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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-1946) Include dfs.datanode.synconclose in hdfs configuration documentation
Date Mon, 02 Dec 2013 19:38:35 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-1946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13836826#comment-13836826
] 

Josh Elser commented on ACCUMULO-1946:
--------------------------------------

bq.  For 1.7.0 we may want to consider moving away from this fixed size buffer, I will open
a ticket for that.

Sounds good.

bq. I feel comfortable tweaking these defaults for 1.6.0, but I am not sure about 1.5 and
1.4. Changing the defaults in a bug fix release could break an existing system.

Good point.

I'll go ahead and close out this ticket then.

> Include dfs.datanode.synconclose in hdfs configuration documentation
> --------------------------------------------------------------------
>
>                 Key: ACCUMULO-1946
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1946
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: docs
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>             Fix For: 1.5.1, 1.6.0
>
>
> We should be including some writeup about dfs.datanode.synconclose in our documentation
surrounding the HDFS configuration as it better ensures that data is lost in the face of hard
shutdown (power loss) of the datanode process.



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