agent agent install amazon Amazon EC2 ami AMI amazon instance-store Apache Cassandra Authentication authorization brisk brisk opscenter brisk token cache cassandra cassandra-cli cluster Composite composite columns CQL cql3 CQL 3.0 cql select condition cqlsh data model DataStax Community demo docs documentation keyspace dse DynamicCompositeType Dynamic Composite Type EC2 Error exception Execution Error fail hadoop hector hive import index install issue java jdbc JDBC driver jna jobtracker key lucene mahout mapreduce mbulman mx4j nodetool Opcenter opscenter ops center opscenter-agent ops center install issue partial match performance pig portfolio pycassa Python read replication factor San Francisco search Solr sstableloader Store Procedure thobbs thrift tjake tombstone delete compact twisted ubuntu windows