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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6711) Avoid local results copy in StoreScanner
Date Sun, 02 Sep 2012 05:40:07 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6711?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13446882#comment-13446882
] 

Lars Hofhansl commented on HBASE-6711:
--------------------------------------

Looks like HadoopQA is toast:
{quote}
At revision 1379915.
HBASE-6711 patch is being downloaded at Sun Sep  2 05:01:45 UTC 2012 from
http://issues.apache.org/jira/secure/attachment/12543466/6711-0.96-v1.txt
cp: cannot stat `/home/jenkins/buildSupport/lib/*': No such file or directory
{quote}

                
> Avoid local results copy in StoreScanner
> ----------------------------------------
>
>                 Key: HBASE-6711
>                 URL: https://issues.apache.org/jira/browse/HBASE-6711
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>            Priority: Minor
>             Fix For: 0.96.0, 0.94.2
>
>         Attachments: 6711-0.96-v1.txt
>
>
> In StoreScanner the number of results is limited to avoid OOMs.
> However, this is done by first adding the KV into a local ArrayList and then copying
the entries in this list to the final result list.
> In turns out the this temporary list is only used to keep track of the size of the result
set in this loop. Can use a simple int instead.

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