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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11841) [0.98] Option for disabling location prefetch
Date Thu, 28 Aug 2014 04:53:57 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11841?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14113338#comment-14113338

Hadoop QA commented on HBASE-11841:

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  against trunk revision .
  ATTACHMENT ID: 12664822

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 4 new or modified

    {color:red}-1 patch{color}.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/10616//console

This message is automatically generated.

> [0.98] Option for disabling location prefetch
> ---------------------------------------------
>                 Key: HBASE-11841
>                 URL: https://issues.apache.org/jira/browse/HBASE-11841
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Minor
>             Fix For: 0.98.7
>         Attachments: HBASE-11841-0.98.patch
> On HBASE-10018 we removed location prefetch in versions > 0.98. That issue enumerates
some of the issues with location prefetch. It is already possible to disable location prefetch
on a per table basis via HTable#setRegionCachePrefetch(TableName tableName, boolean enable)
but we should have a site configuration option that disables prefetch globally without requiring
application code take some special action like setRegionCachePrefetch.

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