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From "Daniel Einspanjer (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-3887) Add region deletion tool
Date Tue, 13 Sep 2011 14:27:09 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3887?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Daniel Einspanjer updated HBASE-3887:
-------------------------------------

    Attachment: online_delete.rb

This script deletes regions on a live table. The only thing it doesn't currently do is split
regions that are partially within the start / end key range.  I would love it if someone could
take a crack at putting that enhancement in this or writing a separate script to do it.

Tested with a few test clusters in various conditions and then used this script to delete
thousands of old regions from our large production table.

> Add region deletion tool
> ------------------------
>
>                 Key: HBASE-3887
>                 URL: https://issues.apache.org/jira/browse/HBASE-3887
>             Project: HBase
>          Issue Type: New Feature
>          Components: regionserver
>            Reporter: Ophir Cohen
>            Priority: Minor
>         Attachments: online_delete.rb
>
>
> A region deletion tool can be very useful to remove large amount of data.
> For example, it can be used to remove all data older than specific date (assuming your
data sorted by dates) etc...
> This tool should be something as follows:
> Input: region key or (even better!) start & end key.
> 1. Split region to isolate the keys.
> 2. Disable the relevant regions.
> 3. Delete files from the file system.
> 4. Update .META. table.

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