For the first question, try "select * from system.peers" http://www.datastax.com/documentation/cql/cql_using/use_query_system_c.html?pagename=docs&version=1.2&file=cql_cli/using/query_system_tables
For the second, there is a JMX and nodetool command, but I'm not aware of any way to get it directly through CQL. http://www.datastax.com/documentation/cassandra/2.0/cassandra/tools/toolsGetEndPoints.html -Tupshin On Fri, Feb 28, 2014 at 1:27 PM, Clint Kelly <clint.ke...@gmail.com> wrote: > Hi everyone, > > I've been working on a rewrite of the Cassandra InputFormat for Hadoop 2 > using the DataStax Java driver instead of the Thrift API. > > I have a prototype working now, but there is one bit of code that I have > not been able to replace with code for the Java driver. In the > InputFormat#getSplits method, the old code has a call like the following: > > map = client.describe_ring(ConfigHelper.getInputKeyspace(conf)); > > This gets a list of the distinct token ranges for the Cassandra cluster. > > The rest of "getSplits" then takes these key ranges, breaks them up into > subranges (to match the user-specified input split size), and then gets the > replica nodes for the various token ranges (as the locations for the > splits). > > Does anyone know how I can do the following with the native protocol? > > - Get the distinct token ranges for the C* cluster > - Get the set of replica nodes for a given range of tokens? > > I tried looking around in Cluster and Metadata, among other places, in the > API docs, but I didn't see anything that looked like it would do what I > want. > > Thanks! > > Best regards, > Clint >
