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From "Jimmy Xiang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7519) Support level compaction
Date Wed, 09 Jan 2013 20:10:14 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7519?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13548940#comment-13548940
] 

Jimmy Xiang commented on HBASE-7519:
------------------------------------

[~sershe], you are right.  As I mentioned in the RB for HBASE-7516, it's not just a file selection
issue. We also need to consider how to generate the new file(s).  We do need some refactory,
which can be done in HBASE-7516, so that other compaction algorithm including file selection
is pluggable.
                
> Support level compaction
> ------------------------
>
>                 Key: HBASE-7519
>                 URL: https://issues.apache.org/jira/browse/HBASE-7519
>             Project: HBase
>          Issue Type: New Feature
>          Components: Compaction
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>         Attachments: level-compaction.pdf
>
>
> The level compaction algorithm may help HBase for some use cases, for example, read heavy
loads (especially, just one version is used), relative small key space updated frequently.

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