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


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:
>             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

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