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https://issues.apache.org/jira/browse/FLINK-2403?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gyula Fora resolved FLINK-2403.
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Resolution: Done
> Rework partitioned state checkpointing logic
> --------------------------------------------
>
> Key: FLINK-2403
> URL: https://issues.apache.org/jira/browse/FLINK-2403
> Project: Flink
> Issue Type: Improvement
> Components: Streaming
> Affects Versions: 0.10
> Reporter: Gyula Fora
> Assignee: Gyula Fora
>
> In case of partitioned states, states are stored per-key (creating a
> statehandle for each key) so that we can later use this for repartitioning
> without fetching all the states.
> While this mechanism might be desired later it is extremely inefficient if we
> use a state backend such as HDFS as we are creating many small files.
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