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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6439) NFS should not reject NFS requests to the NULL procedure whether port monitoring is enabled or not
Date Wed, 18 Jun 2014 21:00:25 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14036370#comment-14036370
] 

Hudson commented on HDFS-6439:
------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #5728 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/5728/])
HDFS-6439. NFS should not reject NFS requests to the NULL procedure whether port monitoring
is enabled or not. Contributed by Brandon Li (brandonli: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1603622)
* /hadoop/common/trunk/hadoop-common-project/hadoop-nfs/src/main/java/org/apache/hadoop/nfs/nfs3/Nfs3Interface.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-nfs/src/main/java/org/apache/hadoop/oncrpc/RpcProgram.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-nfs/src/test/java/org/apache/hadoop/oncrpc/TestFrameDecoder.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs-nfs/src/main/java/org/apache/hadoop/hdfs/nfs/conf/NfsConfigKeys.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs-nfs/src/main/java/org/apache/hadoop/hdfs/nfs/conf/NfsConfiguration.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs-nfs/src/main/java/org/apache/hadoop/hdfs/nfs/mount/RpcProgramMountd.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs-nfs/src/main/java/org/apache/hadoop/hdfs/nfs/nfs3/Nfs3.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs-nfs/src/main/java/org/apache/hadoop/hdfs/nfs/nfs3/RpcProgramNfs3.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs-nfs/src/test/java/org/apache/hadoop/hdfs/nfs/TestReaddir.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs-nfs/src/test/java/org/apache/hadoop/hdfs/nfs/nfs3/TestReaddir.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs-nfs/src/test/java/org/apache/hadoop/hdfs/nfs/nfs3/TestWrites.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/HdfsNfsGateway.apt.vm


> NFS should not reject NFS requests to the NULL procedure whether port monitoring is enabled
or not
> --------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-6439
>                 URL: https://issues.apache.org/jira/browse/HDFS-6439
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: nfs
>    Affects Versions: 2.5.0
>            Reporter: Brandon Li
>            Assignee: Aaron T. Myers
>             Fix For: 2.5.0
>
>         Attachments: HDFS-6439.003.patch, HDFS-6439.004.patch, HDFS-6439.005.patch, HDFS-6439.patch,
HDFS-6439.patch, linux-nfs-disallow-request-from-nonsecure-port.pcapng, mount-nfs-requests.pcapng
>
>
> As discussed in HDFS-6406, this JIRA is to track the follow update:
> 1. Port monitoring is the feature name with traditional NFS server and we may want to
make the config property (along with related variable allowInsecurePorts) something as dfs.nfs.port.monitoring.

> 2 . According to RFC2623 (http://www.rfc-editor.org/rfc/rfc2623.txt):
> {quote}    Whether port monitoring is enabled or not, NFS servers SHOULD NOT reject NFS
requests to the NULL procedure (procedure number 0). See subsection 2.3.1, "NULL procedure"
for a complete explanation. {quote}
> I do notice that NFS clients (most time) send mount NULL and nfs NULL from non-privileged
port. If we deny NULL call in mountd or nfs server, the client can't mount the export even
as user root.
> 3. it would be nice to have the user guide updated for the port monitoring feature.



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