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From "Matteo Bertozzi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-7253) Compaction Tool
Date Sat, 01 Dec 2012 22:33:59 GMT

     [ https://issues.apache.org/jira/browse/HBASE-7253?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matteo Bertozzi updated HBASE-7253:
-----------------------------------

    Status: Patch Available  (was: Open)
    
> Compaction Tool
> ---------------
>
>                 Key: HBASE-7253
>                 URL: https://issues.apache.org/jira/browse/HBASE-7253
>             Project: HBase
>          Issue Type: New Feature
>          Components: Compaction
>    Affects Versions: 0.96.0
>            Reporter: Matteo Bertozzi
>            Assignee: Matteo Bertozzi
>            Priority: Minor
>             Fix For: 0.96.0
>
>         Attachments: HBASE-7253-v0.patch
>
>
> In HBASE-5616, as part of the compaction code refactor, a CompactionTool was added.
> but there are some issues:
> * The tool is under test/
> * mockito is required, so the "test" scope should be removed from the pom.xml, otherwise
the tool doesn't start
> * The mock, used by the tool, is mocking HRegion.getRegionInfo() but some code (Store)
uses HRegion.regionInfo directly HStore.java#L2021,  HStore.java#L1389, HStore.java#L1402
and you end up with a NPE in the tool.
> * The Mocked Store uses a dummy family and the compacted files doesn't get the same family
properties specified (compression, encoding, ...)
> * at the end of compaction CompactionTool.java#L155, on by default, the compaction file
is removed (note that the compacted one are already removed inside the store.compact()...
and you end up with an empty dir, if you compact everything.
> I've fixed some stuff and added support to:
>  * Run the compaction as a MR Job
>  * Specify a Table (compact each region/family)
>  * Specify a Region (compact each family)
>  * Specify a Family (as before)

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