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Posted to dev@hbase.apache.org by "Andrew Purtell (JIRA)" <ji...@apache.org> on 2014/07/19 02:32:38 UTC
[jira] [Resolved] (HBASE-3276) delete followed by a put with the
same timestamp
[ https://issues.apache.org/jira/browse/HBASE-3276?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrew Purtell resolved HBASE-3276.
-----------------------------------
Resolution: Duplicate
Assignee: (was: Kannan Muthukkaruppan)
A mislaid now-duplicate of more recent issues filed on the same topic.
> 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
>
> [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.
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