Index shard recovery Exception in dumping data


I am using elasticSearch version 2.0 and dumping a 10GB table from mysql to elastic search using logstash.
The dump runs successfully for some time , and somewhere in between i see these kind of logs. Due to which the elasticSearch node doesn't start.

Can someone shed somelight on this issue.

IndexShardRecoveryException[failed to recovery from gateway]; nested: EngineCreationFailureException[failed to create engine]; nested: FileAlreadyExistsException[/home/rachit.puri/elasticsearch-2.0.0/data/rachit-Dev/nodes/0/indices/auth1/4/translog/translog-55.ckp];'