I have a dev cluster of two Cassandra 2.12 servers on EC2 When adding a new server, I get a "Streaming error occurred java.lang.AssertionError: Unknown keyspace system_traces" exception on the cluster (not the new) server (full log below).
Indeed, when I cqlsh to the cluster server, I see the following: cqlsh> DESCRIBE KEYSPACES; system_traces system cqlsh> use system_traces; code=2200 [Invalid query] message="Keyspace 'system_traces' does not exist" While cqlsh> DESCRIBE KEYSPACE system_traces; Do works! Is it a bug? feature? Thanks Tzach Full log from adding a node: INFO [STREAM-INIT-/172.31.19.130:48054] 2015-05-18 11:36:17,734 StreamResultFuture.java:109 - [Stream #18f25dc0-fd52-11e4-a00a-c1b81a3b68f5 ID#0] Creating new streaming plan for Bootst rap INFO [STREAM-INIT-/172.31.19.130:48054] 2015-05-18 11:36:17,735 StreamResultFuture.java:116 - [Stream #18f25dc0-fd52-11e4-a00a-c1b81a3b68f5, ID#0] Received streaming plan for Bootstrap INFO [STREAM-INIT-/172.31.19.130:48055] 2015-05-18 11:36:17,736 StreamResultFuture.java:116 - [Stream #18f25dc0-fd52-11e4-a00a-c1b81a3b68f5, ID#0] Received streaming plan for Bootstrap ERROR [STREAM-IN-/172.31.19.130] 2015-05-18 11:36:17,777 StreamSession.java:472 - [Stream #18f25dc0-fd52-11e4-a00a-c1b81a3b68f5] Streaming error occurred java.lang.AssertionError: Unknown keyspace system_traces at org.apache.cassandra.db.Keyspace.<init>(Keyspace.java:273) ~[apache-cassandra-2.1.2.jar:2.1.2] at org.apache.cassandra.db.Keyspace.open(Keyspace.java:122) ~[apache-cassandra-2.1.2.jar:2.1.2] at org.apache.cassandra.db.Keyspace.open(Keyspace.java:99) ~[apache-cassandra-2.1.2.jar:2.1.2] at org.apache.cassandra.streaming.StreamSession.getColumnFamilyStores(StreamSession.java:280) ~[apache-cassandra-2.1.2.jar:2.1.2] at org.apache.cassandra.streaming.StreamSession.addTransferRanges(StreamSession.java:257) ~[apache-cassandra-2.1.2.jar:2.1.2] at org.apache.cassandra.streaming.StreamSession.prepare(StreamSession.java:488) ~[apache-cassandra-2.1.2.jar:2.1.2] at org.apache.cassandra.streaming.StreamSession.messageReceived(StreamSession.java:420) ~[apache-cassandra-2.1.2.jar:2.1.2] at org.apache.cassandra.streaming.ConnectionHandler$IncomingMessageHandler.run(ConnectionHandler.java:251) ~[apache-cassandra-2.1.2.jar:2.1.2]
