hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7474) Endpoint Implementation to support Scans with Sorting of Rows based on column values(similar to "order by" clause of RDBMS)
Date Thu, 03 Jan 2013 00:34:12 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13542602#comment-13542602
] 

Ted Yu commented on HBASE-7474:
-------------------------------

@Anil:
Have you looked at HBASE-5982 ?
I think its goal is to handle top N query described above.

For case 2:
bq.  lets assume the 250K rows in region1 and 250k rows in region2
I think the above assumption is not realistic. The rows would spread across 10 regions.
                
> Endpoint Implementation to support Scans with Sorting of Rows based on column values(similar
to "order by" clause of RDBMS)
> ---------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-7474
>                 URL: https://issues.apache.org/jira/browse/HBASE-7474
>             Project: HBase
>          Issue Type: New Feature
>          Components: Coprocessors, Scanners
>    Affects Versions: 0.94.3
>            Reporter: Anil Gupta
>            Priority: Minor
>              Labels: coprocessors, scan, sort
>             Fix For: 0.94.5
>
>         Attachments: SortingEndpoint_high_level_flowchart.pdf
>
>
> Recently, i have developed an Endpoint which can sort the Results(rows) on the basis
of column values. This functionality is similar to "order by" clause of RDBMS. I will be submitting
this Patch for HBase0.94.3
> I am almost done with the initial development and testing of feature. But, i need to
write the JUnits for this. I will also try to make design doc.
> Thanks,
> Anil Gupta
> Software Engineer II, Intuit, inc

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message