shuffling backoff 5 minutes despite the whole cluster is idle
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Key: HADOOP-4011
URL: https://issues.apache.org/jira/browse/HADOOP-4011
Project: Hadoop Core
Issue Type: Bug
Components: mapred
Reporter: Runping Qi
A reducer of a mapred job got a read time out exception during fetching the
last map output segment.
The reducer waited 5 minutes before re-fetch the map output, even though the
whole cluster was idle during that period.
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