Mind opening a ticket on https://datastax-oss.atlassian.net/browse/JAVA? It's almost surely a bug.
-- Sylvain On Thu, Dec 19, 2013 at 8:21 AM, David Tinker <david.tin...@gmail.com>wrote: > We are using Cassandra 2.0.3-1 installed on Ubuntu 12.04 from the > DataStax repo with the DataStax Java driver version 2.0.0-rc1. Every > now and then we get the following exception: > > 2013-12-19 06:56:34,619 [sql-2-t15] ERROR core.RequestHandler - > Unexpected error while querying /x.x.x.x > java.lang.NullPointerException > at > com.datastax.driver.core.HostConnectionPool.waitForConnection(HostConnectionPool.java:203) > at > com.datastax.driver.core.HostConnectionPool.borrowConnection(HostConnectionPool.java:107) > at com.datastax.driver.core.RequestHandler.query(RequestHandler.java:112) > at > com.datastax.driver.core.RequestHandler.sendRequest(RequestHandler.java:93) > at com.datastax.driver.core.Session$Manager.execute(Session.java:513) > at com.datastax.driver.core.Session$Manager.executeQuery(Session.java:549) > at com.datastax.driver.core.Session.executeAsync(Session.java:172) > > This happens during a big data load process which will do up to 256 > executeAsync's in parallel. > > Any ideas? Its not causing huge problems because the operation is just > retried by our code but it would be nice to eliminate it. >
