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From "Eran Kutner (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-4612) Allow ColumnPrefixFilter to support multiple prefixes
Date Sun, 23 Oct 2011 07:09:32 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4612?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Eran Kutner updated HBASE-4612:

    Attachment: HBASE-4612.patch
> Allow ColumnPrefixFilter to support multiple prefixes
> -----------------------------------------------------
>                 Key: HBASE-4612
>                 URL: https://issues.apache.org/jira/browse/HBASE-4612
>             Project: HBase
>          Issue Type: Improvement
>          Components: filters
>    Affects Versions: 0.90.4
>            Reporter: Eran Kutner
>            Assignee: Eran Kutner
>            Priority: Minor
>             Fix For: 0.94.0
>         Attachments: HBASE-4612-0.90.patch, HBASE-4612.patch
> When having a lot of columns grouped by name I've found that it would be very useful
to be able to scan them using multiple prefixes, allowing to fetch specific groups in one
scan, without fetching the entire row. This is impossible to achieve using a FilterList, so
I've added such support to the existing ColmnPrefixFilter while keeping backward compatibility.
> The attached patch is based on 0.90.4, I noticed that the 0.92 branch has a new method
to support instantiating filters using Thrift. I'm not sure how the serialization works there
so I didn't implement that, but the rest of my code should work in 0.92 as well.

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