GitHub user aljoscha opened a pull request:
https://github.com/apache/flink/pull/1686
[FLINK-3450] Duplicate TypeSerializer in StateDescriptor.writeObject
The StateDescriptor can be serializer asynchronously in case of
asynchronous checkpoints. In that case two threads would try to
concurrently use the TypeSerializer: The normal state updating and the
checkpoint serialization. If the TypeSerializer is a KryoSerializer this
can lead to problems. Therefore the need to duplicate it before using in
"writeObject".
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/aljoscha/flink state-descriptor-kryo-fix
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/1686.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 #1686
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commit 51d8dc9fa5cdd84b6cc1c7711af96ddabf12aaf6
Author: Aljoscha Krettek <[email protected]>
Date: 2016-02-19T14:38:57Z
[FLINK-3450] Duplicate TypeSerializer in StateDescriptor.writeObject
The StateDescriptor can be serializer asynchronously in case of
asynchronous checkpoints. In that case two threads would try to
concurrently use the TypeSerializer: The normal state updating and the
checkpoint serialization. If the TypeSerializer is a KryoSerializer this
can lead to problems. Therefore the need to duplicate it before using in
"writeObject".
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