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From "Micah Whitacre (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CRUNCH-246) HFileSource
Date Wed, 07 Aug 2013 14:54:48 GMT

    [ https://issues.apache.org/jira/browse/CRUNCH-246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13732071#comment-13732071
] 

Micah Whitacre commented on CRUNCH-246:
---------------------------------------

The mapreduce snapshotting bug in HBase is here[1].

Perhaps I'm incorrectly assuming Chao's use case but I would assume he targeting processing
based on the output of CRUNCH-212 and not necessarily active data in HBase.  Your concerns
seems like they are only relevant if you are trying to hit active HBase data.

[1] - https://issues.apache.org/jira/browse/HBASE-8369
                
> HFileSource
> -----------
>
>                 Key: CRUNCH-246
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-246
>             Project: Crunch
>          Issue Type: Improvement
>          Components: IO
>            Reporter: Chao Shi
>            Assignee: Chao Shi
>
> I found this useful when directly perform MR on HFiles. I used it yesterday when copying
a bunch of HFiles to another cluster (where the region layout is different).
> There is no HFileInputFormat provided by HBase, but I found the following from google:
> https://gist.github.com/leifwickland/1120311
> http://blog.csdn.net/kirayuan/article/details/7794402 (Java version of the above. The
webpage is in chinese, but you can see the code)
> I'm not sure if we copy their code directly (copyright issue?). Anyone knows?

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