HikariCP determined that the connection was dead, i.e. (connection is evicted or dead), and therefore attempted to close it. The driver then said, “Sorry the connection is already closed”, which is no

http://lucene.472066.n3.nabble.com/HBase-is-able-to-connect-to-ZooKeeper-but-the-connection-closes-immediately-td3988004.html http://answers.mapr.com/questions/1986/hbase-connection-problem-from-c