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Posted to issues@flink.apache.org by "Steven Zhen Wu (JIRA)" <ji...@apache.org> on 2018/11/21 21:23:00 UTC

[jira] [Created] (FLINK-10969) expose API or metric for total number of keys stored in state backend

Steven Zhen Wu created FLINK-10969:
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             Summary: expose API or metric for total number of keys stored in state backend
                 Key: FLINK-10969
                 URL: https://issues.apache.org/jira/browse/FLINK-10969
             Project: Flink
          Issue Type: New Feature
          Components: State Backends, Checkpointing
            Reporter: Steven Zhen Wu


[~srichter] mentioned it might make sense to provide two versions: exact count and approximate count. For some state backend (likes rocksDB), it may be much cheaper to get approximate count.



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