Hello, I have recently encountered a similar problem, it happens when I use hive to insert data into my table, then my cluster is hdp2.7.2, it is a newly built cluster, then when I check my namenode log I find this problem, but my active and standby are normal, there is no problem at all   2020-05-13 09:33:15,484 INFO ipc.Server (Server.java:run(2402)) - IPC Server handler 746 on 8020 caught an exception java.nio.channels.ClosedChannelException at sun.nio.ch.SocketChannelImpl.ensureWriteOpen(SocketChannelImpl.java:270) at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:461) at org.apache.hadoop.ipc.Server.channelWrite(Server.java:2910) at org.apache.hadoop.ipc.Server.access$2100(Server.java:138) at org.apache.hadoop.ipc.Server$Responder.processResponse(Server.java:1223) at org.apache.hadoop.ipc.Server$Responder.doRespond(Server.java:1295) at org.apache.hadoop.ipc.Server$Connection.sendResponse(Server.java:2266) at org.apache.hadoop.ipc.Server$Connection.access$400(Server.java:1375) at org.apache.hadoop.ipc.Server$Call.sendResponse(Server.java:734) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2391) 2020-05-13 09:33:15,484 WARN ipc.Server (Server.java:processResponse(1273)) - IPC Server handler 28 on 8020, call org.apache.hadoop.hdfs.protocol.ClientProtocol.complete from 10.100.1.9:48350 Call#3590 Retry#0: output error 2020-05-13 09:33:15,485 INFO ipc.Server (Server.java:run(2402)) - IPC Server handler 28 on 8020 caught an exception java.nio.channels.ClosedChannelException at sun.nio.ch.SocketChannelImpl.ensureWriteOpen(SocketChannelImpl.java:270) at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:461) at org.apache.hadoop.ipc.Server.channelWrite(Server.java:2910) at org.apache.hadoop.ipc.Server.access$2100(Server.java:138) at org.apache.hadoop.ipc.Server$Responder.processResponse(Server.java:1223) at org.apache.hadoop.ipc.Server$Responder.doRespond(Server.java:1295) at org.apache.hadoop.ipc.Server$Connection.sendResponse(Server.java:2266) at org.apache.hadoop.ipc.Server$Connection.access$400(Server.java:1375) at org.apache.hadoop.ipc.Server$Call.sendResponse(Server.java:734) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2391) 2020-05-13 09:33:15,484 WARN ipc.Server (Server.java:processResponse(1273)) - IPC Server handler 219 on 8020, call org.apache.hadoop.hdfs.protocol.ClientProtocol.addBlock from 10.100.1.12:52988 Call#3987 Retry#0: output error 2020-05-13 09:33:15,484 WARN ipc.Server (Server.java:processResponse(1273)) - IPC Server handler 176 on 8020, call org.apache.hadoop.hdfs.protocol.ClientProtocol.addBlock from 10.100.1.9:54838 Call#71 Retry#0: output error 2020-05-13 09:33:15,485 INFO ipc.Server (Server.java:run(2402)) - IPC Server handler 176 on 8020 caught an exception java.nio.channels.ClosedChannelException at sun.nio.ch.SocketChannelImpl.ensureWriteOpen(SocketChannelImpl.java:270) at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:461) at org.apache.hadoop.ipc.Server.channelWrite(Server.java:2910) at org.apache.hadoop.ipc.Server.access$2100(Server.java:138) at org.apache.hadoop.ipc.Server$Responder.processResponse(Server.java:1223) at org.apache.hadoop.ipc.Server$Responder.doRespond(Server.java:1295) at org.apache.hadoop.ipc.Server$Connection.sendResponse(Server.java:2266) at org.apache.hadoop.ipc.Server$Connection.access$400(Server.java:1375) at org.apache.hadoop.ipc.Server$Call.sendResponse(Server.java:734) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2391) 2020-05-13 09:33:15,485 WARN ipc.Server (Server.java:processResponse(1273)) - IPC Server handler 500 on 8020, call org.apache.hadoop.hdfs.protocol.ClientProtocol.complete from 10.100.1.12:52988 Call#3988 Retry#0: output error 2020-05-13 09:33:15,485 INFO ipc.Server (Server.java:run(2402)) - IPC Server handler 219 on 8020 caught an exception ... View more