rrim created YARN-1881:
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Summary: configuration for performance tuning
Key: YARN-1881
URL: https://issues.apache.org/jira/browse/YARN-1881
Project: Hadoop YARN
Issue Type: Test
Components: nodemanager
Affects Versions: 2.2.0
Reporter: rrim
Hi,
my MR jobs run very slow on hadoop, some block in reduce tasks
-input data is small, number of splits is 2
-memory is available ('free -m' shows a usage under 4GB per node), each node
has 32GB
-yarnchild(s) are consuming 100% CPU (tests with "top")
and I don't find ways to improve performance
best
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