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From "Wouter Bolsterlee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7826) Improve Hbase Thrift v1 to return results in sorted order
Date Wed, 28 Aug 2013 20:05:53 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7826?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13752792#comment-13752792
] 

Wouter Bolsterlee commented on HBASE-7826:
------------------------------------------

Is it really safe to convert a previously required field to an optional one? Parsers using
the old definition file might unconditionally expect the field when handling input generated
using the newer definitions.
                
> 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
>             Fix For: 0.98.0, 0.95.2, 0.94.11
>
>         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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