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https://issues.apache.org/jira/browse/HBASE-7474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13542069#comment-13542069
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Anil Gupta commented on HBASE-7474:
-----------------------------------
[[email protected]]
My implementation is not at all related to HBase-4435. It seems like goal of
HBase-4435 is quite different from mine.
[~lhofhansl]
Yes, if the scan spans multiple regions then i do a merge sort at the Client
side. Otherwise, if the scan is limited to a single region then i dont need to
perform a merge sort. So, in the latter it's slightly optimized. I've attached
the high level flowchart for reference.
Thanks,
Anil Gupta
Software Engineer II, Intuit, inc
> 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: 0.94.4
>
> 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
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