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https://issues.apache.org/jira/browse/HDFS-9427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15220759#comment-15220759
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Xiaobing Zhou commented on HDFS-9427:
-------------------------------------
I posted patch v005 your comments, thanks [~xiaochen] for review. Here's
mapping in the following.
I intentionally have 9820 being not strictly contiguous with other NN ports in
a sense people easily remember 9820 as they are more familiar with 8020 thanks
to [~arpiagariu] pointed me based on such a spirit.
I didn't see any 50070 reference in CommandsManual.md, which's already fixed in
the patches.
Namenode ports
----------------
50470 --> 9871
50070 --> 9870
8020 --> 9820
Secondary NN ports
---------------
50091 --> 9869
50090 --> 9868
Datanode ports
---------------
50020 --> 9867
50010 --> 9866
50475 --> 9865
50075 --> 9864
> 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-9427.003.patch, HDFS-9427.004.patch,
> HDFS-9427.005.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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