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https://issues.apache.org/jira/browse/FLINK-2916?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gyula Fora resolved FLINK-2916.
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Resolution: Fixed
https://github.com/gyfora/flink/commit/ad6f826584be7527c58e2126e2828f82afc97875
> Add more context information for the StateBackend
> -------------------------------------------------
>
> Key: FLINK-2916
> URL: https://issues.apache.org/jira/browse/FLINK-2916
> Project: Flink
> Issue Type: Improvement
> Components: Streaming
> Reporter: Gyula Fora
> Assignee: Gyula Fora
> Priority: Minor
>
> The StateBackend currently only receives a very limited information about the
> context in which it was initialized (only the JobID).
> For more elaborate state backends (for instance db backends) it becomes
> necessary to have more information about the running job to allow more
> fine-grained handling or sharding of the stored state.
> Changes:
> - The initalizeForJob method should receive the Environment of the task from
> which it was called instead of just the jobId. This allows getting
> information about parallelism and subtask index for instance.
> - The createKvState method should additionally receive the unique id of the
> operator in the jobgraph along with the name of the created state name (jobid
> + operatorId + statename creates a unique identifier for the kvState)
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