Make Pig work with multiple versions of Hadoop
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Key: PIG-924
URL: https://issues.apache.org/jira/browse/PIG-924
Project: Pig
Issue Type: Bug
Reporter: Dmitriy V. Ryaboy
The current Pig build scripts package hadoop and other dependencies into the
pig.jar file.
This means that if users upgrade Hadoop, they also need to upgrade Pig.
Pig has relatively few dependencies on Hadoop interfaces that changed between
18, 19, and 20. It is possibly to write a dynamic shim that allows Pig to use
the correct calls for any of the above versions of Hadoop. Unfortunately, the
building process precludes us from the ability to do this at runtime, and
forces an unnecessary Pig rebuild even if dynamic shims are created.
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