Reducers stuck in shuffle
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Key: HADOOP-2639
URL: https://issues.apache.org/jira/browse/HADOOP-2639
Project: Hadoop
Issue Type: Bug
Reporter: Amareshwari Sri Ramadasu
Priority: Critical
Fix For: 0.16.0
I started sort benchmark on 500 nodes. It has 40000 maps and 900 reducers.
There are 11 reducers stuck in shuffle with 33% progress. I could see a node
down which ran 80 maps on it. And all these reducers are trying to fetch map
output from that node.
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