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https://issues.apache.org/jira/browse/HDFS-9427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15156476#comment-15156476
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Vinayakumar B commented on HDFS-9427:
-------------------------------------
Following are also falls in same range
{code}
int DFS_NAMENODE_HTTP_PORT_DEFAULT = 50070;
String DFS_NAMENODE_HTTP_ADDRESS_KEY = "dfs.namenode.http-address";
int DFS_NAMENODE_HTTPS_PORT_DEFAULT = 50470;
String DFS_NAMENODE_HTTPS_ADDRESS_KEY = "dfs.namenode.https-address";
{code}
How about changing into something like below? Just replace {{50}} with {{9}}
{code}
Namenode ports
----------------
50070 --> 9070
50470 --> 9470
Datanode ports
---------------
50010 --> 9010
50020 --> 9020
50075 --> 9075
50475 --> 9475
Secondary NN ports
---------------
50090 --> 9090
50091 --> 9091
{code}
> 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, namenode
> Affects Versions: 3.0.0
> Reporter: Arpit Agarwal
> Assignee: Xiaobing Zhou
> Priority: Critical
> Labels: Incompatible
>
> 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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