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https://issues.apache.org/jira/browse/MAPREDUCE-1242?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Harsh J Chouraria updated MAPREDUCE-1242:
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Fix Version/s: 0.22.0
Affects Version/s: 0.20.2
Release Note: Fix a misleading exception message in case the Chained
Mappers have mismatch in input/output Key/Value pairs between them.
Status: Patch Available (was: Open)
Patch available that fixes this minor docs issue.
> Chain APIs error misleading
> ---------------------------
>
> Key: MAPREDUCE-1242
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1242
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 0.20.2
> Reporter: Amogh Vasekar
> Assignee: Harsh J Chouraria
> Priority: Trivial
> Fix For: 0.22.0
>
> Attachments: MAPREDUCE-1242.patch, MAPREDUCE-1242.r2.patch
>
>
> Hi,
> I was using the Chain[Mapper/Reducer] APIs , and in Class Chain line 207 the
> error thrown :
> "The Mapper output key class does not match the previous Mapper input key
> class"
> Shouldn't this be "The Mapper *input* key class does not match the previous
> Mapper *Output* key class" ? Sort of misleads :)
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