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From "Phabricator (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4542) add filter info to slow query logging
Date Fri, 09 Mar 2012 20:18:58 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13226408#comment-13226408
] 

Phabricator commented on HBASE-4542:
------------------------------------

mbautin has committed the revision "[jira] [HBASE-4542] Add filter info to slow query logging".

REVISION DETAIL
  https://reviews.facebook.net/D1539

COMMIT
  https://reviews.facebook.net/rHBASE1299019

                
> add filter info to slow query logging
> -------------------------------------
>
>                 Key: HBASE-4542
>                 URL: https://issues.apache.org/jira/browse/HBASE-4542
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.89.20100924
>            Reporter: Kannan Muthukkaruppan
>            Assignee: Madhuwanti Vaidya
>         Attachments: 0001-jira-HBASE-4542-Add-filter-info-to-slow-query-loggin.patch,
Add-filter-info-to-slow-query-logging-2012-03-06_14_28_13.patch, D1263.2.patch, D1539.1.patch
>
>
> Slow query log doesn't report filters in effect.
> For example:
> {code}
> (operationTooSlow): \
> {"processingtimems":3468,"client":"10.138.43.206:40035","timeRange": [0,9223372036854775807],\
> "starttimems":1317772005821,"responsesize":42411, \
> "class":"HRegionServer","table":"myTable","families":{"CF1":"ALL"]},\
> "row":"6c3b8efa132f0219b7621ed1e5c8c70b","queuetimems":0,\
> "method":"get","totalColumns":1,"maxVersions":1,"storeLimit":-1}
> {code}
> the above would suggest that all columns of myTable:CF1 are being requested for the given
row. But in reality there could be filters in effect (such as ColumnPrefixFilter, ColumnRangeFilter,
TimestampsFilter() etc.). We should enhance the slow query log to capture & report this
information.

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