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https://issues.apache.org/jira/browse/FLINK-6364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15998057#comment-15998057
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ASF GitHub Bot commented on FLINK-6364:
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Github user shixiaogang commented on the issue:
https://github.com/apache/flink/pull/3801
Hi @StefanRRichter Thanks a lot for you pointing out the problem the
suggestion for the fix. I have updated the PR as suggested. A
`CloseableRegistry` is used to track opened i/o streams now. And the opened i/o
streams are closed first in the cancellation.
> Implement incremental checkpointing in RocksDBStateBackend
> ----------------------------------------------------------
>
> Key: FLINK-6364
> URL: https://issues.apache.org/jira/browse/FLINK-6364
> Project: Flink
> Issue Type: Sub-task
> Components: State Backends, Checkpointing
> Reporter: Xiaogang Shi
> Assignee: Xiaogang Shi
>
> {{RocksDBStateBackend}} is well suited for incremental checkpointing because
> RocksDB is base on LSM trees, which record updates in new sst files and all
> sst files are immutable. By only materializing those new sst files, we can
> significantly improve the performance of checkpointing.
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