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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-2496) Less ArrayList churn on the scan path
Date Wed, 28 Apr 2010 00:42:33 GMT
Less ArrayList churn on the scan path

                 Key: HBASE-2496
                 URL: https://issues.apache.org/jira/browse/HBASE-2496
             Project: Hadoop HBase
          Issue Type: Improvement
    Affects Versions: 0.20.3
            Reporter: Jean-Daniel Cryans
            Assignee: Jean-Daniel Cryans
             Fix For: 0.20.5, 0.21.0

Doing some profiling when testing the scanning speed of 0.20.4, I saw that we are spending
a lot of time instantiating ArrayLists when scanning and that we could sometime set the right
size of the arrays. I don't expect big improvements for short scans, but people like us who
are scanning in batches of 10k could get some nice speedups.

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