It looks like you tried to pass the string "{replication_factor:2}"
You need to pas a Map<String, String> type , where the the key is the option and the value is the option value. Cheers ----------------- Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 20/12/2011, at 12:02 PM, A J wrote: > What is the syntax of setStrategy_options in thrift. > > The following fails: > > Util.java:22: > setStrategy_options(java.util.Map<java.lang.String,java.lang.String>) > in org.apache.cassandra.thrift.KsDef cannot be applied to > (java.lang.String) > newKs.setStrategy_options("{replication_factor:2}");