Hi everyone, What do you think about this proposal ? http://www.slideshare.net/viggates/openstack-india-meetupscheduler
It seems they found a real solution for a scaling scheduler. The good idea is to move intelligence on compute. A synchronisation is only needed for anti-afinity and stuff like that which can be managed in an other way. — Jean-Daniel Bonnetot http://www.ovh.com @pilgrimstack > Le 12 oct. 2015 à 12:30, Thierry Carrez <[email protected]> a écrit : > > Clint Byrum wrote: >> Excerpts from Joshua Harlow's message of 2015-10-10 17:43:40 -0700: >>> I'm curious is there any more detail about #1 below anywhere online? >>> >>> Does cassandra use some features of the JVM that the openJDK version >>> doesn't support? Something else? >> >> This about sums it up: >> >> https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/service/StartupChecks.java#L153-L155 >> >> // There is essentially no QA done on OpenJDK builds, and >> // clusters running OpenJDK have seen many heap and load issues. >> logger.warn("OpenJDK is not recommended. Please upgrade to the newest >> Oracle Java release"); > > Or: > https://twitter.com/mipsytipsy/status/596697501991702528 > > This is one of the reasons I'm generally negative about Java solutions > (Cassandra or Zookeeper): the free software JVM is still not on par with > the non-free one, so we indirectly force our users to use a non-free > dependency. I've been there before often enough to hear "did you > reproduce that bug under the {Sun,Oracle} JVM" quite a few times. > > When the Java solution is the only solution for a problem space that > might still be a good trade-off (compared to reinventing the wheel for > example), but to share state or distribute locks, there are some pretty > good other options out there that don't suffer from the same fundamental > problem... > > -- > Thierry Carrez (ttx) > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: [email protected]?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev __________________________________________________________________________ OpenStack Development Mailing List (not for usage questions) Unsubscribe: [email protected]?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
