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https://issues.apache.org/jira/browse/HBASE-5203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13187064#comment-13187064
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ramkrishna.s.vasudevan commented on HBASE-5203:
-----------------------------------------------
@Lars
Sorry i pasted the snippet from the code. If you take doMiniBatchPuts the
postPut() will be done onlly if the put is successful.
Here in mutateRow() we do the postPut in finally block.
So just i wanted to know if we the MutatedRow's log.append() fails we still
execute the postPut(). Pls do correct me if am wrong. I get the intent behind
the patch but this part am not sure.
> Group atomic put/delete operation into a single WALEdit to handle region
> server failures.
> -----------------------------------------------------------------------------------------
>
> Key: HBASE-5203
> URL: https://issues.apache.org/jira/browse/HBASE-5203
> Project: HBase
> Issue Type: Sub-task
> Components: client, coprocessors, regionserver
> Reporter: Lars Hofhansl
> Assignee: Lars Hofhansl
> Fix For: 0.94.0
>
> Attachments: 5203.txt
>
>
> HBASE-3584 does not not provide fully atomic operation in case of region
> server failures (see explanation there).
> What should happen is that either (1) all edits are applied via a single
> WALEdit, or (2) the WALEdits are applied in async mode and then sync'ed
> together.
> For #1 it is not clear whether it is advisable to manage multiple *different*
> operations (Put/Delete) via a single WAL edit. A quick check reveals that WAL
> replay on region startup would work, but that replication would need to be
> adapted. The refactoring needed would be non-trivial.
> #2 Might actually not work, as another operation could request sync'ing a
> later edit and hence flush these entries out as well.
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