hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Kannan Muthukkaruppan (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HBASE-3276) delete followed by a put with the same timestamp
Date Wed, 24 Nov 2010 19:45:14 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3276?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kannan Muthukkaruppan reassigned HBASE-3276:
--------------------------------------------

    Assignee: Kannan Muthukkaruppan

> delete followed by a put with the same timestamp
> ------------------------------------------------
>
>                 Key: HBASE-3276
>                 URL: https://issues.apache.org/jira/browse/HBASE-3276
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Kannan Muthukkaruppan
>            Assignee: Kannan Muthukkaruppan
>
> [Note: This issue is relevant only for cases that don't use the default "time" based
versions, but provide/manage versions explicitly.]
> The fix for HBASE-1485 ensures that if there are multiple puts with the same timestamp
the later one wins.
> However, if there is a delete for a specific timestamp, then the later put doesn't win.

> Say for example the following is the sequence of operations:
> put                         row/col/v1 - value1
> deleteColumn     row/col/v1
> put                         row/col/v1 - value2
> Without the deleteColumn(), HBASE-1485 ensures that "value2" is the winner.
> However, with the deleteColumn() thrown into the mix, the delete wins, and one cannot
insert a new value at that version. [The only, unsatisfactory, workaround at this point seems
to be trigger a major compaction. The major compact would clear the delete marker, and allow
new cells to be created with that version again.] 
> ---
> Seems like it might not be too complicated to extend the fix for HBASE-1485 to also respect
ordering between delete/put operations. I'll look into this further.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message