DistributedCache for M-R chains
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Key: MAPREDUCE-2583
URL: https://issues.apache.org/jira/browse/MAPREDUCE-2583
Project: Hadoop Map/Reduce
Issue Type: New Feature
Reporter: Mitch McCuiston
Currently the DistributedCache appears to be created at the granularity of a
job. In the case of a M-R chain, it is sometimes useful to share information
out-of-band (as small files in hdfs) with each task in the chain. For
instance, the first M-R phase within a two-phase M-R chain might produce useful
statistics that could be used to configure the second phase.
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