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From "chunhui shen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9606) Apply small scan to meta scan where rowLimit is low
Date Sat, 21 Sep 2013 12:43:52 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9606?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13773805#comment-13773805
] 

chunhui shen commented on HBASE-9606:
-------------------------------------

Thing is good for meta scan.

One comment:
Using the config of HBASE_META_SCANNER_CACHING may be better than hard coded threshold for
judging small scan. 
e.g. 
{code}
if(rowUpperLimit <= configuration.getInt(HConstants.HBASE_META_SCANNER_CACHING,
         HConstants.DEFAULT_HBASE_META_SCANNER_CACHING))
  scan.setSmall(true);
{code}




                
> Apply small scan to meta scan where rowLimit is low
> ---------------------------------------------------
>
>                 Key: HBASE-9606
>                 URL: https://issues.apache.org/jira/browse/HBASE-9606
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>         Attachments: small-v3.txt
>
>
> HBASE-9488 added the feature for small scan where RPC calls are reduced.
> We can apply small scan to MetaScanner#metaScan() where rowLimit is low.

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