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https://issues.apache.org/jira/browse/MAPREDUCE-5113?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sandy Ryza updated MAPREDUCE-5113:
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Description:
After MAPREDUCE-1888, with a java mapper or reducer, StreamJob doesn't respect
stream.map.output/stream.reduce.output when setting a job's output key/value
classes, even if these configs are explicitly set by the user.
As MAPREDUCE-1888 is not in branch-1, this change is only needed in hadoop 2.
was:
After MAPREDUCE-1888, with a java mapper or reducer, StreamJob doesn't respect
stream.map.output/stream.reduce.output to set a job's output key/value classes.
unless they are specified in the streaming command line. If the configs aren't
specified in either of these places, the streaming defaults (Text) no longer
kick in, and the global default LongWritable is used.
This can cause jobs/output writers that are expecting Text to fail.
> Streaming input/output types are ignored with java mapper/reducer
> -----------------------------------------------------------------
>
> Key: MAPREDUCE-5113
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5113
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 2.0.2-alpha
> Reporter: Sandy Ryza
> Assignee: Sandy Ryza
> Attachments: HADOOP-9300-1.patch, HADOOP-9300-2.patch,
> HADOOP-9300-2.patch, HADOOP-9300-2.patch, HADOOP-9300-3.patch,
> HADOOP-9300.patch, HADOOP-9300.patch, MAPREDUCE-5113.patch
>
>
> After MAPREDUCE-1888, with a java mapper or reducer, StreamJob doesn't
> respect stream.map.output/stream.reduce.output when setting a job's output
> key/value classes, even if these configs are explicitly set by the user.
> As MAPREDUCE-1888 is not in branch-1, this change is only needed in hadoop 2.
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