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https://issues.apache.org/jira/browse/HDFS-5246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13774792#comment-13774792
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Brandon Li commented on HDFS-5246:
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{quote}"...2049, which is also the default port that Linux nfs uses. If Linux
nfs is already running on the machine then Hadoop nfs will not be albe to
start."{quote}
There can be only one NFSv3 server running on the same host no matter which
port is configured. right?
Regardless, this patch is a good idea. In the patch, you set the default port
to 2079 for tests, so the NFS test can run when an NFS server is using the
default port 2049 on the same host. This makes the testing more convenient.
> Hadoop nfs server binds to port 2049 which is the same as Linux nfs server
> --------------------------------------------------------------------------
>
> Key: HDFS-5246
> URL: https://issues.apache.org/jira/browse/HDFS-5246
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: nfs
> Affects Versions: 2.1.0-beta
> Environment: Red Hat Enterprise 6 with Sun Java 1.7 and IBM Java 1.6
> Reporter: Jinghui Wang
> Fix For: 3.0.0, 2.1.1-beta
>
> Attachments: HDFS-5246.patch
>
>
> Hadoop nfs binds the nfs server to port 2049,
> which is also the default port that Linux nfs uses. If Linux nfs is already
> running on the machine then Hadoop nfs will not be albe to start.
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