 1);
	fetcher.emitRecordAndUpdateState(record2.getValue(), record2.getTimestamp(), shardIndex, seq);
	Assert.assertEquals(record2, sourceContext.getCollectedOutputs().poll());

	fetcher.emitWatermark();
	Assert.assertFalse("watermark advanced", watermarks.isEmpty());
	Assert.assertEquals(new Watermark(record2.getTimestamp()), watermarks.remove(0));
	Assert.assertFalse("not idle", isTemporaryIdle.booleanValue());

	// test idle timeout
	long idleTimeout = 10;
	// advance clock idleTimeout
	clock.add(idleTimeout + 1);
	fetcher.emitWatermark();
	Assert.assertFalse("not idle", isTemporaryIdle.booleanValue());
	Assert.assertTrue("not idle, no new watermark", watermarks.isEmpty());

	// activate idle timeout
	Whitebox.setInternalState(fetcher, "shardIdleIntervalMillis", idleTimeout);
	fetcher.emitWatermark();
	Assert.assertTrue("idle", isTemporaryIdle.booleanValue());
	Assert.assertTrue("idle, no watermark", watermarks.isEmpty());
}

Example 12

Source File: KinesisDataFetcherTest.java From flink with Apache License 2.0

4 votes

@Test
public void testStreamToLastSeenShardStateIsCorrectlySetWhenNotRestoringFromFailure() throws Exception {
	List<String> fakeStreams = new LinkedList<>();
	fakeStreams.add("fakeStream1");
	fakeStreams.add("fakeStream2");
	fakeStreams.add("fakeStream3");
	fakeStreams.add("fakeStream4");

	HashMap<String, String> subscribedStreamsToLastSeenShardIdsUnderTest =
		KinesisDataFetcher.createInitialSubscribedStreamsToLastDiscoveredShardsState(fakeStreams);

	Map<String, Integer> streamToShardCount = new HashMap<>();
	Random rand = new Random();
	for (String fakeStream : fakeStreams) {
		streamToShardCount.put(fakeStream, rand.nextInt(5) + 1);
	}

	final TestableKinesisDataFetcher<String> fetcher =
		new TestableKinesisDataFetcher<>(
			fakeStreams,
			new TestSourceContext<>(),
			TestUtils.getStandardProperties(),
			new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
			10,
			2,
			new AtomicReference<>(),
			new LinkedList<>(),
			subscribedStreamsToLastSeenShardIdsUnderTest,
			FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(streamToShardCount));

	final DummyFlinkKinesisConsumer<String> consumer = new DummyFlinkKinesisConsumer<>(
			TestUtils.getStandardProperties(), fetcher, 1, 0);

	CheckedThread consumerThread = new CheckedThread() {
		@Override
		public void go() throws Exception {
			consumer.run(new TestSourceContext<>());
		}
	};
	consumerThread.start();

	fetcher.waitUntilRun();
	consumer.cancel();
	consumerThread.sync();

	// assert that the streams tracked in the state are identical to the subscribed streams
	Set<String> streamsInState = subscribedStreamsToLastSeenShardIdsUnderTest.keySet();
	assertEquals(fakeStreams.size(), streamsInState.size());
	assertTrue(streamsInState.containsAll(fakeStreams));

	// assert that the last seen shards in state is correctly set
	for (Map.Entry<String, String> streamToLastSeenShard : subscribedStreamsToLastSeenShardIdsUnderTest.entrySet()) {
		assertEquals(
			KinesisShardIdGenerator.generateFromShardOrder(streamToShardCount.get(streamToLastSeenShard.getKey()) - 1),
			streamToLastSeenShard.getValue());
	}
}

Example 13

Source File: KinesisDataFetcherTest.java From flink with Apache License 2.0

4 votes

@Test
public void testSkipCorruptedRecord() throws Exception {
	final String stream = "fakeStream";
	final int numShards = 3;

	final LinkedList<KinesisStreamShardState> testShardStates = new LinkedList<>();
	final TestSourceContext<String> sourceContext = new TestSourceContext<>();

	final TestableKinesisDataFetcher<String> fetcher = new TestableKinesisDataFetcher<>(
		Collections.singletonList(stream),
		sourceContext,
		TestUtils.getStandardProperties(),
		new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
		1,
		0,
		new AtomicReference<>(),
		testShardStates,
		new HashMap<>(),
		FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(Collections.singletonMap(stream, numShards)));

	// FlinkKinesisConsumer is responsible for setting up the fetcher before it can be run;
	// run the consumer until it reaches the point where the fetcher starts to run
	final DummyFlinkKinesisConsumer<String> consumer = new DummyFlinkKinesisConsumer<>(TestUtils.getStandardProperties(), fetcher, 1, 0);

	CheckedThread consumerThread = new CheckedThread() {
		@Override
		public void go() throws Exception {
			consumer.run(new TestSourceContext<>());
		}
	};
	consumerThread.start();

	fetcher.waitUntilRun();
	consumer.cancel();
	consumerThread.sync();

	assertEquals(numShards, testShardStates.size());

	for (int i = 0; i < numShards; i++) {
		fetcher.emitRecordAndUpdateState("record-" + i, 10L, i, new SequenceNumber("seq-num-1"));
		assertEquals(new SequenceNumber("seq-num-1"), testShardStates.get(i).getLastProcessedSequenceNum());
		assertEquals(new StreamRecord<>("record-" + i, 10L), sourceContext.removeLatestOutput());
	}

	// emitting a null (i.e., a corrupt record) should not produce any output, but still have the shard state updated
	fetcher.emitRecordAndUpdateState(null, 10L, 1, new SequenceNumber("seq-num-2"));
		assertEquals(new SequenceNumber("seq-num-2"), testShardStates.get(1).getLastProcessedSequenceNum());
	assertEquals(null, sourceContext.removeLatestOutput()); // no output should have been collected
}

Example 14

Source File: KinesisDataFetcherTest.java From Flink-CEPplus with Apache License 2.0

4 votes

@Test
public void testPeriodicWatermark() {
	final MutableLong clock = new MutableLong();
	final MutableBoolean isTemporaryIdle = new MutableBoolean();
	final List<Watermark> watermarks = new ArrayList<>();

	String fakeStream1 = "fakeStream1";
	StreamShardHandle shardHandle =
		new StreamShardHandle(
			fakeStream1,
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0)));

	TestSourceContext<String> sourceContext =
		new TestSourceContext<String>() {
			@Override
			public void emitWatermark(Watermark mark) {
				watermarks.add(mark);
			}

			@Override
			public void markAsTemporarilyIdle() {
				isTemporaryIdle.setTrue();
			}
		};

	HashMap<String, String> subscribedStreamsToLastSeenShardIdsUnderTest = new HashMap<>();

	final KinesisDataFetcher<String> fetcher =
		new TestableKinesisDataFetcher<String>(
			Collections.singletonList(fakeStream1),
			sourceContext,
			new java.util.Properties(),
			new KinesisDeserializationSchemaWrapper<>(new org.apache.flink.streaming.util.serialization.SimpleStringSchema()),
			1,
			1,
			new AtomicReference<>(),
			new LinkedList<>(),
			subscribedStreamsToLastSeenShardIdsUnderTest,
			FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(new HashMap<>())) {

			@Override
			protected long getCurrentTimeMillis() {
				return clock.getValue();
			}
		};
	Whitebox.setInternalState(fetcher, "periodicWatermarkAssigner", watermarkAssigner);

	SequenceNumber seq = new SequenceNumber("fakeSequenceNumber");
	// register shards to subsequently emit records
	int shardIndex =
		fetcher.registerNewSubscribedShardState(
			new KinesisStreamShardState(
				KinesisDataFetcher.convertToStreamShardMetadata(shardHandle), shardHandle, seq));

	StreamRecord<String> record1 =
		new StreamRecord<>(String.valueOf(Long.MIN_VALUE), Long.MIN_VALUE);
	fetcher.emitRecordAndUpdateState(record1.getValue(), record1.getTimestamp(), shardIndex, seq);
	Assert.assertEquals(record1, sourceContext.getCollectedOutputs().poll());

	fetcher.emitWatermark();
	Assert.assertTrue("potential watermark equals previous watermark", watermarks.isEmpty());

	StreamRecord<String> record2 = new StreamRecord<>(String.valueOf(1), 1);
	fetcher.emitRecordAndUpdateState(record2.getValue(), record2.getTimestamp(), shardIndex, seq);
	Assert.assertEquals(record2, sourceContext.getCollectedOutputs().poll());

	fetcher.emitWatermark();
	Assert.assertFalse("watermark advanced", watermarks.isEmpty());
	Assert.assertEquals(new Watermark(record2.getTimestamp()), watermarks.remove(0));
	Assert.assertFalse("not idle", isTemporaryIdle.booleanValue());

	// test idle timeout
	long idleTimeout = 10;
	// advance clock idleTimeout
	clock.add(idleTimeout + 1);
	fetcher.emitWatermark();
	Assert.assertFalse("not idle", isTemporaryIdle.booleanValue());
	Assert.assertTrue("not idle, no new watermark", watermarks.isEmpty());

	// activate idle timeout
	Whitebox.setInternalState(fetcher, "shardIdleIntervalMillis", idleTimeout);
	fetcher.emitWatermark();
	Assert.assertTrue("idle", isTemporaryIdle.booleanValue());
	Assert.assertTrue("idle, no watermark", watermarks.isEmpty());
}

Example 15

Source File: KinesisDataFetcherTest.java From Flink-CEPplus with Apache License 2.0

4 votes

@Test
public void testShardToSubtaskMappingWithCustomHashFunction() throws Exception {

	int totalCountOfSubtasks = 10;
	int shardCount = 3;

	for (int i = 0; i < 2; i++) {

		final int hash = i;
		final KinesisShardAssigner allShardsSingleSubtaskFn = (shard, subtasks) -> hash;
		Map<String, Integer> streamToShardCount = new HashMap<>();
		List<String> fakeStreams = new LinkedList<>();
		fakeStreams.add("fakeStream");
		streamToShardCount.put("fakeStream", shardCount);

		for (int j = 0; j < totalCountOfSubtasks; j++) {

			int subtaskIndex = j;
			// subscribe with default hashing
			final TestableKinesisDataFetcher fetcher =
				new TestableKinesisDataFetcher(
					fakeStreams,
					new TestSourceContext<>(),
					new Properties(),
					new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
					totalCountOfSubtasks,
					subtaskIndex,
					new AtomicReference<>(),
					new LinkedList<>(),
					KinesisDataFetcher.createInitialSubscribedStreamsToLastDiscoveredShardsState(fakeStreams),
					FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(streamToShardCount));
			Whitebox.setInternalState(fetcher, "shardAssigner", allShardsSingleSubtaskFn); // override hashing
			List<StreamShardHandle> shards = fetcher.discoverNewShardsToSubscribe();
			fetcher.shutdownFetcher();

			String msg = String.format("for hash=%d, subtask=%d", hash, subtaskIndex);
			if (j == i) {
				assertEquals(msg, shardCount, shards.size());
			} else {
				assertEquals(msg, 0, shards.size());
			}
		}

	}

}

Example 16

Source File: KinesisDataFetcherTest.java From flink with Apache License 2.0

4 votes

@Test
public void testShardToSubtaskMappingWithCustomHashFunction() throws Exception {

	int totalCountOfSubtasks = 10;
	int shardCount = 3;

	for (int i = 0; i < 2; i++) {

		final int hash = i;
		final KinesisShardAssigner allShardsSingleSubtaskFn = (shard, subtasks) -> hash;
		Map<String, Integer> streamToShardCount = new HashMap<>();
		List<String> fakeStreams = new LinkedList<>();
		fakeStreams.add("fakeStream");
		streamToShardCount.put("fakeStream", shardCount);

		for (int j = 0; j < totalCountOfSubtasks; j++) {

			int subtaskIndex = j;
			// subscribe with default hashing
			final TestableKinesisDataFetcher fetcher =
				new TestableKinesisDataFetcher(
					fakeStreams,
					new TestSourceContext<>(),
					new Properties(),
					new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
					totalCountOfSubtasks,
					subtaskIndex,
					new AtomicReference<>(),
					new LinkedList<>(),
					KinesisDataFetcher.createInitialSubscribedStreamsToLastDiscoveredShardsState(fakeStreams),
					FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(streamToShardCount));
			Whitebox.setInternalState(fetcher, "shardAssigner", allShardsSingleSubtaskFn); // override hashing
			List<StreamShardHandle> shards = fetcher.discoverNewShardsToSubscribe();
			fetcher.shutdownFetcher();

			String msg = String.format("for hash=%d, subtask=%d", hash, subtaskIndex);
			if (j == i) {
				assertEquals(msg, shardCount, shards.size());
			} else {
				assertEquals(msg, 0, shards.size());
			}
		}

	}

}

Example 17

Source File: KinesisDataFetcherTest.java From Flink-CEPplus with Apache License 2.0

4 votes

@Test
public void testStreamToLastSeenShardStateIsCorrectlySetWhenNoNewShardsSinceRestoredCheckpointAndSomeStreamsDoNotExist() throws Exception {
	List<String> fakeStreams = new LinkedList<>();
	fakeStreams.add("fakeStream1");
	fakeStreams.add("fakeStream2");
	fakeStreams.add("fakeStream3"); // fakeStream3 will not have any shards
	fakeStreams.add("fakeStream4"); // fakeStream4 will not have any shards

	Map<StreamShardHandle, String> restoredStateUnderTest = new HashMap<>();

	// fakeStream1 has 3 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(2))),
		UUID.randomUUID().toString());

	// fakeStream2 has 2 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());

	Map<String, Integer> streamToShardCount = new HashMap<>();
	streamToShardCount.put("fakeStream1", 3); // fakeStream1 has fixed 3 shards
	streamToShardCount.put("fakeStream2", 2); // fakeStream2 has fixed 2 shards
	streamToShardCount.put("fakeStream3", 0); // no shards can be found for fakeStream3
	streamToShardCount.put("fakeStream4", 0); // no shards can be found for fakeStream4

	HashMap<String, String> subscribedStreamsToLastSeenShardIdsUnderTest =
		KinesisDataFetcher.createInitialSubscribedStreamsToLastDiscoveredShardsState(fakeStreams);

	// using a non-resharded streams kinesis behaviour to represent that Kinesis is not resharded AFTER the restore
	final TestableKinesisDataFetcher<String> fetcher =
		new TestableKinesisDataFetcher<>(
			fakeStreams,
			new TestSourceContext<>(),
			TestUtils.getStandardProperties(),
			new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
			10,
			2,
			new AtomicReference<>(),
			new LinkedList<>(),
			subscribedStreamsToLastSeenShardIdsUnderTest,
			FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(streamToShardCount));

	for (Map.Entry<StreamShardHandle, String> restoredState : restoredStateUnderTest.entrySet()) {
		fetcher.advanceLastDiscoveredShardOfStream(restoredState.getKey().getStreamName(), restoredState.getKey().getShard().getShardId());
		fetcher.registerNewSubscribedShardState(
			new KinesisStreamShardState(KinesisDataFetcher.convertToStreamShardMetadata(restoredState.getKey()),
				restoredState.getKey(), new SequenceNumber(restoredState.getValue())));
	}

	CheckedThread runFetcherThread = new CheckedThread() {
		@Override
		public void go() throws Exception {
			fetcher.runFetcher();
		}
	};
	runFetcherThread.start();

	fetcher.waitUntilInitialDiscovery();
	fetcher.shutdownFetcher();
	runFetcherThread.sync();

	// assert that the streams tracked in the state are identical to the subscribed streams
	Set<String> streamsInState = subscribedStreamsToLastSeenShardIdsUnderTest.keySet();
	assertEquals(fakeStreams.size(), streamsInState.size());
	assertTrue(streamsInState.containsAll(fakeStreams));

	// assert that the last seen shards in state is correctly set
	assertEquals(
		KinesisShardIdGenerator.generateFromShardOrder(2),
		subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream1"));
	assertEquals(
		KinesisShardIdGenerator.generateFromShardOrder(1),
		subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream2"));
	assertNull(subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream3"));
	assertNull(subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream4"));
}

Example 18

Source File: KinesisDataFetcherTest.java From Flink-CEPplus with Apache License 2.0

4 votes

@Test
public void testStreamToLastSeenShardStateIsCorrectlySetWhenNewShardsFoundSinceRestoredCheckpoint() throws Exception {
	List<String> fakeStreams = new LinkedList<>();
	fakeStreams.add("fakeStream1");
	fakeStreams.add("fakeStream2");

	Map<StreamShardHandle, String> restoredStateUnderTest = new HashMap<>();

	// fakeStream1 has 3 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(2))),
		UUID.randomUUID().toString());

	// fakeStream2 has 2 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());

	Map<String, Integer> streamToShardCount = new HashMap<>();
	streamToShardCount.put("fakeStream1", 3 + 1); // fakeStream1 had 3 shards before & 1 new shard after restore
	streamToShardCount.put("fakeStream2", 2 + 3); // fakeStream2 had 2 shards before & 3 new shard after restore

	HashMap<String, String> subscribedStreamsToLastSeenShardIdsUnderTest =
		KinesisDataFetcher.createInitialSubscribedStreamsToLastDiscoveredShardsState(fakeStreams);

	// using a non-resharded streams kinesis behaviour to represent that Kinesis is not resharded AFTER the restore
	final TestableKinesisDataFetcher<String> fetcher =
		new TestableKinesisDataFetcher<>(
			fakeStreams,
			new TestSourceContext<>(),
			TestUtils.getStandardProperties(),
			new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
			10,
			2,
			new AtomicReference<>(),
			new LinkedList<>(),
			subscribedStreamsToLastSeenShardIdsUnderTest,
			FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(streamToShardCount));

	for (Map.Entry<StreamShardHandle, String> restoredState : restoredStateUnderTest.entrySet()) {
		fetcher.advanceLastDiscoveredShardOfStream(restoredState.getKey().getStreamName(), restoredState.getKey().getShard().getShardId());
		fetcher.registerNewSubscribedShardState(
			new KinesisStreamShardState(KinesisDataFetcher.convertToStreamShardMetadata(restoredState.getKey()),
				restoredState.getKey(), new SequenceNumber(restoredState.getValue())));
	}

	CheckedThread runFetcherThread = new CheckedThread() {
		@Override
		public void go() throws Exception {
			fetcher.runFetcher();
		}
	};
	runFetcherThread.start();

	fetcher.waitUntilInitialDiscovery();
	fetcher.shutdownFetcher();
	runFetcherThread.sync();

	// assert that the streams tracked in the state are identical to the subscribed streams
	Set<String> streamsInState = subscribedStreamsToLastSeenShardIdsUnderTest.keySet();
	assertEquals(fakeStreams.size(), streamsInState.size());
	assertTrue(streamsInState.containsAll(fakeStreams));

	// assert that the last seen shards in state is correctly set
	for (Map.Entry<String, String> streamToLastSeenShard : subscribedStreamsToLastSeenShardIdsUnderTest.entrySet()) {
		assertEquals(
			KinesisShardIdGenerator.generateFromShardOrder(streamToShardCount.get(streamToLastSeenShard.getKey()) - 1),
			streamToLastSeenShard.getValue());
	}
}

Example 19

Source File: KinesisDataFetcherTest.java From Flink-CEPplus with Apache License 2.0

4 votes

@Test
public void testStreamToLastSeenShardStateIsCorrectlySetWhenNoNewShardsSinceRestoredCheckpoint() throws Exception {
	List<String> fakeStreams = new LinkedList<>();
	fakeStreams.add("fakeStream1");
	fakeStreams.add("fakeStream2");

	Map<StreamShardHandle, String> restoredStateUnderTest = new HashMap<>();

	// fakeStream1 has 3 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(2))),
		UUID.randomUUID().toString());

	// fakeStream2 has 2 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());

	Map<String, Integer> streamToShardCount = new HashMap<>();
	streamToShardCount.put("fakeStream1", 3); // fakeStream1 will still have 3 shards after restore
	streamToShardCount.put("fakeStream2", 2); // fakeStream2 will still have 2 shards after restore

	HashMap<String, String> subscribedStreamsToLastSeenShardIdsUnderTest =
		KinesisDataFetcher.createInitialSubscribedStreamsToLastDiscoveredShardsState(fakeStreams);

	final TestableKinesisDataFetcher<String> fetcher =
		new TestableKinesisDataFetcher<>(
			fakeStreams,
			new TestSourceContext<>(),
			TestUtils.getStandardProperties(),
			new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
			10,
			2,
			new AtomicReference<>(),
			new LinkedList<>(),
			subscribedStreamsToLastSeenShardIdsUnderTest,
			FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(streamToShardCount));

	for (Map.Entry<StreamShardHandle, String> restoredState : restoredStateUnderTest.entrySet()) {
		fetcher.advanceLastDiscoveredShardOfStream(restoredState.getKey().getStreamName(), restoredState.getKey().getShard().getShardId());
		fetcher.registerNewSubscribedShardState(
			new KinesisStreamShardState(KinesisDataFetcher.convertToStreamShardMetadata(restoredState.getKey()),
				restoredState.getKey(), new SequenceNumber(restoredState.getValue())));
	}

	CheckedThread runFetcherThread = new CheckedThread() {
		@Override
		public void go() throws Exception {
			fetcher.runFetcher();
		}
	};
	runFetcherThread.start();

	fetcher.waitUntilInitialDiscovery();
	fetcher.shutdownFetcher();
	runFetcherThread.sync();

	// assert that the streams tracked in the state are identical to the subscribed streams
	Set<String> streamsInState = subscribedStreamsToLastSeenShardIdsUnderTest.keySet();
	assertEquals(fakeStreams.size(), streamsInState.size());
	assertTrue(streamsInState.containsAll(fakeStreams));

	// assert that the last seen shards in state is correctly set
	for (Map.Entry<String, String> streamToLastSeenShard : subscribedStreamsToLastSeenShardIdsUnderTest.entrySet()) {
		assertEquals(
			KinesisShardIdGenerator.generateFromShardOrder(streamToShardCount.get(streamToLastSeenShard.getKey()) - 1),
			streamToLastSeenShard.getValue());
	}
}

Example 20

Source File: KinesisDataFetcherTest.java From flink with Apache License 2.0

4 votes

@Test
public void testStreamToLastSeenShardStateIsCorrectlySetWhenNewShardsFoundSinceRestoredCheckpointAndSomeStreamsDoNotExist() throws Exception {
	List<String> fakeStreams = new LinkedList<>();
	fakeStreams.add("fakeStream1");
	fakeStreams.add("fakeStream2");
	fakeStreams.add("fakeStream3"); // fakeStream3 will not have any shards
	fakeStreams.add("fakeStream4"); // fakeStream4 will not have any shards

	Map<StreamShardHandle, String> restoredStateUnderTest = new HashMap<>();

	// fakeStream1 has 3 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream1",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(2))),
		UUID.randomUUID().toString());

	// fakeStream2 has 2 shards before restore
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(0))),
		UUID.randomUUID().toString());
	restoredStateUnderTest.put(
		new StreamShardHandle(
			"fakeStream2",
			new Shard().withShardId(KinesisShardIdGenerator.generateFromShardOrder(1))),
		UUID.randomUUID().toString());

	Map<String, Integer> streamToShardCount = new HashMap<>();
	streamToShardCount.put("fakeStream1", 3 + 1); // fakeStream1 had 3 shards before & 1 new shard after restore
	streamToShardCount.put("fakeStream2", 2 + 3); // fakeStream2 had 2 shards before & 2 new shard after restore
	streamToShardCount.put("fakeStream3", 0); // no shards can be found for fakeStream3
	streamToShardCount.put("fakeStream4", 0); // no shards can be found for fakeStream4

	HashMap<String, String> subscribedStreamsToLastSeenShardIdsUnderTest =
		KinesisDataFetcher.createInitialSubscribedStreamsToLastDiscoveredShardsState(fakeStreams);

	// using a non-resharded streams kinesis behaviour to represent that Kinesis is not resharded AFTER the restore
	final TestableKinesisDataFetcher<String> fetcher =
		new TestableKinesisDataFetcher<>(
			fakeStreams,
			new TestSourceContext<>(),
			TestUtils.getStandardProperties(),
			new KinesisDeserializationSchemaWrapper<>(new SimpleStringSchema()),
			10,
			2,
			new AtomicReference<>(),
			new LinkedList<>(),
			subscribedStreamsToLastSeenShardIdsUnderTest,
			FakeKinesisBehavioursFactory.nonReshardedStreamsBehaviour(streamToShardCount));

	for (Map.Entry<StreamShardHandle, String> restoredState : restoredStateUnderTest.entrySet()) {
		fetcher.advanceLastDiscoveredShardOfStream(restoredState.getKey().getStreamName(), restoredState.getKey().getShard().getShardId());
		fetcher.registerNewSubscribedShardState(
			new KinesisStreamShardState(KinesisDataFetcher.convertToStreamShardMetadata(restoredState.getKey()),
				restoredState.getKey(), new SequenceNumber(restoredState.getValue())));
	}

	CheckedThread runFetcherThread = new CheckedThread() {
		@Override
		public void go() throws Exception {
			fetcher.runFetcher();
		}
	};
	runFetcherThread.start();

	fetcher.waitUntilInitialDiscovery();
	fetcher.shutdownFetcher();
	runFetcherThread.sync();

	// assert that the streams tracked in the state are identical to the subscribed streams
	Set<String> streamsInState = subscribedStreamsToLastSeenShardIdsUnderTest.keySet();
	assertEquals(fakeStreams.size(), streamsInState.size());
	assertTrue(streamsInState.containsAll(fakeStreams));

	// assert that the last seen shards in state is correctly set
	assertEquals(
		KinesisShardIdGenerator.generateFromShardOrder(3),
		subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream1"));
	assertEquals(
		KinesisShardIdGenerator.generateFromShardOrder(4),
		subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream2"));
	assertNull(subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream3"));
	assertNull(subscribedStreamsToLastSeenShardIdsUnderTest.get("fakeStream4"));
}