org.apache.flink.api.common.state.ReducingState Java Examples
The following examples show how to use
org.apache.flink.api.common.state.ReducingState.
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Example #1
| Source File: StateBackendTestBase.java From flink with Apache License 2.0 | 6 votes |
|
/**
* Verify that an empty {@code ReduceState} yields {@code null}.
*/
@Test
public void testReducingStateDefaultValue() throws Exception {
AbstractKeyedStateBackend<Integer> backend = createKeyedBackend(IntSerializer.INSTANCE);
ReducingStateDescriptor<String> kvId = new ReducingStateDescriptor<>("id", new AppendingReduce(), String.class);
ReducingState<String> state = backend.getPartitionedState(
VoidNamespace.INSTANCE,
VoidNamespaceSerializer.INSTANCE, kvId);
backend.setCurrentKey(1);
assertNull(state.get());
state.add("Ciao");
assertEquals("Ciao", state.get());
state.clear();
assertNull(state.get());
backend.dispose();
}
Example #2
| Source File: ContinuousEventTimeTrigger.java From flink with Apache License 2.0 | 6 votes |
|
@Override
public TriggerResult onElement(Object element, long timestamp, W window, TriggerContext ctx) throws Exception {
if (window.maxTimestamp() <= ctx.getCurrentWatermark()) {
// if the watermark is already past the window fire immediately
return TriggerResult.FIRE;
} else {
ctx.registerEventTimeTimer(window.maxTimestamp());
}
ReducingState<Long> fireTimestamp = ctx.getPartitionedState(stateDesc);
if (fireTimestamp.get() == null) {
long start = timestamp - (timestamp % interval);
long nextFireTimestamp = start + interval;
ctx.registerEventTimeTimer(nextFireTimestamp);
fireTimestamp.add(nextFireTimestamp);
}
return TriggerResult.CONTINUE;
}
Example #3
| Source File: ContinuousEventTimeTrigger.java From flink with Apache License 2.0 | 6 votes |
|
@Override
public TriggerResult onEventTime(long time, W window, TriggerContext ctx) throws Exception {
if (time == window.maxTimestamp()){
return TriggerResult.FIRE;
}
ReducingState<Long> fireTimestampState = ctx.getPartitionedState(stateDesc);
Long fireTimestamp = fireTimestampState.get();
if (fireTimestamp != null && fireTimestamp == time) {
fireTimestampState.clear();
fireTimestampState.add(time + interval);
ctx.registerEventTimeTimer(time + interval);
return TriggerResult.FIRE;
}
return TriggerResult.CONTINUE;
}
Example #4
| Source File: ContinuousEventTimeTrigger.java From flink with Apache License 2.0 | 6 votes |
|
@Override
public TriggerResult onElement(Object element, long timestamp, W window, TriggerContext ctx) throws Exception {
if (window.maxTimestamp() <= ctx.getCurrentWatermark()) {
// if the watermark is already past the window fire immediately
return TriggerResult.FIRE;
} else {
ctx.registerEventTimeTimer(window.maxTimestamp());
}
ReducingState<Long> fireTimestamp = ctx.getPartitionedState(stateDesc);
if (fireTimestamp.get() == null) {
long start = timestamp - (timestamp % interval);
long nextFireTimestamp = start + interval;
ctx.registerEventTimeTimer(nextFireTimestamp);
fireTimestamp.add(nextFireTimestamp);
}
return TriggerResult.CONTINUE;
}
Example #5
| Source File: StateBackendTestBase.java From flink with Apache License 2.0 | 6 votes |
|
/**
* Verify that an empty {@code ReduceState} yields {@code null}.
*/
@Test
public void testReducingStateDefaultValue() throws Exception {
AbstractKeyedStateBackend<Integer> backend = createKeyedBackend(IntSerializer.INSTANCE);
ReducingStateDescriptor<String> kvId = new ReducingStateDescriptor<>("id", new AppendingReduce(), String.class);
ReducingState<String> state = backend.getPartitionedState(
VoidNamespace.INSTANCE,
VoidNamespaceSerializer.INSTANCE, kvId);
backend.setCurrentKey(1);
assertNull(state.get());
state.add("Ciao");
assertEquals("Ciao", state.get());
state.clear();
assertNull(state.get());
backend.dispose();
}
Example #6
| Source File: StateBackendTestBase.java From Flink-CEPplus with Apache License 2.0 | 6 votes |
|
/**
* Verify that an empty {@code ReduceState} yields {@code null}.
*/
@Test
public void testReducingStateDefaultValue() throws Exception {
AbstractKeyedStateBackend<Integer> backend = createKeyedBackend(IntSerializer.INSTANCE);
ReducingStateDescriptor<String> kvId = new ReducingStateDescriptor<>("id", new AppendingReduce(), String.class);
ReducingState<String> state = backend.getPartitionedState(
VoidNamespace.INSTANCE,
VoidNamespaceSerializer.INSTANCE, kvId);
backend.setCurrentKey(1);
assertNull(state.get());
state.add("Ciao");
assertEquals("Ciao", state.get());
state.clear();
assertNull(state.get());
backend.dispose();
}
Example #7
| Source File: ContinuousProcessingTimeTrigger.java From flink with Apache License 2.0 | 6 votes |
|
@Override
public TriggerResult onElement(Object element, long timestamp, W window, TriggerContext ctx) throws Exception {
ReducingState<Long> fireTimestamp = ctx.getPartitionedState(stateDesc);
timestamp = ctx.getCurrentProcessingTime();
if (fireTimestamp.get() == null) {
long start = timestamp - (timestamp % interval);
long nextFireTimestamp = start + interval;
ctx.registerProcessingTimeTimer(nextFireTimestamp);
fireTimestamp.add(nextFireTimestamp);
return TriggerResult.CONTINUE;
}
return TriggerResult.CONTINUE;
}
Example #8
| Source File: ContinuousProcessingTimeTrigger.java From flink with Apache License 2.0 | 6 votes |
|
@Override
public TriggerResult onElement(Object element, long timestamp, W window, TriggerContext ctx) throws Exception {
ReducingState<Long> fireTimestamp = ctx.getPartitionedState(stateDesc);
timestamp = ctx.getCurrentProcessingTime();
if (fireTimestamp.get() == null) {
long start = timestamp - (timestamp % interval);
long nextFireTimestamp = start + interval;
ctx.registerProcessingTimeTimer(nextFireTimestamp);
fireTimestamp.add(nextFireTimestamp);
return TriggerResult.CONTINUE;
}
return TriggerResult.CONTINUE;
}
Example #9
| Source File: ContinuousProcessingTimeTrigger.java From Flink-CEPplus with Apache License 2.0 | 6 votes |
|
@Override
public TriggerResult onElement(Object element, long timestamp, W window, TriggerContext ctx) throws Exception {
ReducingState<Long> fireTimestamp = ctx.getPartitionedState(stateDesc);
timestamp = ctx.getCurrentProcessingTime();
if (fireTimestamp.get() == null) {
long start = timestamp - (timestamp % interval);
long nextFireTimestamp = start + interval;
ctx.registerProcessingTimeTimer(nextFireTimestamp);
fireTimestamp.add(nextFireTimestamp);
return TriggerResult.CONTINUE;
}
return TriggerResult.CONTINUE;
}
Example #10
| Source File: ContinuousEventTimeTrigger.java From Flink-CEPplus with Apache License 2.0 | 6 votes |
|
@Override
public TriggerResult onElement(Object element, long timestamp, W window, TriggerContext ctx) throws Exception {
if (window.maxTimestamp() <= ctx.getCurrentWatermark()) {
// if the watermark is already past the window fire immediately
return TriggerResult.FIRE;
} else {
ctx.registerEventTimeTimer(window.maxTimestamp());
}
ReducingState<Long> fireTimestamp = ctx.getPartitionedState(stateDesc);
if (fireTimestamp.get() == null) {
long start = timestamp - (timestamp % interval);
long nextFireTimestamp = start + interval;
ctx.registerEventTimeTimer(nextFireTimestamp);
fireTimestamp.add(nextFireTimestamp);
}
return TriggerResult.CONTINUE;
}
Example #11
| Source File: ContinuousEventTimeTrigger.java From Flink-CEPplus with Apache License 2.0 | 6 votes |
|
@Override
public TriggerResult onEventTime(long time, W window, TriggerContext ctx) throws Exception {
if (time == window.maxTimestamp()){
return TriggerResult.FIRE;
}
ReducingState<Long> fireTimestampState = ctx.getPartitionedState(stateDesc);
Long fireTimestamp = fireTimestampState.get();
if (fireTimestamp != null && fireTimestamp == time) {
fireTimestampState.clear();
fireTimestampState.add(time + interval);
ctx.registerEventTimeTimer(time + interval);
return TriggerResult.FIRE;
}
return TriggerResult.CONTINUE;
}
Example #12
| Source File: ContinuousEventTimeTrigger.java From flink with Apache License 2.0 | 6 votes |
|
@Override
public TriggerResult onEventTime(long time, W window, TriggerContext ctx) throws Exception {
if (time == window.maxTimestamp()){
return TriggerResult.FIRE;
}
ReducingState<Long> fireTimestampState = ctx.getPartitionedState(stateDesc);
Long fireTimestamp = fireTimestampState.get();
if (fireTimestamp != null && fireTimestamp == time) {
fireTimestampState.clear();
fireTimestampState.add(time + interval);
ctx.registerEventTimeTimer(time + interval);
return TriggerResult.FIRE;
}
return TriggerResult.CONTINUE;
}
Example #13
| Source File: SavepointRuntimeContext.java From flink with Apache License 2.0 | 5 votes |
|
@Override
public <T> ReducingState<T> getReducingState(ReducingStateDescriptor<T> stateProperties) {
if (!stateRegistrationAllowed) {
throw new RuntimeException(REGISTRATION_EXCEPTION_MSG);
}
registeredDescriptors.add(stateProperties);
return keyedStateStore.getReducingState(stateProperties);
}
Example #14
| Source File: DefaultKeyedStateStore.java From flink with Apache License 2.0 | 5 votes |
|
@Override
public <T> ReducingState<T> getReducingState(ReducingStateDescriptor<T> stateProperties) {
requireNonNull(stateProperties, "The state properties must not be null");
try {
stateProperties.initializeSerializerUnlessSet(executionConfig);
return getPartitionedState(stateProperties);
} catch (Exception e) {
throw new RuntimeException("Error while getting state", e);
}
}
Example #15
| Source File: DefaultKeyedStateStore.java From flink with Apache License 2.0 | 5 votes |
|
@Override
public <T> ReducingState<T> getReducingState(ReducingStateDescriptor<T> stateProperties) {
requireNonNull(stateProperties, "The state properties must not be null");
try {
stateProperties.initializeSerializerUnlessSet(executionConfig);
return getPartitionedState(stateProperties);
} catch (Exception e) {
throw new RuntimeException("Error while getting state", e);
}
}
Example #16
| Source File: DefaultKeyedStateStore.java From Flink-CEPplus with Apache License 2.0 | 5 votes |
|
@Override
public <T> ReducingState<T> getReducingState(ReducingStateDescriptor<T> stateProperties) {
requireNonNull(stateProperties, "The state properties must not be null");
try {
stateProperties.initializeSerializerUnlessSet(executionConfig);
return getPartitionedState(stateProperties);
} catch (Exception e) {
throw new RuntimeException("Error while getting state", e);
}
}
Example #17
| Source File: ContinuousProcessingTimeTrigger.java From flink with Apache License 2.0 | 5 votes |
|
@Override
public void clear(W window, TriggerContext ctx) throws Exception {
ReducingState<Long> fireTimestamp = ctx.getPartitionedState(stateDesc);
long timestamp = fireTimestamp.get();
ctx.deleteProcessingTimeTimer(timestamp);
fireTimestamp.clear();
}
Example #18
| Source File: ElementTriggers.java From flink with Apache License 2.0 | 5 votes |
|
@Override
public boolean onElement(Object element, long timestamp, W window) throws Exception {
ReducingState<Long> count = ctx.getPartitionedState(countStateDesc);
count.add(1L);
if (count.get() >= countElems) {
count.clear();
return true;
} else {
return false;
}
}
Example #19
| Source File: CountTrigger.java From Flink-CEPplus with Apache License 2.0 | 5 votes |
|
@Override
public TriggerResult onElement(Object element, long timestamp, W window, TriggerContext ctx) throws Exception {
ReducingState<Long> count = ctx.getPartitionedState(stateDesc);
count.add(1L);
if (count.get() >= maxCount) {
count.clear();
return TriggerResult.FIRE;
}
return TriggerResult.CONTINUE;
}
Example #20
| Source File: ContinuousProcessingTimeTrigger.java From Flink-CEPplus with Apache License 2.0 | 5 votes |
|
@Override
public void clear(W window, TriggerContext ctx) throws Exception {
ReducingState<Long> fireTimestamp = ctx.getPartitionedState(stateDesc);
long timestamp = fireTimestamp.get();
ctx.deleteProcessingTimeTimer(timestamp);
fireTimestamp.clear();
}
Example #21
| Source File: ProcessingTimeTriggers.java From flink with Apache License 2.0 | 5 votes |
|
@Override
public void clear(W window) throws Exception {
ReducingState<Long> nextFiring = ctx.getPartitionedState(nextFiringStateDesc);
Long timer = nextFiring.get();
if (timer != null) {
ctx.deleteProcessingTimeTimer(timer);
nextFiring.clear();
}
}
Example #22
| Source File: SavepointRuntimeContext.java From flink with Apache License 2.0 | 5 votes |
|
@Override
public <T> ReducingState<T> getReducingState(ReducingStateDescriptor<T> stateProperties) {
if (!stateRegistrationAllowed) {
throw new RuntimeException(REGISTRATION_EXCEPTION_MSG);
}
registeredDescriptors.add(stateProperties);
return keyedStateStore.getReducingState(stateProperties);
}
Example #23
| Source File: ContinuousEventTimeTrigger.java From flink with Apache License 2.0 | 5 votes |
|
@Override
public void clear(W window, TriggerContext ctx) throws Exception {
ReducingState<Long> fireTimestamp = ctx.getPartitionedState(stateDesc);
Long timestamp = fireTimestamp.get();
if (timestamp != null) {
ctx.deleteEventTimeTimer(timestamp);
fireTimestamp.clear();
}
}
Example #24
| Source File: CountTrigger.java From flink with Apache License 2.0 | 5 votes |
|
@Override
public TriggerResult onElement(Object element, long timestamp, W window, TriggerContext ctx) throws Exception {
ReducingState<Long> count = ctx.getPartitionedState(stateDesc);
count.add(1L);
if (count.get() >= maxCount) {
count.clear();
return TriggerResult.FIRE;
}
return TriggerResult.CONTINUE;
}
Example #25
| Source File: ContinuousProcessingTimeTrigger.java From flink with Apache License 2.0 | 5 votes |
|
@Override
public TriggerResult onProcessingTime(long time, W window, TriggerContext ctx) throws Exception {
ReducingState<Long> fireTimestamp = ctx.getPartitionedState(stateDesc);
if (fireTimestamp.get().equals(time)) {
fireTimestamp.clear();
fireTimestamp.add(time + interval);
ctx.registerProcessingTimeTimer(time + interval);
return TriggerResult.FIRE;
}
return TriggerResult.CONTINUE;
}
Example #26
| Source File: ContinuousProcessingTimeTrigger.java From flink with Apache License 2.0 | 5 votes |
|
@Override
public void clear(W window, TriggerContext ctx) throws Exception {
ReducingState<Long> fireTimestamp = ctx.getPartitionedState(stateDesc);
long timestamp = fireTimestamp.get();
ctx.deleteProcessingTimeTimer(timestamp);
fireTimestamp.clear();
}
Example #27
| Source File: ProcessingTimeTriggers.java From flink with Apache License 2.0 | 5 votes |
|
@Override
public void clear(W window) throws Exception {
ReducingState<Long> nextFiring = ctx.getPartitionedState(nextFiringStateDesc);
Long timer = nextFiring.get();
if (timer != null) {
ctx.deleteProcessingTimeTimer(timer);
nextFiring.clear();
}
}
Example #28
| Source File: ProcessingTimeTriggers.java From flink with Apache License 2.0 | 5 votes |
|
@Override
public boolean onProcessingTime(long time, W window) throws Exception {
ReducingState<Long> nextFiring = ctx.getPartitionedState(nextFiringStateDesc);
Long timer = nextFiring.get();
if (timer != null && timer == time) {
long newTimer = time + interval;
ctx.registerProcessingTimeTimer(newTimer);
nextFiring.clear();
nextFiring.add(newTimer);
return true;
} else {
return false;
}
}
Example #29
| Source File: ProcessingTimeTriggers.java From flink with Apache License 2.0 | 5 votes |
|
@Override
public boolean onElement(Object element, long timestamp, W window) throws Exception {
ReducingState<Long> nextFiring = ctx.getPartitionedState(nextFiringStateDesc);
if (nextFiring.get() == null) {
long nextTimer = ctx.getCurrentProcessingTime() + interval;
ctx.registerProcessingTimeTimer(nextTimer);
nextFiring.add(nextTimer);
}
return false;
}
Example #30
| Source File: ElementTriggers.java From flink with Apache License 2.0 | 5 votes |
|
@Override
public boolean onElement(Object element, long timestamp, W window) throws Exception {
ReducingState<Long> count = ctx.getPartitionedState(countStateDesc);
count.add(1L);
if (count.get() >= countElems) {
count.clear();
return true;
} else {
return false;
}
}
