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From "HBase Review Board (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2988) Support alternate compression for major compactions
Date Wed, 15 Sep 2010 00:30:32 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12909537#action_12909537
] 

HBase Review Board commented on HBASE-2988:
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Message from: "Andrew Purtell" <apurtell@apache.org>

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This is an automatically generated e-mail. To reply, visit:
http://review.cloudera.org/r/821/
-----------------------------------------------------------

(Updated 2010-09-14 17:22:18.235446)


Review request for hbase.


Changes
-------

getCompactionCompression falls back to getCompression if COMPRESSION_COMPACT is unset


Summary
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Support alternate compression for major compactions.

This is expected to be an uncommmon configuration so I did not pollute the HColumnDescriptor
constructor with the new option; instead only added convenience {get,set}ters.


This addresses bug HBASE-2988.
    http://issues.apache.org/jira/browse/HBASE-2988


Diffs (updated)
-----

  src/main/java/org/apache/hadoop/hbase/HColumnDescriptor.java 8e3bd53 
  src/main/java/org/apache/hadoop/hbase/regionserver/Store.java 4f777f0 
  src/main/ruby/hbase/admin.rb 82d7e54 

Diff: http://review.cloudera.org/r/821/diff


Testing
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Created table with LZO compression, inserted 10GB of data, altered schema with COMPRESSION_COMPACT
of 'LZMA' (custom LZMA Hadoop compression plugin), initiated major compaction, confirmed the
results by examining HFiles on local fs with the UNIX file utility.


Thanks,

Andrew




> Support alternate compression for major compactions
> ---------------------------------------------------
>
>                 Key: HBASE-2988
>                 URL: https://issues.apache.org/jira/browse/HBASE-2988
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Minor
>         Attachments: HBASE-2988-0.20.patch, HBASE-2988-trunk.patch
>
>
> Support an alternate compression scheme on HFiles during major compaction.
> See discussion on HBASE-2987 for background.

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