Daniel Harper created FLINK-10844:
-------------------------------------
Summary: ArrayIndexOutOfBoundsException during checkpoint (Flink
1.5.2)
Key: FLINK-10844
URL: https://issues.apache.org/jira/browse/FLINK-10844
Project: Flink
Issue Type: Improvement
Components: Core
Environment: Flink 1.5.2
AWS EMR 5.17.0
Reporter: Daniel Harper
We have seen this exception a few times in our production environment during
checkpoints, which causes the job to restart
{code}
AsynchronousException{java.lang.Exception: Could not materialize checkpoint
2426 for operator
x.x.x.x.streaming.pipeline.transformations.concurrentstreams.ConcurrentStreamsAggregator
PERFORM COUNT DISTINCT OVER UUIDS FOR KEY ->
ParDo(ToConcurrentStreamsResult)/ParMultiDo(ToConcurrentStreamsResult) ->
JdbcIO.Write/ParDo(Write)/ParMultiDo(Write) (28/32).}
at
org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointExceptionHandler.tryHandleCheckpointException(StreamTask.java:1154)
at
org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.handleExecutionException(StreamTask.java:948)
at
org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:885)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.Exception: Could not materialize checkpoint 2426 for
operator
x.x.x.x.streaming.pipeline.transformations.concurrentstreams.ConcurrentStreamsAggregator
PERFORM COUNT DISTINCT OVER UUIDS FOR KEY ->
ParDo(ToConcurrentStreamsResult)/ParMultiDo(ToConcurrentStreamsResult) ->
JdbcIO.Write/ParDo(Write)/ParMultiDo(Write) (28/32).
at
org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.handleExecutionException(StreamTask.java:943)
... 6 more
Caused by: java.util.concurrent.ExecutionException:
java.lang.ArrayIndexOutOfBoundsException: -22
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at
org.apache.flink.util.FutureUtil.runIfNotDoneAndGet(FutureUtil.java:53)
at
org.apache.flink.streaming.api.operators.OperatorSnapshotFinalizer.<init>(OperatorSnapshotFinalizer.java:47)
at
org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:854)
... 5 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: -22
at
org.apache.flink.runtime.state.heap.CopyOnWriteStateTableSnapshot.partitionEntriesByKeyGroup(CopyOnWriteStateTableSnapshot.java:162)
at
org.apache.flink.runtime.state.heap.CopyOnWriteStateTableSnapshot.writeMappingsInKeyGroup(CopyOnWriteStateTableSnapshot.java:178)
at
org.apache.flink.runtime.state.heap.HeapKeyedStateBackend$HeapSnapshotStrategy$1.performOperation(HeapKeyedStateBackend.java:697)
at
org.apache.flink.runtime.state.heap.HeapKeyedStateBackend$HeapSnapshotStrategy$1.performOperation(HeapKeyedStateBackend.java:641)
at
org.apache.flink.runtime.io.async.AbstractAsyncCallableWithResources.call(AbstractAsyncCallableWithResources.java:75)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
org.apache.flink.util.FutureUtil.runIfNotDoneAndGet(FutureUtil.java:50)
... 7 more
{code}
Looks like the index being computed here:
https://github.com/apache/flink/blob/release-1.5.2/flink-runtime/src/main/java/org/apache/flink/runtime/state/heap/CopyOnWriteStateTableSnapshot.java#L161
Is returning -22, causing the AOOB exception to fire
https://github.com/apache/flink/blob/release-1.5.2/flink-runtime/src/main/java/org/apache/flink/runtime/state/heap/CopyOnWriteStateTableSnapshot.java#L162
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