Details
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Bug
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Status: In Progress
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Major
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Resolution: Unresolved
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2.0.4-alpha
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None
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None
Description
If a combiner is specified using o.a.h.mapreduce.Job.setCombinerClass - this will silently ignored on the reduce side since the reduce side usage is only aware of the old api combiner.
This doesn't fail the job - since the new combiner key does not deprecate the old key.
Attachments
Attachments
Issue Links
- is blocked by
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MAPREDUCE-5294 Shuffle#MergeManager should support org.apache.hadoop.mapreduce.Reducer
- Resolved
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MAPREDUCE-5295 ShuffleConsumerPlugin.Context should remove unused combiner-related methods and fields
- Resolved
There are no Sub-Tasks for this issue.