Aljoscha Krettek created FLINK-3740:
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Summary: 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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