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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-74) [performance] When a get or scan request spans multiple columns, execute the reads in parallel
Date Mon, 07 Feb 2011 17:25:57 GMT

    [ https://issues.apache.org/jira/browse/HBASE-74?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12991485#comment-12991485
] 

stack commented on HBASE-74:
----------------------------

@Lars Don't we do for (family: families) get/scan business now?   I was thinking if families
> 1, then we'd run the get/scan business each in its own thread.  When all threads were
done we'd have to aggregate the result before return?

> [performance] When a get or scan request spans multiple columns, execute the reads in
parallel
> ----------------------------------------------------------------------------------------------
>
>                 Key: HBASE-74
>                 URL: https://issues.apache.org/jira/browse/HBASE-74
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: Jim Kellerman
>            Priority: Critical
>             Fix For: 0.92.0
>
>
> When a get or scan request spans multiple columns, execute the reads in parallel and
use a CountDownLatch to wait for them to complete before returning the results.

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