Tom White created CRUNCH-235:
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Summary: Avoid exposing incompatible Hadoop classes in Crunch API
Key: CRUNCH-235
URL: https://issues.apache.org/jira/browse/CRUNCH-235
Project: Crunch
Issue Type: Improvement
Components: Core
Reporter: Tom White
Assignee: Tom White
Between Hadoop 1 and 2, org.apache.hadoop.mapreduce.Counter changed from a
class to an interface. Therefore, exposing Counter in Crunch's API means that
Crunch programs may need to be recompiled when moving from a Hadoop 1 to a
Hadoop 2 cluster. It would be nice to avoid the need to recompile.
Note that Crunch itself has two artifacts - one for each major version of
Hadoop - and the change proposed here would not alter that, it would just mean
that the same Crunch program binary could be used with either Crunch artifact.
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