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From "Phabricator (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4542) add filter info to slow query logging
Date Tue, 31 Jan 2012 21:22:31 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13197282#comment-13197282
] 

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

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

  @zhiqiu: thanks for fixing the title. Also, can you add your original 89-fb diff URL in
this diff's description and set the JIRA state to "Patch Available"? This is done using the
"Submit Patch" button on the JIRA page (https://issues.apache.org/jira/browse/HBASE-4542).
There seem to be temporary issues with the Apache JIRA website at the moment but they will
probably be resolved in an hour or two.

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

                
> add filter info to slow query logging
> -------------------------------------
>
>                 Key: HBASE-4542
>                 URL: https://issues.apache.org/jira/browse/HBASE-4542
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Kannan Muthukkaruppan
>            Assignee: Madhuwanti Vaidya
>         Attachments: 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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