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

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

  @zhiqiu: don't worry about filling those fields in the "Submit Patch" form. 
We can correct those fields later if necessary. The purpose of setting JIRA 
status to "Patch Available" is to make the Apache Jenkins continuous 
integration server pick up the patch and run a subset of the test suite 
("small" and "Medium" tests) against it.

  In some cases, the format of the patch automatically generated by Phabricator 
and uploaded to JIRA is such that it cannot be applied by the standard patch 
command for some reason. In those cases, Hadoop QA (Jenkins server) will post 
an update to the JIRA saying that it could not apply the patch. If that 
happens, you can generate a patch manually using the following command:

    git format-patch --no-prefix HEAD^..HEAD

  Then, upload this patch to the JIRA 
(https://issues.apache.org/jira/browse/HBASE-4542) using the "+" button at the 
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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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