ReduceTask should not sleep for 200 ms while waiting for merge to finish
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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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