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https://issues.apache.org/jira/browse/HBASE-4583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13139550#comment-13139550
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Lars Hofhansl edited comment on HBASE-4583 at 10/30/11 7:06 AM:
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Here's a *sketch* of a patch.
May need some clean up but should work.
Basically the KVs of Append and Increment are applied to memstore through a
call to the "standard" applyFamilyMapToMemstore(...); then duplicates are
removed after the rwcc is moved forward.
Still a lot of boilerplate shared between Append and Increment.
I think the dup removal does not need to hold the regions updatesLock.readLock
(just the lock.readLock), but I am not entirely sure.
Comments/suggestions/flames/praise are welcome. :)
was (Author: lhofhansl):
Here a *sketch* of a patch.
May need some clean up but should work.
Basically the KVs of Append and Increment are applied to memstore through a
call to the "standard" applyFamilyMapToMemstore(...); then duplicates are
removed after the rwcc is moved forward.
Still a lot of boilerplate shared between Append and Increment.
I think the dup removal does not need to hold the regions updatesLock.readLock
(just the lock.readLock), but I am not entirely sure.
Comments/suggestions/flames/praise are welcome. :)
> Integrate RWCC with Append and Increment operations
> ---------------------------------------------------
>
> Key: HBASE-4583
> URL: https://issues.apache.org/jira/browse/HBASE-4583
> Project: HBase
> Issue Type: Bug
> Reporter: Lars Hofhansl
> Assignee: Lars Hofhansl
> Fix For: 0.94.0
>
> Attachments: 4583.txt
>
>
> Currently Increment and Append operations do not work with RWCC and hence a
> client could see the results of multiple such operation mixed in the same
> Get/Scan.
> The semantics might be a bit more interesting here as upsert adds and removes
> to and from the memstore.
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