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https://issues.apache.org/jira/browse/HBASE-3584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13185762#comment-13185762
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Zhihong Yu commented on HBASE-3584:
-----------------------------------
How about we always instantiate WALEdit, called localWalEdit.
We have the passedWalEdit.
And we maintain effectiveWalEdit which would be:
{code}
passedWalEdit == null ? localWalEdit : passedWalEdit
{code}
We use localWalEdit for coprocessor hook and effectiveWalEdit for
addFamilyMapToWALEdit() and log.append() :-)
> We need to atomically put/delete/increment in one call
> ------------------------------------------------------
>
> Key: HBASE-3584
> URL: https://issues.apache.org/jira/browse/HBASE-3584
> Project: HBase
> Issue Type: Bug
> Components: client, coprocessors, regionserver
> Reporter: ryan rawson
> Assignee: Lars Hofhansl
> Fix For: 0.94.0
>
> Attachments: 3584-v1.txt, 3584-v3.txt
>
>
> Right now we have the following calls:
> put(Put)
> delete(Delete)
> increment(Increments)
> But we cannot combine all of the above in a single call, complete with a
> single row lock. It would be nice to do that.
> It would also allow us to do a CAS where we could do a put/increment if the
> check succeeded.
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