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From "cailiuyang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-11138) RocksDB's wal seems to be useless in rocksdb-state-backend that reduce the disk's overhead
Date Thu, 13 Dec 2018 09:45:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-11138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16719986#comment-16719986
] 

cailiuyang commented on FLINK-11138:
------------------------------------

i see it, thanks very much

> RocksDB's wal seems to be useless in rocksdb-state-backend that reduce the disk's overhead
> ------------------------------------------------------------------------------------------
>
>                 Key: FLINK-11138
>                 URL: https://issues.apache.org/jira/browse/FLINK-11138
>             Project: Flink
>          Issue Type: Improvement
>            Reporter: cailiuyang
>            Priority: Major
>
> The wal of rocksdb is used to recovery after crash, but after flink-job crash, it always
recovery from last checkpoint, so it seems wal is useless.
> Am i right?



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