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https://issues.apache.org/jira/browse/HDFS-14443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16821905#comment-16821905
]
Ranith Sardar commented on HDFS-14443:
--------------------------------------
When we are performing some read operation, it is giving "Operation category
WRITE is not supported in state observer" error for observer node. Although, we
have not performed any such write operation.
> Throwing RemoteException in the time of Read Operation
> ------------------------------------------------------
>
> Key: HDFS-14443
> URL: https://issues.apache.org/jira/browse/HDFS-14443
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Ranith Sardar
> Priority: Major
>
> 2019-04-19 20:54:59,178 DEBUG
> org.apache.hadoop.io.retry.RetryInvocationHandler:
> org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.ipc.StandbyException):
> Operation category WRITE is not supported in state observer. Visit
> [https://s.apache.org/sbnn-error]
> at
> org.apache.hadoop.hdfs.server.namenode.ha.StandbyState.checkOperation(StandbyState.java:98)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode$NameNodeHAContext.checkOperation(NameNode.java:1990)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkOperation(FSNamesystem.java:1443)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.msync(NameNodeRpcServer.java:1372)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.msync(ClientNamenodeProtocolServerSideTranslatorPB.java:1929)
> at
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:531)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1036)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:927)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:862)
> 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:1729)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2791)
> , while invoking $Proxy5.getFileInfo over
> [host-*-*-*-*/*.*.*.*:6*5,host-*-*-*-*/*.*.*.*:**,host-*-*-*-*/*.*.*.*:6**5].
> Trying to failover immediately.
>
> org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.ipc.StandbyException):
> Operation category WRITE is not supported in state observer. Visit
> [https://s.apache.org/sbnn-error]
> at
> org.apache.hadoop.hdfs.server.namenode.ha.StandbyState.checkOperation(StandbyState.java:98)
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