Re: Running Cassandra with no open TCP ports
Mark: This begs a question -- why are you using Cassandra for this ? There are simpler noSQL stores than Cassandra that are better for embedding. Oleg On 2013-05-28 02:24:48 +, Mark Mccraw said: Hi All, I'm using Cassandra as an embedded datastore for a small service that doesn't need (or want) to act as a database service in any way. Moreover, we may want to start up multiple instances of the application, and right now whenever that happens, we get port conflicts on 7000 because Cassandra is listening for connections. I couldn't find an obvious way to disable listening on any port. Is there an easy way? Thanks! Mark -- Regards, Oleg Dulin http://www.olegdulin.com
Re: Running Cassandra with no open TCP ports
While not exactly optimized for embedded systems there is no reason it could not be done. Today's super computer is tomorrows embedded watch processor. On Tue, May 28, 2013 at 9:11 AM, Oleg Dulin oleg.du...@gmail.com wrote: Mark: This begs a question -- why are you using Cassandra for this ? There are simpler noSQL stores than Cassandra that are better for embedding. Oleg On 2013-05-28 02:24:48 +, Mark Mccraw said: Hi All, I'm using Cassandra as an embedded datastore for a small service that doesn't need (or want) to act as a database service in any way. Moreover, we may want to start up multiple instances of the application, and right now whenever that happens, we get port conflicts on 7000 because Cassandra is listening for connections. I couldn't find an obvious way to disable listening on any port. Is there an easy way? Thanks! Mark -- Regards, Oleg Dulin http://www.olegdulin.com
Re: Running Cassandra with no open TCP ports
Oleg: The simple answer for why I'm using Cassandra thusly is laziness/fear of uncertainty. I'm using Cassandra indirectly as the back end data store for Titan(http://thinkaurelius.github.io/titan/), which is a graph interface. Titan does let you swap out the data store, and it gives you several canned choices, one of which is Cassandra. BerkeleyDB might be a better choice for this project (and would address this issue), but it has licensing issues, so it's out, thus leaving me with using Cassandra or figuring out how to make Titan play with something like Derby. That's a project I just don't have time for or interest in. Apache HBase is another alternative, but that really seems like shooting a fly with an elephant gun... Edward, I completely agree that it should be doable. Is this something that you would advise a simple user to tackle (i.e. does it make any sense at all for me to pull down the Cassandra codebase and try to figure out where the relevant code lives and what to change), or is it something the maintainers are likely to be willing to slip in as a simple feature? If the latter, do I just file a feature request somewhere? Thanks! Mark McCraw mark.mcc...@sas.commailto:mark.mcc...@sas.com On May 28, 2013, at 9:51 AM, Edward Capriolo wrote: While not exactly optimized for embedded systems there is no reason it could not be done. Today's super computer is tomorrows embedded watch processor. On Tue, May 28, 2013 at 9:11 AM, Oleg Dulin oleg.du...@gmail.commailto:oleg.du...@gmail.com wrote: Mark: This begs a question -- why are you using Cassandra for this ? There are simpler noSQL stores than Cassandra that are better for embedding. Oleg On 2013-05-28 02:24:48 +, Mark Mccraw said: Hi All, I'm using Cassandra as an embedded datastore for a small service that doesn't need (or want) to act as a database service in any way. Moreover, we may want to start up multiple instances of the application, and right now whenever that happens, we get port conflicts on 7000 because Cassandra is listening for connections. I couldn't find an obvious way to disable listening on any port. Is there an easy way? Thanks! Mark -- Regards, Oleg Dulin http://www.olegdulin.comhttp://www.olegdulin.com/
Re: Running Cassandra with no open TCP ports
You can configure cassandra to use an ephemeral port for the storage endpoint by setting the following in cassandra.yaml: storage_port: 0 or by setting the system property cassandra.storage_port=0 Similarly for the RPC (thrift) endpoint, using rpc_port in cassandra.yaml or the system property cassandra.rpc_port Regards, Sam On 28 May 2013 03:24, Mark Mccraw mark.mcc...@sas.com wrote: Hi All, I'm using Cassandra as an embedded datastore for a small service that doesn't need (or want) to act as a database service in any way. Moreover, we may want to start up multiple instances of the application, and right now whenever that happens, we get port conflicts on 7000 because Cassandra is listening for connections. I couldn't find an obvious way to disable listening on any port. Is there an easy way? Thanks! Mark -- Sam Overton Acunu | http://www.acunu.com | @acunu
Running Cassandra with no open TCP ports
Hi All, I'm using Cassandra as an embedded datastore for a small service that doesn't need (or want) to act as a database service in any way. Moreover, we may want to start up multiple instances of the application, and right now whenever that happens, we get port conflicts on 7000 because Cassandra is listening for connections. I couldn't find an obvious way to disable listening on any port. Is there an easy way? Thanks! Mark
