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https://issues.apache.org/jira/browse/HADOOP-9300?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sandy Ryza updated HADOOP-9300:
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Status: Patch Available (was: Open)
> Streaming fails to set output key class when reducer is java class
> ------------------------------------------------------------------
>
> Key: HADOOP-9300
> URL: https://issues.apache.org/jira/browse/HADOOP-9300
> Project: Hadoop Common
> Issue Type: Bug
> Components: tools
> Affects Versions: 2.0.2-alpha
> Reporter: Sandy Ryza
> Assignee: Sandy Ryza
> Attachments: HADOOP-9300.patch
>
>
> In an effort to avoid overwriting user configs (MAPREDUCE-1888), StreamJob
> doesn't 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.
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