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https://issues.apache.org/jira/browse/HBASE-7826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jean-Daniel Cryans updated HBASE-7826:
--------------------------------------
Resolution: Fixed
Release Note:
When passing a TScan object, it's possible to ask for sortColumns. The result
of doing this will populate TRowResult's "sortedColumns" instead of "columns",
where the former is a list of the new type TColumn that wraps a column name and
a TCell.
Backward compatibility is kept. Old clients will work against thrift servers
with this patch, but new clients cannot request sorted columns on an old thrift
server.
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
Committed to 0.94, 0.95 and trunk.
> Improve Hbase Thrift v1 to return results in sorted order
> ---------------------------------------------------------
>
> Key: HBASE-7826
> URL: https://issues.apache.org/jira/browse/HBASE-7826
> Project: HBase
> Issue Type: New Feature
> Components: Thrift
> Affects Versions: 0.94.0
> Reporter: Shivendra Pratap Singh
> Assignee: Shivendra Pratap Singh
> Priority: Minor
> Labels: Hbase, Thrift
> Attachments: 7826-v6.patch, HBASE-7826-0.94-v7.patch,
> hbase_7826.patch, hbase_7826.patch, HBASE-7826.patch,
> hbase_7826_sortcolumnFlag.1.patch, hbase_7826_sortcolumnFlag.2.patch,
> hbase_7826_sortcolumnFlag.3.patch, hbase_7826_sortcolumnFlag.4.patch,
> hbase_7826_sortcolumnFlag.5.patch, hbase_7826_sortcolumnFlag.patch,
> hbase_7826_trunk.patch
>
>
> Hbase natively stores columns sorted based on the column qualifier. A scan is
> guaranteed to return sorted columns. The Java API works fine but the Thrift
> API is broken. Hbase uses TreeMap that ensures that sort order is maintained.
> However Hbase thrift specification uses a simple Map to store the data. A
> map, since it is unordered doesn't result in columns being returned in a sort
> order that is consistent with their storage in Hbase.
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