hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Varun Sharma (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7093) Couple Increments/Appends with Put/Delete(s)
Date Thu, 15 Nov 2012 18:38:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13498221#comment-13498221

Varun Sharma commented on HBASE-7093:

Hi Andrew,

I remember seeing your other JIRA which talks about the incompatibility b/w Increment and
Mutation - I can't find it now but it looks like doing Increment would be harder so i might
not cover that in this JIRA (only cover Append here).
> Couple Increments/Appends with Put/Delete(s)
> --------------------------------------------
>                 Key: HBASE-7093
>                 URL: https://issues.apache.org/jira/browse/HBASE-7093
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.96.0
>            Reporter: Varun Sharma
>            Assignee: Varun Sharma
>         Attachments: 7093-v1.txt
> See related issue - https://issues.apache.org/jira/browse/HBASE-4583
> Currently, we cannot bundle increment/append with put/delete operations. The above JIRA
MVCC'izes the increment/append operations.
> One issue is that increment(s)/append(s) are not idempotent and hence repeating the transaction
has an associated issue of leading to incorrect value/append results. This could be solved
by passing additional tokens as part of the append(s).
> One possible high level approach could be:
> 1) Class IncrementMutation which inherits from Increment and Mutation
> 2) In the mutateRow call, we add a case for "IncrementMutation" object
> 3) Factor out the code wrapped inside the "lock and MVCC" from increment() function to
> 4) Call internalIncrement from mutateRow and increment()

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

View raw message