Problem report HDP 2.4 User that is tunning NFSGateway doesn't have proxy rights

[#1]

These lines should come with HDP image in core-site.xml , if one wish to have working NFSGateway out of the box

    <property>
      <name>hadoop.proxyuser.hdfs.groups</name>
      <value>*</value>
    </property>
    <property>
      <name>hadoop.proxyuser.hdfs.hosts</name>
      <value>*</value>
    </property>

Without them this is the result in /var/log/hadoop/root/hadoop-hdfs-nfs3-sandbox.hortonworks.com.log

2016-06-10 10:22:21,763 WARN  nfs3.RpcProgramNfs3 (RpcProgramNfs3.java:fsinfo(1982)) - Exception
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.authorize.AuthorizationException): User: hdfs is not allowed to imperson
ate root
        at org.apache.hadoop.ipc.Client.call(Client.java:1427)
        at org.apache.hadoop.ipc.Client.call(Client.java:1358)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
        at com.sun.proxy.$Proxy11.getFileLinkInfo(Unknown Source)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileLinkInfo(ClientNamenodeProtocolTranslatorPB.java:7
84)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:187)
        at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
        at com.sun.proxy.$Proxy12.getFileLinkInfo(Unknown Source)
        at org.apache.hadoop.hdfs.DFSClient.getFileLinkInfo(DFSClient.java:2156)
        at org.apache.hadoop.hdfs.nfs.nfs3.Nfs3Utils.getFileStatus(Nfs3Utils.java:58)
        at org.apache.hadoop.hdfs.nfs.nfs3.Nfs3Utils.getFileAttr(Nfs3Utils.java:82)
        at org.apache.hadoop.hdfs.nfs.nfs3.RpcProgramNfs3.fsinfo(RpcProgramNfs3.java:1969)
        at org.apache.hadoop.hdfs.nfs.nfs3.RpcProgramNfs3.fsinfo(RpcProgramNfs3.java:1925)
        at org.apache.hadoop.hdfs.nfs.nfs3.RpcProgramNfs3.handleInternal(RpcProgramNfs3.java:2251)
        at org.apache.hadoop.oncrpc.RpcProgram.messageReceived(RpcProgram.java:167)
        at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
        at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:560)
        at org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:787)
        at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:281)
        at org.apache.hadoop.oncrpc.RpcUtil$RpcMessageParserStage.messageReceived(RpcUtil.java:132)
        at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
        at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:560)
        at org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:787)
        at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:296)
        at org.jboss.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:462)
        at org.jboss.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:443)
        at org.jboss.netty.handler.codec.frame.FrameDecoder.messageReceived(FrameDecoder.java:303)
        at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
        at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:560)
        at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:555)
        at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268)
        at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255)
        at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88)
        at org.jboss.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:107)
        at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:312)
        at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:88)
        at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)
        at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
        at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)

with mount failing without useful error message

mount -t nfs -o vers=3,proto=tcp,nolock 127.0.0.1:/ /media/
mount.nfs: mount system call failed

[#2]

This may require a bug or at least documentation of the above

[#3]

@Ali Bajwa, I'm from the Tech Docs team. I'm happy to work with you, assuming that you need documentation assistance. Please file a bug and/or contact me directly.

[#4]

@Ventseslav Vat:

This appears to be documented already in Step 1 of this topic in our documentation:

http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.4.2/bk_hdfs_nfs_gateway/content/user-guide-hdfs-...

You can also find it documented in the Apache docs:

https://hadoop.apache.org/docs/r2.7.2/hadoop-project-dist/hadoop-hdfs/HdfsNfsGateway.html

Hope this helps,

Pattie

[#5]

That is correct, but I'm talking about HDP 2.4 and 2.3.2 sandboxes. NfsGateway should work in those VM images. If you do a plain Ambari cluster from start, the NfsGateway is properly configured.

[#6]

@Ventseslav Vat

We in Tech Docs have no control over the sandbox. You should file a bug against the HDP-2.3.2 and HDP-2.4 Sandbox (Project: Bug DB, Issue Type: Bug, Component: Sandbox). Provide a description of the problem in the bug, and also a link to this HCC post.

[#7]

Hopefully, that will fix your issue and help others in the future.

[#8]

@Ventseslav Vat

Sorry, about that. Mistakenly assumed you were a Hortonworks employee and could file a bug. https://hortonworks.jira.com/browse/BUG-60085 has been filed on this issue. Hopefully, the problem will be fixed very soon.

[#9]

@Ventseslav Vat, I filed a JIRA against the Sandbox for this issue (https://hortonworks.jira.com/browse/BUG-60085), so the Sandbox team will take it from here. Thanks very much for letting us know about this issue.

[#10 · Accepted solution]

@Ventseslav Vat, BUG-60085 has been resolved, so this update will be in the next version (HDP-2.5) of the Sandbox.