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https://issues.apache.org/jira/browse/FLINK-8699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16427022#comment-16427022
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ASF GitHub Bot commented on FLINK-8699:
---------------------------------------
Github user sihuazhou commented on the issue:
https://github.com/apache/flink/pull/5705
Hi, @StefanRRichter thanks a lot.
> Fix concurrency problem in rocksdb full checkpoint
> --------------------------------------------------
>
> Key: FLINK-8699
> URL: https://issues.apache.org/jira/browse/FLINK-8699
> Project: Flink
> Issue Type: Bug
> Components: State Backends, Checkpointing
> Affects Versions: 1.5.0
> Reporter: Sihua Zhou
> Assignee: Sihua Zhou
> Priority: Blocker
> Fix For: 1.5.0
>
>
> In full checkpoint, `kvStateInformation` is not a copied object and it can be
> changed when writeKVStateMetaData() is invoking ... This can lead to
> problematic, which is serious.
> {code}
> private void writeKVStateMetaData() throws IOException {
> // ...
> for (Map.Entry<String, Tuple2<ColumnFamilyHandle,
> RegisteredKeyedBackendStateMetaInfo<?, ?>>> column :
> stateBackend.kvStateInformation.entrySet()) {
> }
> //...
> }
> {code}
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