In 0.4.1, you can using bellow configure to make RackAwareStrategy work: bash>vi storage-conf.xml
<!-- ~ Strategy: Setting this to the class that implements ~ IReplicaPlacementStrategy will change the way the node picker works. ~ Out of the box, Cassandra provides ~ org.apache.cassandra.locator.RackUnawareStrategy and ~ org.apache.cassandra.locator.RackAwareStrategy (place one replica in ~ a different datacenter, and the others on different racks in the same ~ one.) --> <ReplicaPlacementStrategy>org.apache.cassandra.locator.RackAwareStrategy</ReplicaPlacementStrategy> It will using IP address to make aware different DC: 192.168.0.1 - 192.168.0.2 --> same DC , same Rack 192.168.0.1 - 192.168.1.2 --> same DC , different Rack 192.168.0.1 - 192.169.0.2 --> different DC I had test it in my lab, things works fine. If you meet problem in test, I can provide help. Regards -Santal 2009/10/31 Jonathan Ellis <jbel...@gmail.com> > Oh, I misunderstood -- you're not trying to bootstrap, but getting > this error anyway. > > I'd probably call this "wontfix" for 0.4 since the fix is basically > all the work on ReplicationStrategy that's been done for 0.5, which > shouldn't be backported to a stable release imo. The silver lining is > that 0.5 will be out soon. > > If you want a workaround in the meantime, make > getWriteStorageEndPoints just return getReadStorageEndPoints(token) > which will not treat bootstrap nodes correctly but it should work fine > otherwise. :) > > -Jonathan > > On Fri, Oct 30, 2009 at 10:39 AM, Paderno Giampaolo > <giampaolo.pade...@yoox.com> wrote: > > Thanks for the reply, in the meantime it's possible to manage replica > between two datacenter with 0.4.1 even without bootstrap? In other words is > it possible to write on a rack-aware node? If so can you post me a sample > configuration? > > > > Thanks > > > > -----Original Message----- > > From: Jonathan Ellis [mailto:jbel...@gmail.com] > > Sent: venerdì 30 ottobre 2009 17.28 > > To: cassandra-dev@incubator.apache.org > > Subject: Re: bootstrap & rack aware on Cassandra4.1 > > > > Right, rack-aware (really, endpointsnitch-aware) bootstrap isn't > supported > > until 0.5, which trunk will become probably some time in November. > > > > On Fri, Oct 30, 2009 at 9:26 AM, Paderno Giampaolo < > > giampaolo.pade...@yoox.com> wrote: > > > >> Hi all, we experienced that writing on a rack aware node we get the > >> following error: > >> > >> > >> > >> ERROR [pool-1-thread-1] 2009-10-30 15:48:55,467 StorageProxy.java (line > >> 179) error writing key 13345671 > >> > >> java.lang.UnsupportedOperationException: Rack-aware bootstrapping not > >> supported > >> > >> at > >> > org.apache.cassandra.locator.RackAwareStrategy.getWriteStorageEndPoints(RackAwareStrategy.java:132) > >> > >> at > >> > org.apache.cassandra.locator.AbstractReplicationStrategy.getHintedStorageEndPoints(AbstractReplicationStrategy.java:69) > >> > >> at > >> > org.apache.cassandra.service.StorageService.getHintedStorageEndpointMap(StorageService.java:982) > >> > >> at > >> > org.apache.cassandra.service.StorageProxy.insertBlocking(StorageProxy.java:151) > >> > >> at > >> > org.apache.cassandra.service.CassandraServer.doInsert(CassandraServer.java:468) > >> > >> at > >> > org.apache.cassandra.service.CassandraServer.insert(CassandraServer.java:421) > >> > >> at > >> > org.apache.cassandra.service.Cassandra$Processor$insert.process(Cassandra.java:824) > >> > >> at > >> > org.apache.cassandra.service.Cassandra$Processor.process(Cassandra.java:627) > >> > >> at > >> > org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:253) > >> > >> at > >> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) > >> > >> at > java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown > >> Source) > >> > >> at java.lang.Thread.run(Unknown Source) > >> > >> > >> > >> We haven't understand how bootstrap works in Cassandra and how to enable > or > >> disable it. > >> > >> With trunk version everything works properly. > >> > >> > >> > >> Thanks > >> > >> > >> > >> Giampaolo Paderno > >> > >> Software Factory Developer > >> > >> YOOX Group > >> > >> Via Nannetti 1, 40069 Zola Predosa, Bologna, Italia > >> > >> T +39 051 6184211 > >> > >> F +39 051 6184215 > >> > >> giampaolo.pade...@yoox.com > >> > >> > >> > >> [image: http://cdn2.yoox.biz/signature/yooxygen.jpg] > >> > >> Please consider the environment before printing this e-mail. > >> > >> > >> > >> *NOTICE: The information contained in this message is confidential, > >> intended only for the use of the individual or entity named above.* > >> > >> *If you are not the intended recipient, please notify us immediately by > >> telephone or e-mail and destroy this communication. Thank you**.* > >> > > >
