org.apache.flink.hadoopcompatibility.mapred.HadoopReduceFunction Java Examples

The following examples show how to use org.apache.flink.hadoopcompatibility.mapred.HadoopReduceFunction. 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: HadoopReduceFunctionITCase.java    From Flink-CEPplus with Apache License 2.0 6 votes vote down vote up 
@Test
public void testStandardGrouping() throws Exception{
	final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	DataSet<Tuple2<IntWritable, Text>> ds = HadoopTestData.getKVPairDataSet(env).
			map(new Mapper1());

	DataSet<Tuple2<IntWritable, IntWritable>> commentCnts = ds.
			groupBy(0).
			reduceGroup(new HadoopReduceFunction<IntWritable, Text, IntWritable, IntWritable>(new CommentCntReducer()));

	String resultPath = tempFolder.newFile().toURI().toString();

	commentCnts.writeAsText(resultPath);
	env.execute();

	String expected = "(0,0)\n" +
			"(1,3)\n" +
			"(2,5)\n" +
			"(3,5)\n" +
			"(4,2)\n";

	compareResultsByLinesInMemory(expected, resultPath);
}
Example #2
Source File: HadoopReduceFunctionITCase.java    From flink with Apache License 2.0 6 votes vote down vote up 
@Test
public void testStandardGrouping() throws Exception{
	final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	DataSet<Tuple2<IntWritable, Text>> ds = HadoopTestData.getKVPairDataSet(env).
			map(new Mapper1());

	DataSet<Tuple2<IntWritable, IntWritable>> commentCnts = ds.
			groupBy(0).
			reduceGroup(new HadoopReduceFunction<IntWritable, Text, IntWritable, IntWritable>(new CommentCntReducer()));

	String resultPath = tempFolder.newFile().toURI().toString();

	commentCnts.writeAsText(resultPath);
	env.execute();

	String expected = "(0,0)\n" +
			"(1,3)\n" +
			"(2,5)\n" +
			"(3,5)\n" +
			"(4,2)\n";

	compareResultsByLinesInMemory(expected, resultPath);
}
Example #3
Source File: HadoopReduceFunctionITCase.java    From flink with Apache License 2.0 6 votes vote down vote up 
@Test
public void testStandardGrouping() throws Exception{
	final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	DataSet<Tuple2<IntWritable, Text>> ds = HadoopTestData.getKVPairDataSet(env).
			map(new Mapper1());

	DataSet<Tuple2<IntWritable, IntWritable>> commentCnts = ds.
			groupBy(0).
			reduceGroup(new HadoopReduceFunction<IntWritable, Text, IntWritable, IntWritable>(new CommentCntReducer()));

	String resultPath = tempFolder.newFile().toURI().toString();

	commentCnts.writeAsText(resultPath);
	env.execute();

	String expected = "(0,0)\n" +
			"(1,3)\n" +
			"(2,5)\n" +
			"(3,5)\n" +
			"(4,2)\n";

	compareResultsByLinesInMemory(expected, resultPath);
}
Example #4
Source File: HadoopReduceFunctionITCase.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
@Test
public void testConfigurationViaJobConf() throws Exception {
	final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	JobConf conf = new JobConf();
	conf.set("my.cntPrefix", "Hello");

	DataSet<Tuple2<IntWritable, Text>> ds = HadoopTestData.getKVPairDataSet(env).
			map(new Mapper2());

	DataSet<Tuple2<IntWritable, IntWritable>> helloCnts = ds.
			groupBy(0).
			reduceGroup(new HadoopReduceFunction<IntWritable, Text, IntWritable, IntWritable>(
					new ConfigurableCntReducer(), conf));

	String resultPath = tempFolder.newFile().toURI().toString();

	helloCnts.writeAsText(resultPath);
	env.execute();

	String expected = "(0,0)\n" +
			"(1,0)\n" +
			"(2,1)\n" +
			"(3,1)\n" +
			"(4,1)\n";

	compareResultsByLinesInMemory(expected, resultPath);
}
Example #5
Source File: HadoopReduceCombineFunctionITCase.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
@Test
public void testConfigurationViaJobConf() throws Exception {
	final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	JobConf conf = new JobConf();
	conf.set("my.cntPrefix", "Hello");

	DataSet<Tuple2<IntWritable, Text>> ds = HadoopTestData.getKVPairDataSet(env).
			map(new Mapper4());

	DataSet<Tuple2<IntWritable, IntWritable>> hellos = ds.
			groupBy(0).
			reduceGroup(new HadoopReduceFunction<IntWritable, Text, IntWritable, IntWritable>(
					new ConfigurableCntReducer(), conf));

	String resultPath = tempFolder.newFile().toURI().toString();

	hellos.writeAsText(resultPath);
	env.execute();

	// return expected result
	String expected = "(0,0)\n" +
			"(1,0)\n" +
			"(2,1)\n" +
			"(3,1)\n" +
			"(4,1)\n";

	compareResultsByLinesInMemory(expected, resultPath);
}
Example #6
Source File: HadoopReduceFunctionITCase.java    From flink with Apache License 2.0 5 votes vote down vote up 
@Test
public void testConfigurationViaJobConf() throws Exception {
	final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	JobConf conf = new JobConf();
	conf.set("my.cntPrefix", "Hello");

	DataSet<Tuple2<IntWritable, Text>> ds = HadoopTestData.getKVPairDataSet(env).
			map(new Mapper2());

	DataSet<Tuple2<IntWritable, IntWritable>> helloCnts = ds.
			groupBy(0).
			reduceGroup(new HadoopReduceFunction<IntWritable, Text, IntWritable, IntWritable>(
					new ConfigurableCntReducer(), conf));

	String resultPath = tempFolder.newFile().toURI().toString();

	helloCnts.writeAsText(resultPath);
	env.execute();

	String expected = "(0,0)\n" +
			"(1,0)\n" +
			"(2,1)\n" +
			"(3,1)\n" +
			"(4,1)\n";

	compareResultsByLinesInMemory(expected, resultPath);
}
Example #7
Source File: HadoopReduceCombineFunctionITCase.java    From flink with Apache License 2.0 5 votes vote down vote up 
@Test
public void testConfigurationViaJobConf() throws Exception {
	final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	JobConf conf = new JobConf();
	conf.set("my.cntPrefix", "Hello");

	DataSet<Tuple2<IntWritable, Text>> ds = HadoopTestData.getKVPairDataSet(env).
			map(new Mapper4());

	DataSet<Tuple2<IntWritable, IntWritable>> hellos = ds.
			groupBy(0).
			reduceGroup(new HadoopReduceFunction<IntWritable, Text, IntWritable, IntWritable>(
					new ConfigurableCntReducer(), conf));

	String resultPath = tempFolder.newFile().toURI().toString();

	hellos.writeAsText(resultPath);
	env.execute();

	// return expected result
	String expected = "(0,0)\n" +
			"(1,0)\n" +
			"(2,1)\n" +
			"(3,1)\n" +
			"(4,1)\n";

	compareResultsByLinesInMemory(expected, resultPath);
}
Example #8
Source File: HadoopReduceFunctionITCase.java    From flink with Apache License 2.0 5 votes vote down vote up 
@Test
public void testConfigurationViaJobConf() throws Exception {
	final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	JobConf conf = new JobConf();
	conf.set("my.cntPrefix", "Hello");

	DataSet<Tuple2<IntWritable, Text>> ds = HadoopTestData.getKVPairDataSet(env).
			map(new Mapper2());

	DataSet<Tuple2<IntWritable, IntWritable>> helloCnts = ds.
			groupBy(0).
			reduceGroup(new HadoopReduceFunction<IntWritable, Text, IntWritable, IntWritable>(
					new ConfigurableCntReducer(), conf));

	String resultPath = tempFolder.newFile().toURI().toString();

	helloCnts.writeAsText(resultPath);
	env.execute();

	String expected = "(0,0)\n" +
			"(1,0)\n" +
			"(2,1)\n" +
			"(3,1)\n" +
			"(4,1)\n";

	compareResultsByLinesInMemory(expected, resultPath);
}
Example #9
Source File: HadoopReduceCombineFunctionITCase.java    From flink with Apache License 2.0 5 votes vote down vote up 
@Test
public void testConfigurationViaJobConf() throws Exception {
	final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	JobConf conf = new JobConf();
	conf.set("my.cntPrefix", "Hello");

	DataSet<Tuple2<IntWritable, Text>> ds = HadoopTestData.getKVPairDataSet(env).
			map(new Mapper4());

	DataSet<Tuple2<IntWritable, IntWritable>> hellos = ds.
			groupBy(0).
			reduceGroup(new HadoopReduceFunction<IntWritable, Text, IntWritable, IntWritable>(
					new ConfigurableCntReducer(), conf));

	String resultPath = tempFolder.newFile().toURI().toString();

	hellos.writeAsText(resultPath);
	env.execute();

	// return expected result
	String expected = "(0,0)\n" +
			"(1,0)\n" +
			"(2,1)\n" +
			"(3,1)\n" +
			"(4,1)\n";

	compareResultsByLinesInMemory(expected, resultPath);
}
Example #10
Source File: HadoopReduceFunctionITCase.java    From Flink-CEPplus with Apache License 2.0 4 votes vote down vote up 
@Test
public void testUngroupedHadoopReducer() throws Exception {
	final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	DataSet<Tuple2<IntWritable, Text>> ds = HadoopTestData.getKVPairDataSet(env);

	DataSet<Tuple2<IntWritable, IntWritable>> commentCnts = ds.
			reduceGroup(new HadoopReduceFunction<IntWritable, Text, IntWritable, IntWritable>(new AllCommentCntReducer()));

	String resultPath = tempFolder.newFile().toURI().toString();

	commentCnts.writeAsText(resultPath);
	env.execute();

	String expected = "(42,15)\n";

	compareResultsByLinesInMemory(expected, resultPath);
}
Example #11
Source File: HadoopReduceFunctionITCase.java    From flink with Apache License 2.0 4 votes vote down vote up 
@Test
public void testUngroupedHadoopReducer() throws Exception {
	final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	DataSet<Tuple2<IntWritable, Text>> ds = HadoopTestData.getKVPairDataSet(env);

	DataSet<Tuple2<IntWritable, IntWritable>> commentCnts = ds.
			reduceGroup(new HadoopReduceFunction<IntWritable, Text, IntWritable, IntWritable>(new AllCommentCntReducer()));

	String resultPath = tempFolder.newFile().toURI().toString();

	commentCnts.writeAsText(resultPath);
	env.execute();

	String expected = "(42,15)\n";

	compareResultsByLinesInMemory(expected, resultPath);
}
Example #12
Source File: HadoopReduceFunctionITCase.java    From flink with Apache License 2.0 4 votes vote down vote up 
@Test
public void testUngroupedHadoopReducer() throws Exception {
	final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	DataSet<Tuple2<IntWritable, Text>> ds = HadoopTestData.getKVPairDataSet(env);

	DataSet<Tuple2<IntWritable, IntWritable>> commentCnts = ds.
			reduceGroup(new HadoopReduceFunction<IntWritable, Text, IntWritable, IntWritable>(new AllCommentCntReducer()));

	String resultPath = tempFolder.newFile().toURI().toString();

	commentCnts.writeAsText(resultPath);
	env.execute();

	String expected = "(42,15)\n";

	compareResultsByLinesInMemory(expected, resultPath);
}