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https://issues.apache.org/jira/browse/FLINK-4556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15506795#comment-15506795
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ASF GitHub Bot commented on FLINK-4556:
---------------------------------------
GitHub user StefanRRichter opened a pull request:
https://github.com/apache/flink/pull/2523
[FLINK-4556] Make Queryable State Key-Group Aware
This PR addresses [FLINK-4556] and makes queryable state aware of
key-groups.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/StefanRRichter/flink key-group-queryable-state
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/2523.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 #2523
----
commit aeb2033383418fe7015b28a71f6ef6c74039acb2
Author: Stefan Richter <[email protected]>
Date: 2016-09-20T14:36:16Z
[FLINK-4556] Make Queryable State Key-Group Aware
----
> Make Queryable State Key-Group Aware
> ------------------------------------
>
> Key: FLINK-4556
> URL: https://issues.apache.org/jira/browse/FLINK-4556
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Affects Versions: 1.2.0
> Reporter: Aljoscha Krettek
> Assignee: Stefan Richter
> Priority: Blocker
>
> The recent introduction of key-grouped state breaks queryable state because
> the JobManager does not yet forward the client to the correct TaskManager
> based on key-group ranges.
> This will either have to be implemented on the JobManager side, i.e. in
> {{AkkaKvStateLocationLookupService}} or on the {{TaskManager}} when state is
> registered. The JobManager can know the mapping because it should know the
> {{parallelism}}/{{maxParallelism}} which it can use to determine where the
> state for a key-group is stored. The {{TaskManager}} send a
> {{NotifyKvStateRegistered}} message that already contains a {{keyGroupIndex}}
> field that is not useful/correct at the moment, though.
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