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From "Jonathan Gray (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1563) incrementColumnValue does not write to WAL
Date Thu, 25 Jun 2009 19:48:07 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12724235#action_12724235
] 

Jonathan Gray commented on HBASE-1563:
--------------------------------------

@Irfan  Excuse me... Got confused for a second.  Once HBASE-1577 goes in, these absolutely
*will* have atomic behavior.  Each is guaranteed to have worked and performed the increment
once it returns, and all readers will always see the latest value.

> incrementColumnValue does not write to WAL
> ------------------------------------------
>
>                 Key: HBASE-1563
>                 URL: https://issues.apache.org/jira/browse/HBASE-1563
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.20.0
>            Reporter: Jonathan Gray
>            Assignee: Jonathan Gray
>             Fix For: 0.20.0
>
>         Attachments: HBASE-1563-v1.patch, HBASE-1563-v2.patch, HBASE-1563-v3.patch, HBASE-1563-v4.patch
>
>
> Incrementing never writes to the WAL.  Under failure scenarios, you will lose all increments
since the last flush.
> Do we want to expose the option to the client as to whether to write to WAL or not?

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