flink 1.11.1消费kafka0.10.1.1，然后开窗口去重统计，时间是eventtime，窗口是1分钟。
程序的结构大致如下：
kafkaStream.keyBy(<keyselector>).window(<windowassigner>).aggregate(newAverageAggregate());
flink on yarn，
程序能跑，但无法checkpoint，查看taskmanager的日志，发现报错如下。
查看了下，那几个节点都是正常的running。如果去掉窗口统计的代码，直接print
kafkaStream，程序是可以正常checkpoint的。日志上也看不出其他问题，百思不得其解。求助各位大佬。
2020-11-18 13:30:52,475 INFO org.apache.kafka.common.utils.AppInfoParser
[] - Kafka version : 0.10.2.2
2020-11-18 13:30:52,475 INFO org.apache.kafka.common.utils.AppInfoParser
[] - Kafka commitId : cd80bc412b9b9701
2020-11-18 13:31:09,668 INFO org.apache.hadoop.io.retry.RetryInvocationHandler
[] -
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.ipc.StandbyException):
Operation category WRITE is not supported in state standby. Visit
https://s.apache.org/sbnn-error
at
org.apache.hadoop.hdfs.server.namenode.ha.StandbyState.checkOperation(StandbyState.java:88)
at
org.apache.hadoop.hdfs.server.namenode.NameNode$NameNodeHAContext.checkOperation(NameNode.java:1952)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkOperation(FSNamesystem.java:1423)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.create(NameNodeRpcServer.java:776)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.create(ClientNamenodeProtocolServerSideTranslatorPB.java:475)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:523)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:991)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:869)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:815)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1685)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2675)
, while invoking ClientNamenodeProtocolTranslatorPB.create over xxx:8020 after
1 failover attempts. Trying to failover after sleeping for 864ms.
--
kingdomad
