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https://issues.apache.org/jira/browse/FLINK-35784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17864188#comment-17864188
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Zakelly Lan commented on FLINK-35784:
-------------------------------------
Merged into master via: 3d79387604818a3f6dbf05c09642d651f8feabda
1.20 via: 2b3daac5c8dc74f27e113bdeeb7cb74f1fb3c5bc
> The cp file-merging directory not properly registered in SharedStateRegistry
> ----------------------------------------------------------------------------
>
> Key: FLINK-35784
> URL: https://issues.apache.org/jira/browse/FLINK-35784
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Checkpointing
> Affects Versions: 1.20.0
> Reporter: Zakelly Lan
> Assignee: Zakelly Lan
> Priority: Blocker
> Labels: pull-request-available
>
> The {{OperatorSubtaskState}} only make keyed state register with
> {{SharedStateRegistry}}. However, the file-merging directories's handle are
> wrapped in {{FileMergingOperatorStreamStateHandle}}, which is an
> {{OperatorStreamStateHandle}}. That means the {{#registerSharedStates}} is
> never called, so the registry will never delete the directories.
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