[ https://issues.apache.org/jira/browse/CASSANDRA-2109?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ryan King updated CASSANDRA-2109: --------------------------------- Fix Version/s: (was: 0.8) 1.0 > Improve default window size for DES > ----------------------------------- > > Key: CASSANDRA-2109 > URL: https://issues.apache.org/jira/browse/CASSANDRA-2109 > Project: Cassandra > Issue Type: Improvement > Reporter: Stu Hood > Priority: Minor > Labels: des > Fix For: 1.0 > > > The window size for DES is currently hardcoded at 100 requests. A larger > window means that it takes longer to react to a suddenly slow node, but that > you have a smoother transition for scores. > An example of bad behaviour: with a window of size 100, we saw a case with a > failing node where if enough requests could be answered quickly out of cache > or bloomfilters, the window might be momentarily filled with 10 ms requests, > pushing out requests that had to go disk and took 10 seconds. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira