What's your intention to do this? There are unit test integrations using C* daemon. A related bug that prevented proper shutdown has been closed for C* 2.1-rc1: https://issues.apache.org/jira/browse/CASSANDRA-5635 It's perfectly fine to embed C* for unit tests.
But I'd definitely not recommend to use C* within a container in a real production environment. Not just because of the few System.exit calls in CassandraDaemon but also of the other places where System.exit is called for very good reasons. These reasons include system/node failure scenarios (for example disk failures). C* is designed to run in its own JVM process using dedicated hardware resources on multiple servers using commodity hardware without any virtualization or any shared storage. And it just works great with that. There are good reasons to move computation near to the data - but that's always a separate OS process on C* nodes. Examples are Hadoop and Spark. Am 22.07.2014 um 21:45 schrieb Rodgers, Hugh <hugh.rodg...@lmco.com>: > Hello – > > I have a use case where I need to run the Cassandra Server as an OSGi bundle. > I have been able to embed all of the Cassandra dependencies in an OSGi bundle > and run it on Karaf container, but I am not happy with the approach I have > thus far. > > Since CassandraDaemon has System.exit() calls in it, if these execute it will > bring down my entire OSGi container rather than just the bundle Cassandra is > running in. I hacked up a copy of CassandraDaemon enough to get it to run in > the bundle with no System.exit() calls, but the Cassandra StorageService is > not “aware” of it, i.e., I cannot call the StorageService.registerDaemon(…) > method because my copy of CassandraDaemon does not extend Apache’s. hence I > am getting exceptions when I do shutdown my container or restart the bundle > because the StorageService and my CassandraDaemon are not “linked”. > > I am considering trying to extend Apache’s CassandraDaemon and override its > setup() method with a SecurityManager that disables System.exit() calls. This > too sounds “hacky”. > > Does anyone have any better suggestions? Or know of an existing open source > project that has successfully embedded CassandraServer in an OSGi bundle? > > I am using Cassandra v2.0.7 and am currently using CQL (vs. Thrift). > > Thanks – > > Hugh
signature.asc
Description: Message signed with OpenPGP using GPGMail
