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From "Nathaniel Cook (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-2256) Delete row, followed quickly to put of the same row will sometimes fail.
Date Tue, 22 Mar 2011 23:00:06 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13009894#comment-13009894

Nathaniel Cook commented on HBASE-2256:

We ran into this problem recently in our production code. A single hbase client needed to
first clean up of several columns by deleting them and then put a subset those columns back
in with new values. Frequently the delete and put call would happen in the same millisecond
thus masking the put. For now we have implemented a fix on our side but would be nice to see
a real fix for this, where the region servers handle this more gracefully.

Maybe we could log some warnings when this occurs for possible easier debugging? This was
an extremely difficult problem to find.

Or maybe someone has a clever solution? 

> Delete row, followed quickly to put of the same row will sometimes fail.
> ------------------------------------------------------------------------
>                 Key: HBASE-2256
>                 URL: https://issues.apache.org/jira/browse/HBASE-2256
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.20.3
>            Reporter: Clint Morgan
>         Attachments: hbase-2256.patch
> Doing a Delete of a whole row, followed immediately by a put to that row will sometimes
miss a cell. Attached is a test to provoke the issue.

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