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https://issues.apache.org/jira/browse/HDFS-5471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin Patrick McCabe updated HDFS-5471:
---------------------------------------
Assignee: Andrew Wang
> CacheAdmin -listPools fails when pools exist that user does not have
> permissions to
> -----------------------------------------------------------------------------------
>
> Key: HDFS-5471
> URL: https://issues.apache.org/jira/browse/HDFS-5471
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: tools
> Affects Versions: 3.0.0
> Reporter: Stephen Chu
> Assignee: Andrew Wang
>
> When a user does not have read permissions to a cache pool and executes "hdfs
> cacheadmin -listPools" the command will error complaining about missing
> required fields with something like:
> {code}
> [schu@hdfs-nfs ~]$ hdfs cacheadmin -listPools
> Exception in thread "main"
> org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.ipc.RemoteException):
> Message missing required fields: ownerName, groupName, mode, weight
> at
> com.google.protobuf.AbstractMessage$Builder.newUninitializedMessageException(AbstractMessage.java:770)
> at
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ListCachePoolsResponseElementProto$Builder.build(ClientNamenodeProtocolProtos.java:51722)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.listCachePools(ClientNamenodeProtocolServerSideTranslatorPB.java:1200)
> at
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$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$1.run(Server.java:2057)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2053)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1515)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2051)
> at
> org.apache.hadoop.hdfs.tools.CacheAdmin$ListCachePoolsCommand.run(CacheAdmin.java:675)
> at org.apache.hadoop.hdfs.tools.CacheAdmin.run(CacheAdmin.java:85)
> at org.apache.hadoop.hdfs.tools.CacheAdmin.main(CacheAdmin.java:90)
> [schu@hdfs-nfs ~]$
> {code}
> In this example, the pool "root" has 750 permissions, and the root superuser
> is able to successfully -listPools:
> {code}
> [root@hdfs-nfs ~]# hdfs cacheadmin -listPools
> Found 4 results.
> NAME OWNER GROUP MODE WEIGHT
> bar root root rwxr-xr-x 100
> foo root root rwxr-xr-x 100
> root root root rwxr-x--- 100
> schu root root rwxr-xr-x 100
> [root@hdfs-nfs ~]#
> {code}
> When we modify the root pool to mode 755, schu user can now -listPools
> successfully without error.
> {code}
> [schu@hdfs-nfs ~]$ hdfs cacheadmin -listPools
> Found 4 results.
> NAME OWNER GROUP MODE WEIGHT
> bar root root rwxr-xr-x 100
> foo root root rwxr-xr-x 100
> root root root rwxr-xr-x 100
> schu root root rwxr-xr-x 100
> [schu@hdfs-nfs ~]$
> {code}
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