Re: 2.0
I agree on 2.0. For the thrift part, we've said clearly that we wouldn't remove it any time soon so let's stick to that. Besides, I would agree it's too soon anyway. What we can do however in the relatively short term on that front, is to pull thrift in it's own jar (we've almost removed all internal dependencies on thrift, and the few remaining ones will be easy to kill) and make that jar optional if you don't want to use it. -- Sylvain On Sat, Dec 1, 2012 at 2:52 AM, Ray Slakinski ray.slakin...@gmail.comwrote: I agree, I don't think its a great idea to drop thrift until the back end tools are 100% compatible and have some level of agreement from the major users of Cassandra. Paying off technical dept though I'm all for, and I think its key to the long term success of the application. Right now Supercolumns to someone new coming to the system might think Hey, these things look great. Lets use them and in a few months time hate all things that are cassandra. Ray Slakinski On 12/01, Jonathan Ellis wrote: As attractive as it would be to clean house, I think we owe it to our users to keep Thrift around for the forseeable future rather than orphan all Thrift-using applications (which is virtually everyone) on 1.2. On Sat, Dec 1, 2012 at 7:33 AM, Jason Brown jasedbr...@gmail.com wrote: Hi Jonathan, I'm in favor of paying off the technical debt, as well, and I wonder if there is value in removing support for thrift with 2.0? We're currently in 'do as little as possible' mode with thrift, so should we aggressively cast it off and push the binary CQL protocol? Seems like a jump to '2.0', along with the other initiatives, would be a reasonable time/milestone to do so. Thanks, -Jason On Fri, Nov 30, 2012 at 12:12 PM, Jonathan Ellis jbel...@gmail.com wrote: The more I think about it, the more I think we should call 1.2-next, 2.0. I'd like to spend some time paying off our technical debt: - replace supercolumns with composites (CASSANDRA-3237) - rewrite counters (CASSANDRA-4775) - improve storage engine support for wide rows - better stage management to improve latency (disruptor? lightweight threads? custom executor + queue?) - improved repair (CASSANDRA-3362, 2699) Of course, we're planning some new features as well: - triggers (CASSANDRA-1311) - improved query fault tolerance (CASSANDRA-4705) - row size limits (CASSANDRA-3929) - cql3 integration for hadoop (CASSANDRA-4421) - improved caching (CASSANDRA-1956, 2864) -- Jonathan Ellis Project Chair, Apache Cassandra co-founder, http://www.datastax.com @spyced -- Jonathan Ellis Project Chair, Apache Cassandra co-founder, http://www.datastax.com @spyced
Hector 0.8.0-2 update fails with : All host pools marked down. Retry burden pushed out to client.
Hi, I am working on a POC for cassandra 1.1.6 with hector 0.8.0-2. It fails on a update with the following exception. Anyone has seen this error before? Please could you help.. Hector throws an HectorException: Exception message : All host pools marked down. Retry burden pushed out to client. java.lang.NullPointerException at me.prettyprint.cassandra.model.MutatorImpl.execute(MutatorImpl.java:217) at me.prettyprint.cassandra.service.template.AbstractColumnFamilyTemplate.executeBatch(AbstractColumnFamilyTemplate.java:127) at me.prettyprint.cassandra.service.template.AbstractColumnFamilyTemplate.executeIfNotBatched(AbstractColumnFamilyTemplate.java:162) at me.prettyprint.cassandra.service.template.SuperCfTemplate.update(SuperCfTemplate.java:198) at com.visa.shared.cache.poc.dao.AbstractSuperColumnDataAccess.update(AbstractSuperColumnDataAccess.java:188) at com.visa.shared.cache.poc.domain.InterfaceStationProcessor.markLinkUp(InterfaceStationProcessor.java:47) at com.visa.shared.cache.poc.domain.InterfaceStationProcessor.processRequest(InterfaceStationProcessor.java:78) at com.visa.shared.cache.poc.domain.SwitchService.processRequest(SwitchService.java:78) at com.visa.shared.cache.poc.domain.SwitchService.access$000(SwitchService.java:13) at com.visa.shared.cache.poc.domain.SwitchService$1.run(SwitchService.java:59) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Exception in thread switchServiceTaskExceutor-1242 java.lang.NullPointerException at me.prettyprint.cassandra.model.MutatorImpl.addInsertion(MutatorImpl.java:158) at me.prettyprint.cassandra.service.template.SuperCfUpdater.updateInternal(SuperCfUpdater.java:115) at me.prettyprint.cassandra.service.template.SuperCfTemplate.update(SuperCfTemplate.java:196) Cassandra logs in /var/log/cassandra/system.log: INFO [FlushWriter:8] 2012-12-01 17:01:13,200 Memtable.java (line 264) Writing Memtable-jpp_0001@1896150523(17573964/21967455 serialized/live bytes, 1055 ops) ERROR [Thrift:1030] 2012-12-01 17:01:14,324 CustomTThreadPoolServer.java (line 200) Thrift error occurred during processing of message. org.apache.thrift.TException: Negative length: -2147418111 at org.apache.thrift.protocol.TBinaryProtocol.checkReadLength(TBinaryProtocol.java:388) at org.apache.thrift.protocol.TBinaryProtocol.readBinary(TBinaryProtocol.java:363) at org.apache.cassandra.thrift.Cassandra$batch_mutate_args.read(Cassandra.java:19724) at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:21) at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:34) at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:186) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Regards Jay VISA EUROPE is a technology business that provides the brand, systems, services and rules that make electronic payments between millions of consumers, retailers, businesses and governments happen. Visa Europe is a membership association of more than 3,700 members that includes banks and other payment service providers from 36 countries across Europe. We continually invest and innovate to create new and better ways to pay and be paid. For more information, please visit www.visaeurope.com. Please consider the environment before printing this email. This email (including attachments) is confidential and is solely intended for the addressee. Unless you are the addressee, you may not read, use or store this email in any way, or permit others to. If you have received it in error, please contact Visa Europe on +44 (0)20 7937 8111. Visa Europe Services Inc. is a company incorporated in Delaware USA, acting through its UK Establishment (UK Establishment number BR007632) whose registered office is at 1 Sheldon Square, London, W2 6TT.
