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https://issues.apache.org/jira/browse/FLINK-8777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16379995#comment-16379995
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ASF GitHub Bot commented on FLINK-8777:
---------------------------------------
Github user sihuazhou commented on a diff in the pull request:
https://github.com/apache/flink/pull/5578#discussion_r171178975
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/state/TaskLocalStateStoreImpl.java
---
@@ -300,6 +295,34 @@ private void deleteDirectory(File directory) throws
IOException {
}
}
+ /**
+ * Pruning the useless checkpoints, it should be called only when
holding the {@link #lock}.
+ */
+ private void pruneCheckpoints(Predicate<Long> pruningChecker, boolean
breakOnceCheckerFalse) {
--- End diff --
👍 I prefer to use `LongPredicate`, addressing ...
> improve resource release when recovery from failover
> ----------------------------------------------------
>
> Key: FLINK-8777
> URL: https://issues.apache.org/jira/browse/FLINK-8777
> Project: Flink
> Issue Type: Improvement
> Components: State Backends, Checkpointing
> Affects Versions: 1.5.0
> Reporter: Sihua Zhou
> Assignee: Sihua Zhou
> Priority: Major
> Fix For: 1.5.0
>
>
> When recovery from failed, {{TaskLocalStateStoreImpl.retrieveLocalState()}}
> will be invoked, we can release all entry from
> {{storedTaskStateByCheckpointID}} that does not satisfy {{entry.checkpointID
> == checkpointID}}, this can prevent the resource leak when job loop in
> {{local checkpoint completed => failed => local checkpoint completed =>
> failed ...}}.
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