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https://issues.apache.org/jira/browse/HDFS-9427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15166393#comment-15166393
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Allen Wittenauer commented on HDFS-9427:
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bq. How about changing into something like below? Just replace 50 with 9
No. Let's actually move the ports to be contiguous instead of all over the
place. It's extremely sloppy and highlights the community's inability to plan
to have these giant gaps all over the place.
> 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 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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