The node(s) you are connecting to have disappeared, look at the server side logs for errors. It's probably running out of memory, if so turn off things like the key cache and key_cache_save_period until you have a stable system, then gradually turn them back on. You may also want to have a read of
We are making some tests using 3 nodes: A, B, C. We are bulk inserting
87500 keys, and for each of them 1 super column with 768 columns.
We are using hector 0.7.0-18 to insert the data, and at some point an
exception is raised, and sometimes cassandra deamon stop running in
one of the nodes.
The no
