Reduce stuck in pending state for ever even though the job tracker shows a lot
of free slots
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Key: HADOOP-4646
URL: https://issues.apache.org/jira/browse/HADOOP-4646
Project: Hadoop Core
Issue Type: Bug
Components: mapred
Affects Versions: 0.17.2
Reporter: Runping Qi
A job with 38 mappers and 38 reducers running on a cluster with 36 slots.
All mapper tasks completed. 17 reducer tasks completed. 11 reducers are still
in the running state
and one is in the oending state and stay there forever.
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