[jira] [Updated] (HBASE-4583) Integrate RWCC with Append and Increment operations

["Lars Hofhansl (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-4583?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lars Hofhansl updated HBASE-4583:
---------------------------------

    Attachment: 4583.txt

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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