[jira] [Created] (ZOOKEEPER-1792) Observers don't need to keep the an in-memory copy of last commited proposals

["Raul Gutierrez Segales (JIRA)" <ji...@apache.org>]

Raul Gutierrez Segales created ZOOKEEPER-1792:
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             Summary: Observers don't need to keep the an in-memory copy of last commited proposals 
                 Key: ZOOKEEPER-1792
                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1792
             Project: ZooKeeper
          Issue Type: Improvement
            Reporter: Raul Gutierrez Segales
            Priority: Minor


In FinalRequestProcessor.java#processRequest we have:

{noformat}
     if (request.isQuorum()) {
                zks.getZKDatabase().addCommittedProposal(request);
     }
{noformat}

but this is only useful to the leader since committed proposals are only used from LearnerHandler to sync up followers. I presume followers do need it as they might become a leader at any point. But observers have no need for them, so we could probably special case this for them and optimize the path for them.




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