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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3326) ReduceTask should not sleep for 200 ms while waiting for merge to finish
Date Tue, 29 Apr 2008 20:02:55 GMT
ReduceTask should not sleep for 200 ms while waiting for merge to finish
------------------------------------------------------------------------

                 Key: HADOOP-3326
                 URL: https://issues.apache.org/jira/browse/HADOOP-3326
             Project: Hadoop Core
          Issue Type: Bug
          Components: mapred
            Reporter: Owen O'Malley


Currently the merge code in Reduce task does:

{code}
            // Wait for the on-disk merge to complete
            while (localFSMergeInProgress) {
              Thread.sleep(200);
            }
            
            //wait for an ongoing merge (if it is in flight) to complete
            while (mergeInProgress) {
              Thread.sleep(200);
            }
{code}

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