I have a Cassandra 2.0.13 cluster with three datacenters, three nodes per datacenter. If I open cqlsh and do a select with any consistency level that crosses datacenters (e.g. QUORUM or ALL), it works, but takes 2+ minutes to return. The same statement with consistency ONE or LOCAL_QUORUM is as fast as it should be. It does not appear to be latency between centers; I can point cqlsh at a server in a different DC and it's not noticeably slow.
I tried turning tracing on to get a better idea of what was happening; but it complains `Session <long hex string> wasn't found`. I'm not entirely sure what direction to look in to find the problem. -- Andrew
