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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-9935) Slight perf improvement: Avoid KeyValue at some places
Date Sat, 09 Nov 2013 07:52:17 GMT
Lars Hofhansl created HBASE-9935:
------------------------------------

             Summary: Slight perf improvement: Avoid KeyValue at some places
                 Key: HBASE-9935
                 URL: https://issues.apache.org/jira/browse/HBASE-9935
             Project: HBase
          Issue Type: Bug
            Reporter: Lars Hofhansl


Here's an example:
{code}
KeyValue.createLastOnRow(
          kv.getBuffer(), kv.getRowOffset(), kv.getRowLength(),
          kv.getBuffer(), kv.getFamilyOffset(), kv.getFamilyLength(),
           kv.getBuffer(), kv.getQualifierOffset(), kv.getQualifierLength());
{code}

Looks harmless enough, but that actually recalculates the rowlength 5 times. And each time
it needs to decode the rowlength again from the bytes of the KV.



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