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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2016/08/21 20:05:20 UTC
[jira] [Commented] (FLINK-4441) RocksDB statebackend makes all
operators appear stateful
[ https://issues.apache.org/jira/browse/FLINK-4441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15429881#comment-15429881 ]
ASF GitHub Bot commented on FLINK-4441:
---------------------------------------
GitHub user gyfora opened a pull request:
https://github.com/apache/flink/pull/2399
[FLINK-4441] Make RocksDB backend return null on empty state
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If your changes take all of the items into account, feel free to open your pull request. For more information and/or questions please refer to the [How To Contribute guide](http://flink.apache.org/how-to-contribute.html).
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- [ ] General
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You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gyfora/flink FLINK-4441
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/2399.patch
To close this pull request, make a commit to your master/trunk branch
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This closes #2399
----
commit d984fcf0df5a2ee5ca020d5beaec5697c437e09e
Author: Gyula Fora <gy...@apache.org>
Date: 2016-08-21T20:01:16Z
[FLINK-4441] Make RocksDB backend return null on empty state
----
> RocksDB statebackend makes all operators appear stateful
> --------------------------------------------------------
>
> Key: FLINK-4441
> URL: https://issues.apache.org/jira/browse/FLINK-4441
> Project: Flink
> Issue Type: Bug
> Components: State Backends, Checkpointing, Streaming
> Affects Versions: 1.1.1
> Reporter: Gyula Fora
> Assignee: Gyula Fora
> Priority: Blocker
>
> When the state is empty the rocks db state backend returns an empty hashmap instead of a null in the snapshotPartitionedState method.
> This means that these operators always appear stateful to the flink runtime which makes it impossible for instance to remove a stateless operator using the savepoints.
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