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From "Eric Newton (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-2866) Default WAL size should be based on HDFS Block Size
Date Fri, 06 Jun 2014 17:26:03 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-2866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14020088#comment-14020088
] 

Eric Newton commented on ACCUMULO-2866:
---------------------------------------

I'm just trying to understand what would be better than what we do now.

Presently accumulo sets the WAL block size to be slightly larger than the max size of the
WAL (defaulting to 1G).


> Default WAL size should be based on HDFS Block Size
> ---------------------------------------------------
>
>                 Key: ACCUMULO-2866
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2866
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: tserver
>            Reporter: Mike Drob
>            Priority: Minor
>              Labels: wal
>             Fix For: 1.7.0
>
>
> HBase automatically defaults their WAL size to 0.95 * HDFS block size. This makes a lot
of sense from a resource management perspective, and we should do the same.



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