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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-3654) Disable Write-Ahead-Log in RocksDB State
Date Wed, 06 Apr 2016 09:36:25 GMT

    [ https://issues.apache.org/jira/browse/FLINK-3654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15228020#comment-15228020
] 

ASF GitHub Bot commented on FLINK-3654:
---------------------------------------

Github user aljoscha commented on the pull request:

    https://github.com/apache/flink/pull/1850#issuecomment-206259647
  
    I think we have a winner now. I changed the backup options to not back up the WAL. This
seems to have been the problem. Only logical since there is no WAL anymore...
    
    Before, 2 out of 5 travis runs (i.e. 5*5) would have errors. Now all 5 runs that I started
were successful.


> Disable Write-Ahead-Log in RocksDB State
> ----------------------------------------
>
>                 Key: FLINK-3654
>                 URL: https://issues.apache.org/jira/browse/FLINK-3654
>             Project: Flink
>          Issue Type: Improvement
>          Components: Streaming
>            Reporter: Aljoscha Krettek
>            Assignee: Aljoscha Krettek
>
> We do our own checkpointing of the RocksDB database so the WAL is useless to us. Disabling
writes to the WAL should give us a very large performance boost.



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