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java.nio.channels.ClosedChannelException: null at[na:1.7.0_05] at[na:1.7.0_05] at org.apache.zookeeper.ClientCnxnSocketNIO.cleanup([zookeeper-3.4.5.jar:3.4.5-1392090] at org.apache.zookeeper.ClientCnxn$SendThread.cleanup([zookeeper-3.4.5.jar:3.4.5-1392090] at org.apache.zookeeper.ClientCnxn$[zookeeper-3.4.5.jar:3.4.5-1392090]