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From "Mike Drob (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-2842) Allow for use of hflush instead of hsync
Date Tue, 17 Jun 2014 15:10:12 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-2842?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14033893#comment-14033893
] 

Mike Drob commented on ACCUMULO-2842:
-------------------------------------

What is the relationship between this setting and {{dfs.datanode.synconclose}}? If I set this
to 'hflush' then do I need to worry about the datanode settings, or are they orthogonal?

> Allow for use of hflush instead of hsync
> ----------------------------------------
>
>                 Key: ACCUMULO-2842
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2842
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: logger
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>             Fix For: 1.5.2, 1.6.1, 1.7.0
>
>
> We keep getting onto the discussion on hsync versus hflush performance; however, we lack
a way to actually test this.
> Make the invocation of hflush or hsync configurable. It should not change the default,
so users on existing major releases should not be affected unless they choose to change their
configuration.



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