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From "ryan rawson (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-2914) Profiling indicates that ThriftUtilities.rowResultFromHBase is quite inefficient
Date Fri, 13 Aug 2010 19:02:16 GMT
Profiling indicates that ThriftUtilities.rowResultFromHBase is quite inefficient
--------------------------------------------------------------------------------

                 Key: HBASE-2914
                 URL: https://issues.apache.org/jira/browse/HBASE-2914
             Project: HBase
          Issue Type: Bug
    Affects Versions: 0.89.20100621, 0.20.6
            Reporter: ryan rawson
             Fix For: 0.90.0
         Attachments: HBASE-2914.patch

Profiling of ThriftServer here at SU has indicated that the call ThriftUtilities.rowResultFromHBase()
is quite inefficient.  It first calls Result.getRowResult() which is inefficient and slow.
Instead by reimplementing to create the TRowResult (the thrift return type) straight from
the KeyValue[] array the performance boost is substantial, reducing time serializing the results.
 In my profiling the time spent in scannerGetList() went from 1100ms to 108ms on similar test
runs.  

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