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https://issues.apache.org/jira/browse/HDFS-5573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13833943#comment-13833943
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Colin Patrick McCabe commented on HDFS-5573:
--------------------------------------------
This is a duplicate of HDFS-5555
> CacheAdmin doesn't work
> -----------------------
>
> Key: HDFS-5573
> URL: https://issues.apache.org/jira/browse/HDFS-5573
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 3.0.0
> Reporter: Fengdong Yu
> Assignee: Andrew Wang
>
> The code is compiled from the trunk, and run cacheAdmin on the Active NN,
> Exceptions as follow:
> {code}
> [hadoop@10 ~]$ hdfs cacheadmin -addPool test2
> Successfully added cache pool test2.
> [hadoop@10 ~]$ hdfs cacheadmin -addDirective -path /test/core-site.xml -pool
> test2 -replication 3
> Added cache directive 3
> [hadoop@10 ~]$
> [hadoop@10 ~]$
> [hadoop@10 ~]$
> [hadoop@10 ~]$ hdfs cacheadmin -listDirectives
> Exception in thread "main"
> org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.ipc.StandbyException):
> Operation category READ is not supported in state standby
> at
> org.apache.hadoop.hdfs.server.namenode.ha.StandbyState.checkOperation(StandbyState.java:87)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode$NameNodeHAContext.checkOperation(NameNode.java:1562)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkOperation(FSNamesystem.java:1128)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.listCacheDirectives(FSNamesystem.java:7168)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer$ServerSideCacheEntriesIterator.makeRequest(NameNodeRpcServer.java:1267)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer$ServerSideCacheEntriesIterator.makeRequest(NameNodeRpcServer.java:1253)
> at
> org.apache.hadoop.fs.BatchedRemoteIterator.makeRequest(BatchedRemoteIterator.java:77)
> at
> org.apache.hadoop.fs.BatchedRemoteIterator.makeRequestIfNeeded(BatchedRemoteIterator.java:85)
> at
> org.apache.hadoop.fs.BatchedRemoteIterator.hasNext(BatchedRemoteIterator.java:99)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.listCacheDirectives(ClientNamenodeProtocolServerSideTranslatorPB.java:1085)
> at
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:605)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:932)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1961)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1957)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1515)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1955)
> at org.apache.hadoop.ipc.Client.call(Client.java:1405)
> at org.apache.hadoop.ipc.Client.call(Client.java:1358)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
> at com.sun.proxy.$Proxy9.listCacheDirectives(Unknown Source)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB$CacheEntriesIterator.makeRequest(ClientNamenodeProtocolTranslatorPB.java:1079)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB$CacheEntriesIterator.makeRequest(ClientNamenodeProtocolTranslatorPB.java:1064)
> at
> org.apache.hadoop.fs.BatchedRemoteIterator.makeRequest(BatchedRemoteIterator.java:77)
> at
> org.apache.hadoop.fs.BatchedRemoteIterator.makeRequestIfNeeded(BatchedRemoteIterator.java:85)
> at
> org.apache.hadoop.fs.BatchedRemoteIterator.hasNext(BatchedRemoteIterator.java:99)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$32.hasNext(DistributedFileSystem.java:1656)
> at
> org.apache.hadoop.hdfs.tools.CacheAdmin$ListCacheDirectiveInfoCommand.run(CacheAdmin.java:450)
> at org.apache.hadoop.hdfs.tools.CacheAdmin.run(CacheAdmin.java:84)
> at org.apache.hadoop.hdfs.tools.CacheAdmin.main(CacheAdmin.java:89)
> {code}
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