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Sylvain Lebresne commented on CASSANDRA-7344: --------------------------------------------- I see what you mean and I do think this should work. I think we'd need a new Paxos message (which means this would have to target 3.0) that requests the current paxos state without asking for a promise. > Read at SERIAL can lead to unnecessary contention > -------------------------------------------------- > > Key: CASSANDRA-7344 > URL: https://issues.apache.org/jira/browse/CASSANDRA-7344 > Project: Cassandra > Issue Type: Improvement > Reporter: sankalp kohli > Assignee: sankalp kohli > Priority: Minor > > If two clients are doing a read at serial on the same row, it does a full > prepare step to figure out whether there is any updates or cas in flight or > uncompleted. > This can cause contention between then leading to waste of time in retrying. > One of the request will not get a promise and will need to sleep. > Instead they can check whether there is anything to finish and if not > continue. > If there is something to be done, then they can do the full prepare. -- This message was sent by Atlassian JIRA (v6.2#6252)