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https://issues.apache.org/jira/browse/HADOOP-4027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12626433#action_12626433
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Ramya R commented on HADOOP-4027:
---------------------------------
To be more specific, streaming utility returns zero when input/output/reducer
options are not specified(where a non-zero value is expected). But when mapper
option is not specified, it returns non zero value as expected.
> When streaming utility is run without specifying mapper/reducer/input/output
> options, it returns 0.
> ---------------------------------------------------------------------------------------------------
>
> Key: HADOOP-4027
> URL: https://issues.apache.org/jira/browse/HADOOP-4027
> Project: Hadoop Core
> Issue Type: Bug
> Components: contrib/streaming
> Affects Versions: 0.18.0
> Reporter: Ramya R
> Priority: Minor
> Fix For: 0.19.0
>
>
> When the below command is run i.e without specifying any of the streaming
> options, it returns 0 whereas a user would expect it to return a non-zero
> value:
> $ $HADOOP_HOME/bin/hadoop [--config dir] jar $HADOOP_HOME/hadoop-streaming.jar
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