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https://issues.apache.org/jira/browse/FLINK-2010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14647724#comment-14647724
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Gyula Fora commented on FLINK-2010:
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I believe this is now covered by the different checkpointing tests
> Add test that verifies that chained tasks are properly checkpointed
> -------------------------------------------------------------------
>
> Key: FLINK-2010
> URL: https://issues.apache.org/jira/browse/FLINK-2010
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Reporter: Stephan Ewen
>
> Because this is critical logic, we should have a unit test for the
> {{StreamingTask}} validating that the state from all chained tasks is taken
> into account.
> It needs to check
> - The "trigger checkpoint" method, and that the state handle handle in the
> checkpoint acknowledgement contains all the necessary state
> - The "restore state" method, that state is reset properly
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