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From "Gabor Bota (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-15307) Improve NFS error handling: Unsupported verifier flavorAUTH_SYS
Date Wed, 23 May 2018 13:29:00 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-15307?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gabor Bota updated HADOOP-15307:
--------------------------------
    Attachment:     (was: 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
>
>
> 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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