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https://issues.apache.org/jira/browse/FLINK-6207?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15945463#comment-15945463
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ASF GitHub Bot commented on FLINK-6207:
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GitHub user StefanRRichter opened a pull request:
https://github.com/apache/flink/pull/3634
[FLINK-6207] Duplicate TypeSerializers for async snapshots of CopyOnW…
This PR fixes a problem for stateful serializers for async snapshots in the
`CopyOnWriteStateTable`. Serializers must be duplicated before they are used in
the async snapshot thread.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/StefanRRichter/flink fix-serialier-duplicate
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/3634.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3634
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commit 63f661067aa90a4b53161fb1bf4e84fcf54b9c10
Author: Stefan Richter <[email protected]>
Date: 2017-03-28T14:56:27Z
[FLINK-6207] Duplicate TypeSerializers for async snapshots of
CopyOnWriteStateTable
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> 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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