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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