Hi, I'm running a heavy load with about 3200 clients accessing cassandra to execute read and update queries via YCSB. At certain moment, YCSB starts throwing exceptions indefinitely like the following:
* [30/07/2013 00:04:50] Read Exception (Thread: 5007; Host: 10.191.54.26): TimedOutException()* [30/07/2013 00:04:50] Read Exception (Thread: 4840; Host: 10.191.54.26): TimedOutException() *[30/07/2013 00:04:50] Read Exception (Thread: 5007; Host: 10.139.3.20): InvalidRequestException(why:You have not set a keyspace for this session)* [30/07/2013 00:04:50] Read Exception (Thread: 1644; Host: 10.191.54.26): TimedOutException() I'm using Cassandra 1.1.5 in a cluster with 2 seeds and 2 other nodes that I add (remove) on demand. Each node is a m1.large machine on Amazon. Any suggestion on what it could be? Unfortunately, upgrading the EC2 instance type is not an option for me. Other info: rpc_timeout_in_ms: 30000 thrift_framed_transport_size_in_mb: 60 thrift_max_message_length_in_mb: 64 Att. *Rodrigo Felix de Almeida* LSBD - Universidade Federal do Ceará Project Manager MBA, CSM, CSPO, SCJP
