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https://issues.apache.org/jira/browse/FLINK-8676?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16367693#comment-16367693
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ASF GitHub Bot commented on FLINK-8676:
---------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/flink/pull/5513
> Memory Leak in AbstractKeyedStateBackend.applyToAllKeys() when backend is
> base on RocksDB
> -----------------------------------------------------------------------------------------
>
> Key: FLINK-8676
> URL: https://issues.apache.org/jira/browse/FLINK-8676
> Project: Flink
> Issue Type: Bug
> Components: State Backends, Checkpointing, Streaming
> Affects Versions: 1.5.0
> Reporter: Sihua Zhou
> Assignee: Sihua Zhou
> Priority: Blocker
> Fix For: 1.5.0
>
>
> `AbstractKeyedStateBackend.applyToAllKeys() ` uses backend's
> getKeys(stateName, namespace) to get all keys that belong to `namespace`.
> But, in `RocksDBKeyedStateBackend.getKeys()` if just return a object which
> wrap a `rocksdb iterator`, that is dangous, because rocksdb will ping the
> resources that belong to the iterator into memory untill iterator.close() is
> invoked, but it didn't invoked right now. This will lead to memory leak
> finally.
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