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From "Chao Shi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CRUNCH-246) HFileSource
Date Tue, 13 Aug 2013 16:03:48 GMT

     [ https://issues.apache.org/jira/browse/CRUNCH-246?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chao Shi updated CRUNCH-246:
----------------------------

    Attachment: crunch-246.patch

Thanks Ryan. My first attempt is attached. It only includes thin wrapper HFileSource, based
on Ryan's HFileInputFormat (change the input key from ImmutableBytesWritable to NullWritable,
to fit crunch's PCollection), and it does not support materialization.
                
> 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
>         Attachments: crunch-246.patch, HFileInputFormat.java
>
>
> 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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