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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9427) HDFS should not default to ephemeral ports
Date Fri, 04 Mar 2016 23:22:41 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15180733#comment-15180733
] 

Arpit Agarwal commented on HDFS-9427:
-------------------------------------

The v002 patch lgtm. I'll postpone committing at least 3-4 days in case there are additional
comments.

9070-9079 [are unassigned|https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt]
so this looks like a good range to use.

I know nothing about KMS so not sure if it is safe to change the port number as [~jmhsieh]
proposed. I'll file a separate Jira for that and we can address the ephemeral ports here.

> HDFS should not default to ephemeral ports
> ------------------------------------------
>
>                 Key: HDFS-9427
>                 URL: https://issues.apache.org/jira/browse/HDFS-9427
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode, hdfs-client, namenode
>    Affects Versions: 3.0.0
>            Reporter: Arpit Agarwal
>            Assignee: Xiaobing Zhou
>            Priority: Critical
>              Labels: Incompatible
>         Attachments: HDFS-9427.000.patch, HDFS-9427.001.patch, HDFS-9427.002.patch
>
>
> HDFS defaults to ephemeral ports for the some HTTP/RPC endpoints. This can cause bind
exceptions on service startup if the port is in use.



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