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From Michał Ciesielczyk (JIRA) <j...@apache.org>
Subject [jira] [Commented] (FLINK-10714) java.lang.IndexOutOfBoundsException when creating a heap backend snapshot
Date Tue, 30 Oct 2018 11:54:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-10714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16668611#comment-16668611
] 

Michał Ciesielczyk commented on FLINK-10714:
--------------------------------------------

I've attached a code sample for a Flink job that should reproduce the error (FailingJob.scala).
Bare in mind, that the failures are not deterministic. On my local env, Flink usually creates
from 10 to 2000 checkpoints before it fails.

> java.lang.IndexOutOfBoundsException when creating a heap backend snapshot
> -------------------------------------------------------------------------
>
>                 Key: FLINK-10714
>                 URL: https://issues.apache.org/jira/browse/FLINK-10714
>             Project: Flink
>          Issue Type: Bug
>          Components: Type Serialization System
>    Affects Versions: 1.5.5, 1.6.2
>         Environment: Flink 1.6.2, FsStateBackend
>            Reporter: Michał Ciesielczyk
>            Priority: Blocker
>             Fix For: 1.7.0
>
>         Attachments: FailingJob.scala
>
>
> I'm sometimes getting error while creating a checkpointing using a filesystem state backend.
This ONLY happens when asynchronous snapshots are enabled using the FileSystem State Backend.
When RocksDB is enabled everything works fine.
>  
> I'm using a simple KeyedStream,mapWithState function with a ValueState holding a  hashmap
(scala.collection.immutable.Map). It's hard to reproduce the error using a simple code snippet,
as the error occurs randomly.
>  
> This issue may be similar to FLINK-7484 and FLINK-8836 (both already fixed), but I'm
still experiencing such behavior.
>   
> Stacktrace:
>  
> {code:java}
> java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
>     at java.util.ArrayList.rangeCheck(ArrayList.java:657) ~[?:1.8.0_172]
>     at java.util.ArrayList.set(ArrayList.java:448) ~[?:1.8.0_172]
>     at com.esotericsoftware.kryo.util.MapReferenceResolver.setReadObject(MapReferenceResolver.java:56)
~[kryo-shaded-4.0.0.jar:?]
>     at com.esotericsoftware.kryo.Kryo.reference(Kryo.java:875) ~[kryo-shaded-4.0.0.jar:?]
>     at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:710) ~[kryo-shaded-4.0.0.jar:?]
>     at org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.copy(KryoSerializer.java:231)
~[flink-core-1.6.1.jar:1.6.1]
>     at org.apache.flink.api.scala.typeutils.CaseClassSerializer.copy(CaseClassSerializer.scala:101)
~[flink-scala_2.11-1.6.1.jar:1.6.1]
>     at org.apache.flink.api.scala.typeutils.CaseClassSerializer.copy(CaseClassSerializer.scala:32)
~[flink-scala_2.11-1.6.1.jar:1.6.1]
>     at org.apache.flink.api.scala.typeutils.TraversableSerializer$$anonfun$copy$1.apply(TraversableSerializer.scala:69)
~[flink-scala_2.11-1.6.1.jar:1.6.1]
>     at org.apache.flink.api.scala.typeutils.TraversableSerializer$$anonfun$copy$1.apply(TraversableSerializer.scala:69)
~[flink-scala_2.11-1.6.1.jar:1.6.1]
>     at scala.collection.immutable.HashMap$HashMap1.foreach(HashMap.scala:221) ~[scala-library-2.11.12.jar:?]
>     at scala.collection.immutable.HashMap$HashTrieMap.foreach(HashMap.scala:428) ~[scala-library-2.11.12.jar:?]
>     at org.apache.flink.api.scala.typeutils.TraversableSerializer.copy(TraversableSerializer.scala:69)
~[flink-scala_2.11-1.6.1.jar:1.6.1]
>     at org.apache.flink.api.scala.typeutils.TraversableSerializer.copy(TraversableSerializer.scala:33)
~[flink-scala_2.11-1.6.1.jar:1.6.1]
>     at org.apache.flink.api.scala.typeutils.CaseClassSerializer.copy(CaseClassSerializer.scala:101)
~[flink-scala_2.11-1.6.1.jar:1.6.1]
>     at org.apache.flink.api.scala.typeutils.CaseClassSerializer.copy(CaseClassSerializer.scala:32)
~[flink-scala_2.11-1.6.1.jar:1.6.1]
>     at org.apache.flink.runtime.state.heap.CopyOnWriteStateTable.get(CopyOnWriteStateTable.java:287)
~[flink-runtime_2.11-1.6.1.jar:1.6.1]
>     at org.apache.flink.runtime.state.heap.CopyOnWriteStateTable.get(CopyOnWriteStateTable.java:311)
~[flink-runtime_2.11-1.6.1.jar:1.6.1]
>     at org.apache.flink.runtime.state.heap.HeapValueState.value(HeapValueState.java:73)
~[flink-runtime_2.11-1.6.1.jar:1.6.1]
>     at org.apache.flink.streaming.api.operators.StreamGroupedReduce.processElement(StreamGroupedReduce.java:59)
~[flink-streaming-java_2.11-1.6.1.jar:1.6.1]
>     at org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:202)
~[flink-streaming-java_2.11-1.6.1.jar:1.6.1]
>     at org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:105)
~[flink-streaming-java_2.11-1.6.1.jar:1.6.1]
>     at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:300)
~[flink-streaming-java_2.11-1.6.1.jar:1.6.1]
>     at org.apache.flink.runtime.taskmanager.Task.run(Task.java:711) [flink-runtime_2.11-1.6.1.jar:1.6.1]
>     at java.lang.Thread.run(Thread.java:748) [?:1.8.0_172]
> {code}
>  
> Edit:
> I've attached a code sample for a Flink job that should reproduce the error (FailingJob.scala).
Bare in mind, that the failures are not deterministic. On my local env, Flink usually creates
from 10 to 2000 checkpoints before it fails.
>  



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