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https://issues.apache.org/jira/browse/HADOOP-15307?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gabor Bota updated HADOOP-15307:
--------------------------------
Attachment: HADOOP-15307.002.patch
> Improve NFS error handling: Unsupported verifier flavorAUTH_SYS
> ---------------------------------------------------------------
>
> Key: HADOOP-15307
> URL: https://issues.apache.org/jira/browse/HADOOP-15307
> Project: Hadoop Common
> Issue Type: Bug
> Components: nfs
> Environment: CentOS 7.4, CDH5.13.1, Kerberized Hadoop cluster
> Reporter: Wei-Chiu Chuang
> Assignee: Gabor Bota
> Priority: Major
> Labels: newbie
> Attachments: HADOOP-15307.001.patch, HADOOP-15307.002.patch
>
>
> When NFS gateway starts and if the portmapper request is denied by rpcbind
> for any reason (in our case, /etc/hosts.allow did not have the localhost),
> NFS gateway fails with the following obscure exception:
> {noformat}
> 2018-03-05 12:49:31,976 INFO org.apache.hadoop.oncrpc.SimpleUdpServer:
> Started listening to UDP requests at port 4242 for Rpc program: mountd at
> localhost:4242 with workerCount 1
> 2018-03-05 12:49:31,988 INFO org.apache.hadoop.oncrpc.SimpleTcpServer:
> Started listening to TCP requests at port 4242 for Rpc program: mountd at
> localhost:4242 with workerCount 1
> 2018-03-05 12:49:31,993 TRACE org.apache.hadoop.oncrpc.RpcCall:
> Xid:692394656, messageType:RPC_CALL, rpcVersion:2, program:100000, version:2,
> procedure:1, credential:(AuthFlavor:AUTH_NONE),
> verifier:(AuthFlavor:AUTH_NONE)
> 2018-03-05 12:49:31,998 FATAL org.apache.hadoop.mount.MountdBase: Failed to
> start the server. Cause:
> java.lang.UnsupportedOperationException: Unsupported verifier flavorAUTH_SYS
> at
> org.apache.hadoop.oncrpc.security.Verifier.readFlavorAndVerifier(Verifier.java:45)
> at org.apache.hadoop.oncrpc.RpcDeniedReply.read(RpcDeniedReply.java:50)
> at org.apache.hadoop.oncrpc.RpcReply.read(RpcReply.java:67)
> at org.apache.hadoop.oncrpc.SimpleUdpClient.run(SimpleUdpClient.java:71)
> at org.apache.hadoop.oncrpc.RpcProgram.register(RpcProgram.java:130)
> at org.apache.hadoop.oncrpc.RpcProgram.register(RpcProgram.java:101)
> at org.apache.hadoop.mount.MountdBase.start(MountdBase.java:83)
> at org.apache.hadoop.hdfs.nfs.nfs3.Nfs3.startServiceInternal(Nfs3.java:56)
> at org.apache.hadoop.hdfs.nfs.nfs3.Nfs3.startService(Nfs3.java:69)
> at
> org.apache.hadoop.hdfs.nfs.nfs3.PrivilegedNfsGatewayStarter.start(PrivilegedNfsGatewayStarter.java:60)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:243)
> 2018-03-05 12:49:32,007 INFO org.apache.hadoop.util.ExitUtil: Exiting with
> status 1{noformat}
> Reading the code comment for class Verifier, I think this bug existed since
> its inception
> {code:java}
> /**
> * Base class for verifier. Currently our authentication only supports 3 types
> * of auth flavors: {@link RpcAuthInfo.AuthFlavor#AUTH_NONE}, {@link
> RpcAuthInfo.AuthFlavor#AUTH_SYS},
> * and {@link RpcAuthInfo.AuthFlavor#RPCSEC_GSS}. Thus for verifier we only
> need to handle
> * AUTH_NONE and RPCSEC_GSS
> */
> public abstract class Verifier extends RpcAuthInfo {{code}
> The verifier should also handle AUTH_SYS too.
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