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https://issues.apache.org/jira/browse/FLINK-3740?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aljoscha Krettek resolved FLINK-3740.
-------------------------------------
Resolution: Fixed
Fixed in
https://github.com/apache/flink/commit/f2f5bd5bed2f737b8418be09359691e899462184
> Session Window State is Not Checkpointed
> ----------------------------------------
>
> Key: FLINK-3740
> URL: https://issues.apache.org/jira/browse/FLINK-3740
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Reporter: Aljoscha Krettek
> Assignee: Aljoscha Krettek
>
> The merging window state in the {{WindowOperator}} is not checkpointed. This
> means that programs containing session windows will fail upon restore after a
> failure.
> I propose adding a simulated snapshot/restore cycle to the tests in
> {{WindowOperatorTest}} to catch these problems in the future.
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