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