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From "Ranith Sardar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-14443) Throwing RemoteException in the time of Read Operation
Date Fri, 19 Apr 2019 13:05:00 GMT

    [ 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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