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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9203) Secondary index support through coprocessors
Date Wed, 14 Aug 2013 17:09:50 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13739889#comment-13739889
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ramkrishna.s.vasudevan commented on HBASE-9203:
-----------------------------------------------

When there are more than one index we would definitely have some hit on the write through
put but how much matters.  
Given the readings we can definitely improve on that.  Cross region transaction, supporting
WAlEdits for different regions in a single Edit are some areas that would improve the write
performance.
                
> Secondary index support through coprocessors
> --------------------------------------------
>
>                 Key: HBASE-9203
>                 URL: https://issues.apache.org/jira/browse/HBASE-9203
>             Project: HBase
>          Issue Type: New Feature
>    Affects Versions: 0.98.0
>            Reporter: rajeshbabu
>            Assignee: rajeshbabu
>
> We have been working on implementing secondary index in HBase and open sourced  on hbase
0.94.8 version.
> The project is available on github.
> https://github.com/Huawei-Hadoop/hindex
> This Jira is to support secondary index on trunk(0.98).
> Following features will be supported.
> -          multiple indexes on table,
> -          multi column index,
> -          index based on part of a column value,
> -          equals and range condition scans using index, and
> -          bulk loading data to indexed table (Indexing done with bulk load)
> Most of the kernel changes needed for secondary index is available in trunk. Very minimal
changes needed for it.

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