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https://issues.apache.org/jira/browse/MAPREDUCE-6807?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ajith S reassigned MAPREDUCE-6807:
----------------------------------
Assignee: Ajith S
> mapred pipes usage is non-standard and redundant
> ------------------------------------------------
>
> Key: MAPREDUCE-6807
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6807
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: client, mrv1
> Affects Versions: 2.6.0
> Reporter: Grant Sohn
> Assignee: Ajith S
> Priority: Trivial
>
> Running "mapred pipes" returns:
> {noformat}
> bin/hadoop pipes
> [-input <path>] // Input directory
> [-output <path>] // Output directory
> [-jar <jar file> // jar filename
> [-inputformat <class>] // InputFormat class
> [-map <class>] // Java Map class
> [-partitioner <class>] // Java Partitioner
> [-reduce <class>] // Java Reduce class
> [-writer <class>] // Java RecordWriter
> [-program <executable>] // executable URI
> [-reduces <num>] // number of reduces
> [-lazyOutput <true/false>] // createOutputLazily
> {noformat}
> No Hadoop CLI uses // comments in the help. Most of them follow the
> pattern similar to UNIX/Linux man page styling:
> {noformat}
> usage: CMD OPTIONS
> OPTIONS/SUBCMD-BLOCK
> OPTION/SUBCMD-DEFINITION-BLOCK
> {noformat}
> It should be look like this since the comments are really redundant:
> {noformat}
> usage: bin/mapred pipes
> [-input <path>]
> [-output <path>]
> [-jar <jar file>]
> [-inputformat <class>]
> [-map <class>]
> [-partitioner <class>]
> [-reduce <class>]
> [-writer <class>]
> [-program <executable URI>]
> [-reduces <num>]
> [-lazyOutput <true/false>]
> {noformat}
> then the parameters can be expanded upon in the section below.
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