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From "ramkrishna.s.vasudevan (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-5617) Provide coprocessor hooks in put flow while rollbackMemstore.
Date Thu, 22 Mar 2012 15:26:22 GMT
Provide coprocessor hooks in put flow while rollbackMemstore.
-------------------------------------------------------------

                 Key: HBASE-5617
                 URL: https://issues.apache.org/jira/browse/HBASE-5617
             Project: HBase
          Issue Type: Improvement
            Reporter: ramkrishna.s.vasudevan
            Assignee: ramkrishna.s.vasudevan
             Fix For: 0.96.0


With coprocessors hooks while put happens we have the provision to create new puts to other
tables or regions.  These puts can be done with writeToWal as false.
In 0.94 and above the puts are first written to memstore and then to WAL.  If any failure
in the WAL append or sync the memstore is rollbacked.  
Now the problem is that if the put that happens in the main flow fails there is no way to
rollback the 
puts that happened in the prePut.

We can add coprocessor hooks to like pre/postRoolBackMemStore.  Is any one hook enough here?

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