Push extra jars to distributed cache and use the classloader enxtension
mechanism in PigContext to load them on the backend
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Key: PIG-2318
URL: https://issues.apache.org/jira/browse/PIG-2318
Project: Pig
Issue Type: Improvement
Components: impl
Reporter: Julien Le Dem
Assignee: Julien Le Dem
This is related to PIG-2010 with a slightly different approach
https://issues.apache.org/jira/browse/PIG-2010
Currently Pig bundles up all dependencies in a single jar which is a lot of
overhead when there are a lot of dependencies and short lived jobs. This patch
instead pushes the dependencies to distributed cache and uses the PigContext
classloading mechanism to make the UDFs available.
Possible improvements: push jars to HDFS/distributed cache only once per
script. have a cache on HDFS to avoid repeatedly pushing jars to HDFS.
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