Mapper fail rate increases significantly as the number of reduces increase
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Key: HADOOP-1173
URL: https://issues.apache.org/jira/browse/HADOOP-1173
Project: Hadoop
Issue Type: Bug
Reporter: Runping Qi
I ran a large sort job, with about 8400 mappers.
In the first run, I used 301 reducers. About 600 mapper tasks failed.
In another run, I used 607 reducers. More than 3800 mapper tasks failed.
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