[FLINK-5463] RocksDB.disposeInternal does not react to interrupts, blocks task cancellation

• Type: Bug
• Status: Reopened
• Priority: Not a Priority
• Resolution: Unresolved
• Affects Version/s: 1.2.0, 1.9.0
• Component/s: Runtime / State Backends
• Labels: auto-deprioritized-major auto-deprioritized-minor
• Assignee: Unassigned
• Reporter: Robert Metzger
• Created: 11/Jan/17 20:32
• Updated: 08/Nov/22 04:33

Description

I'm using Flink 699f4b0.
My Flink job is slow while cancelling because RockDB seems to be busy with disposing its state:

2017-01-11 18:48:23,315 INFO  org.apache.flink.runtime.taskmanager.Task                     - Triggering cancellation of task code TriggerWindow(TumblingEventTimeWindows(4), ListStateDescriptor{serializer=org.apache.flink.api.java.typeutils.runtime.TupleSerializer@2edcd071
}, EventTimeTrigger(), WindowedStream.apply(AllWindowedStream.java:440)) (1/1) (2accc6ca2727c4f7ec963318fbd237e9).
2017-01-11 18:48:53,318 WARN  org.apache.flink.runtime.taskmanager.Task                     - Task 'TriggerWindow(TumblingEventTimeWindows(4), ListStateDescriptor{serializer=org.apache.flink.api.java.typeutils.runtime.TupleSerializer@2edcd071}, EventTimeTrigger(), Windowed
Stream.apply(AllWindowedStream.java:440)) (1/1)' did not react to cancelling signal, but is stuck in method:
 org.rocksdb.RocksDB.disposeInternal(Native Method)
org.rocksdb.RocksObject.disposeInternal(RocksObject.java:37)
org.rocksdb.AbstractImmutableNativeReference.close(AbstractImmutableNativeReference.java:56)
org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend.dispose(RocksDBKeyedStateBackend.java:250)
org.apache.flink.streaming.api.operators.AbstractStreamOperator.dispose(AbstractStreamOperator.java:331)
org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.dispose(AbstractUdfStreamOperator.java:169)
org.apache.flink.streaming.runtime.operators.windowing.WindowOperator.dispose(WindowOperator.java:273)
org.apache.flink.streaming.runtime.tasks.StreamTask.disposeAllOperators(StreamTask.java:439)
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:340)
org.apache.flink.runtime.taskmanager.Task.run(Task.java:654)
java.lang.Thread.run(Thread.java:745)

2017-01-11 18:48:53,319 WARN  org.apache.flink.runtime.taskmanager.Task                     - Task 'TriggerWindow(TumblingEventTimeWindows(4), ListStateDescriptor{serializer=org.apache.flink.api.java.typeutils.runtime.TupleSerializer@2edcd071}, EventTimeTrigger(), WindowedStream.apply(AllWindowedStream.java:440)) (1/1)' did not react to cancelling signal, but is stuck in method:
 org.rocksdb.RocksDB.disposeInternal(Native Method)
org.rocksdb.RocksObject.disposeInternal(RocksObject.java:37)
org.rocksdb.AbstractImmutableNativeReference.close(AbstractImmutableNativeReference.java:56)
org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend.dispose(RocksDBKeyedStateBackend.java:250)
org.apache.flink.streaming.api.operators.AbstractStreamOperator.dispose(AbstractStreamOperator.java:331)
org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.dispose(AbstractUdfStreamOperator.java:169)
org.apache.flink.streaming.runtime.operators.windowing.WindowOperator.dispose(WindowOperator.java:273)
org.apache.flink.streaming.runtime.tasks.StreamTask.disposeAllOperators(StreamTask.java:439)
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:340)
org.apache.flink.runtime.taskmanager.Task.run(Task.java:654)
java.lang.Thread.run(Thread.java:745)

2017-01-11 18:49:23,319 WARN  org.apache.flink.runtime.taskmanager.Task                     - Task 'TriggerWindow(TumblingEventTimeWindows(4), ListStateDescriptor{serializer=org.apache.flink.api.java.typeutils.runtime.TupleSerializer@2edcd071}, EventTimeTrigger(), WindowedStream.apply(AllWindowedStream.java:440)) (1/1)' did not react to cancelling signal, but is stuck in method:
 org.rocksdb.RocksDB.disposeInternal(Native Method)
org.rocksdb.RocksObject.disposeInternal(RocksObject.java:37)
org.rocksdb.AbstractImmutableNativeReference.close(AbstractImmutableNativeReference.java:56)
org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend.dispose(RocksDBKeyedStateBackend.java:250)
org.apache.flink.streaming.api.operators.AbstractStreamOperator.dispose(AbstractStreamOperator.java:331)
org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.dispose(AbstractUdfStreamOperator.java:169)
org.apache.flink.streaming.runtime.operators.windowing.WindowOperator.dispose(WindowOperator.java:273)
org.apache.flink.streaming.runtime.tasks.StreamTask.disposeAllOperators(StreamTask.java:439)
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:340)
org.apache.flink.runtime.taskmanager.Task.run(Task.java:654)
java.lang.Thread.run(Thread.java:745)

2017-01-11 18:49:50,080 INFO  org.apache.flink.runtime.taskmanager.Task                     - Freeing task resources for TriggerWindow(TumblingEventTimeWindows(4), ListStateDescriptor{serializer=org.apache.flink.api.java.typeutils.runtime.TupleSerializer@2edcd071}, EventTimeTrigger(), WindowedStream.apply(AllWindowedStream.java:440)) (1/1) (2accc6ca2727c4f7ec963318fbd237e9)

I'm filing this issue because I didn't see such a behavior in Flink 1.1. I guess Flink's code should be well behaved when it comes to cancelling tasks.

Issue Links

• is duplicated by: FLINK-20044 Disposal of RocksDB could last forever