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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9203) Secondary index support through coprocessors
Date Fri, 16 Aug 2013 03:53:54 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13741875#comment-13741875
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ramkrishna.s.vasudevan commented on HBASE-9203:
-----------------------------------------------

bq.What potential bug may exist in IndexHalfStoreFileReader ?
Some apis were not implemented.  Those things needs to be revisited.
>>For TestIndexRegionObserver, what does testHDP2938 cover ?
Yes, renaming would be necessary.  Some internal github issue has been raised for the same.

[~lhofhansl]
bq.Even if we add these there would be some other kernel changes, though, right?
Yes there are few more.  In the kernel patch attached check for HRegion, SplitTransaction,
and some client side changes.
                
> 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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