[jira] Commented: (HADOOP-2113) Add "-text" command to FsShell to decode SequenceFile to stdout

["Enis Soztutar (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-2113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12538199 ] 

Enis Soztutar commented on HADOOP-2113:
---------------------------------------

I rather think of implementing a more general set of tools to operate sequence files. Because sequence files are at the heart of mapred operations, making human-interprettable operations should be supported by the framework. The set of operations that I can think of include : 

# find value given key 
# find values with keys matching given regex (dump to text file)
# dump sequence file to text file (using keyClass.toString() and valueClass.toString())
# find pairs in the given key1-key2 range. 
# dump metadata and statistics of the sf, such as number of record, key range, etc. 
# ... suggestions ?



> Add "-text" command to FsShell to decode SequenceFile to stdout
> ---------------------------------------------------------------
>
>                 Key: HADOOP-2113
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2113
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: fs
>            Reporter: Chris Douglas
>            Assignee: Chris Douglas
>            Priority: Minor
>             Fix For: 0.16.0
>
>         Attachments: 2113-0.patch
>
>
> FsShell should provide a command to examine SequenceFiles.

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