Spark-sql java.net.NoRouteToHostException on cluster reboot

We had a EMR cluster reboot and hit this error all of sudden. The error is independent of EMR so worth sharing. Error: Caused by: java.net.NoRouteToHostException: No route to host at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717) at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:531) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:495) at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:614) at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:712) at org.apache.hadoop.ipc.Client$Connection.access$2900(Client.java:375) at org.apache.hadoop.ipc.Client.getConnection(Client.java:1528) at org.apache.hadoop.ipc.Client.call(Client.java:1451) … 56 more java.net.NoRouteToHostException: …

More