me.prettyprint.hector.api.exceptions.HectorException: All host pools marked down. Retry burden pushed out to client.
        at me.prettyprint.cassandra.connection.HConnectionManager.getClientFromLBPolicy(HConnectionManager.java:357)
        at me.prettyprint.cassandra.connection.HConnectionManager.operateWithFailover(HConnectionManager.java:237)
        at me.prettyprint.cassandra.model.ExecutingKeyspace.doExecuteOperation(ExecutingKeyspace.java:97)
        at me.prettyprint.cassandra.model.MutatorImpl.execute(MutatorImpl.java:243)
        at net.muzee.vodcassandra.cassandra.ChPreviewManager.add(ChPreviewManager.java:109)
        at net.muzee.job.VideoPreviewWorker.saveToCassandra(VideoPreviewWorker.java:139)
        at net.muzee.job.VideoPreviewWorker.handle(VideoPreviewWorker.java:86)
        at net.qty.JobQueue$1.runHandle(JobQueue.java:100)
        at net.qty.JobQueue$1.access$200(JobQueue.java:40)
        at net.qty.JobQueue$1$1.run(JobQueue.java:74)
ERROR [Thread-4] (ChPreviewManager.java:115) - can't store previews for channel: 1943363@720
me.prettyprint.hector.api.exceptions.HectorException: All host pools marked down. Retry burden pushed out to client.
        at me.prettyprint.cassandra.connection.HConnectionManager.getClientFromLBPolicy(HConnectionManager.java:357)
        at me.prettyprint.cassandra.connection.HConnectionManager.operateWithFailover(HConnectionManager.java:237)
        at me.prettyprint.cassandra.model.ExecutingKeyspace.doExecuteOperation(ExecutingKeyspace.java:97)
        at me.prettyprint.cassandra.model.MutatorImpl.execute(MutatorImpl.java:243)
        at net.muzee.vodcassandra.cassandra.ChPreviewManager.add(ChPreviewManager.java:109)
        at net.muzee.job.VideoPreviewWorker.saveToCassandra(VideoPreviewWorker.java:140)
        at net.muzee.job.VideoPreviewWorker.handle(VideoPreviewWorker.java:86)
        at net.qty.JobQueue$1.runHandle(JobQueue.java:100)
        at net.qty.JobQueue$1.access$200(JobQueue.java:40)
        at net.qty.JobQueue$1$1.run(JobQueue.java:74)