Re: configuring read write quorums in cassandra

2013-08-28 Thread Muntasir Raihan Rahman
Thanks! Muntasir. On Wed, Aug 28, 2013 at 3:52 PM, Robert Coli wrote: > On Wed, Aug 28, 2013 at 1:48 PM, Muntasir Raihan Rahman > wrote: >> >> Let us say I set read consistency level = ONE, and I am running the >> system for a while. Then I want to change the read consistency level >> to TWO so

Re: configuring read write quorums in cassandra

2013-08-28 Thread Muntasir Raihan Rahman
Thanks for clarifying that! Muntasir. On Wed, Aug 28, 2013 at 3:51 PM, Andrey Ilinykh wrote: > Each query has its own consistency level. It has nothing to do with > cassandra. > > > On Wed, Aug 28, 2013 at 1:48 PM, Muntasir Raihan Rahman > wrote: >> >> Sorry, let me clarify. >> >> Let us say I

Re: configuring read write quorums in cassandra

2013-08-28 Thread Robert Coli
On Wed, Aug 28, 2013 at 1:48 PM, Muntasir Raihan Rahman < muntasir.rai...@gmail.com> wrote: > Let us say I set read consistency level = ONE, and I am running the > system for a while. Then I want to change the read consistency level > to TWO so that reads now wait to hear back from 2 replicas inst

Re: configuring read write quorums in cassandra

2013-08-28 Thread Andrey Ilinykh
Each query has its own consistency level. It has nothing to do with cassandra. On Wed, Aug 28, 2013 at 1:48 PM, Muntasir Raihan Rahman < muntasir.rai...@gmail.com> wrote: > Sorry, let me clarify. > > Let us say I set read consistency level = ONE, and I am running the > system for a while. Then I

Re: configuring read write quorums in cassandra

2013-08-28 Thread Muntasir Raihan Rahman
Sorry, let me clarify. Let us say I set read consistency level = ONE, and I am running the system for a while. Then I want to change the read consistency level to TWO so that reads now wait to hear back from 2 replicas instead of 1 before responding to the client. I want to change this consistency

Re: configuring read write quorums in cassandra

2013-08-28 Thread Andrey Ilinykh
What do you mean "to change the cassandra read and write quorums"? Quorum is quorum, 2 of 3 for example. What do you want to change? Andrey On Wed, Aug 28, 2013 at 1:33 PM, Muntasir Raihan Rahman < muntasir.rai...@gmail.com> wrote: > Hello, > > Are there any tools (e.g like nodetool) that could

configuring read write quorums in cassandra

2013-08-28 Thread Muntasir Raihan Rahman
Hello, Are there any tools (e.g like nodetool) that could be used to change the cassandra read and write quorums at run-time? In general what is a good strategy of changing these system parameters while cassandra is running? Any pointers could be useful! Thanks Muntasir.