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https://issues.apache.org/jira/browse/FLINK-6207?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15945525#comment-15945525
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ASF GitHub Bot commented on FLINK-6207:
---------------------------------------
Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/3634#discussion_r108473910
--- Diff:
flink-runtime/src/test/java/org/apache/flink/runtime/state/heap/CopyOnWriteStateTableTest.java
---
@@ -380,6 +385,77 @@ public void testCopyOnWriteContracts() {
Assert.assertTrue(originalState5 == stateTable.get(5, 1));
}
+ /**
--- End diff --
The `CopyOnWriteStateTableTest` could extend the `TestLogger`. That way we
get better logging output on Travis.
> Duplicate type serializers for async snapshots of CopyOnWriteStateTable
> -----------------------------------------------------------------------
>
> Key: FLINK-6207
> URL: https://issues.apache.org/jira/browse/FLINK-6207
> Project: Flink
> Issue Type: Bug
> Components: State Backends, Checkpointing
> Reporter: Stefan Richter
> Assignee: Stefan Richter
> Fix For: 1.3.0
>
>
> {{TypeSerializer}} are used for copy-on-write and the parallel snapshots in
> the {{CopyOnWriteStateTable}}. For stateful serializers, this can lead to
> race conditions. Snapshots need to duplicate the serializers before using
> them.
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