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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-5585) FileSystem statistic counters are too high when JVM reuse is enabled.
Date Thu, 26 Mar 2009 23:36:50 GMT
FileSystem statistic counters are too high when JVM reuse is enabled.
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                 Key: HADOOP-5585
                 URL: https://issues.apache.org/jira/browse/HADOOP-5585
             Project: Hadoop Core
          Issue Type: Bug
          Components: mapred
            Reporter: Owen O'Malley
            Assignee: Owen O'Malley
            Priority: Blocker
             Fix For: 0.20.0


When JVM reuse is enabled, the FileSystem.Statistics are not cleared between tasks. That means
that the second task gets credit for its own reads and writes as well as the first. The third
gets credit for all 3 tasks reads and writes.

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