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https://issues.apache.org/jira/browse/HADOOP-878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12475443
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Arun C Murthy commented on HADOOP-878:
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Looks like it was TestCheckPoint which failed, which obviously this patch
doesn't affect... could we ignore the -1?
> reducer NONE does not work with multiple maps
> ---------------------------------------------
>
> Key: HADOOP-878
> URL: https://issues.apache.org/jira/browse/HADOOP-878
> Project: Hadoop
> Issue Type: Bug
> Components: contrib/streaming
> Reporter: Mahadev konar
> Assigned To: Arun C Murthy
> Priority: Minor
> Attachments: HADOOP-878_20070220_1.patch, HADOOP-878_20070222_2.patch
>
>
> If you execute more than one maps with -reducer None output data seems to get
> lost. The number of lines output with identity reducer is greater than the
> number of lines output using reducer NONE.
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