Reduce number of getFileStatus call made from every task(TaskDistributedCache) setup
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Key: MAPREDUCE-2011
URL: https://issues.apache.org/jira/browse/MAPREDUCE-2011
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: distributed-cache
Reporter: Koji Noguchi
On our cluster, we had jobs with 20 dist cache and very short-lived tasks resulting in 500
map tasks launched per second resulting in 10,000 getFileStatus calls to the namenode. Namenode
can handle this but asking to see if we can reduce this somehow.
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