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https://issues.apache.org/jira/browse/HDFS-11858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16189237#comment-16189237
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Arpit Agarwal commented on HDFS-11858:
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We should probably hold off on making this change. Currently the JN binds the
wildcard address by default. By restricting the bind address to a specific
hostname we may break some multi-homed deployments that depend on default
wildcard bind.
We could re-purpose this jira to document the fact that
GetJournalStateResponseProto.fromURL will be incorrect when the JN is using the
default http address. Also, I just noticed that the httpPort field in the
message is documented as deprecated. You could formalize it with the protobuf
{{deprecated}} option ([described
here|https://developers.google.com/protocol-buffers/docs/proto#options]).
> JN httpServerUri should be set to hostname when using Default Http Address
> --------------------------------------------------------------------------
>
> Key: HDFS-11858
> URL: https://issues.apache.org/jira/browse/HDFS-11858
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
> Reporter: Hanisha Koneru
> Assignee: Hanisha Koneru
> Attachments: HDFS-11858.001.patch
>
>
> Currently, when JN uses the default http address (0.0.0.0:8480), it sets the
> httpServerURI to 0.0.0.0:8480 as well. This value is passed as fromUrl
> address in GetEditLogManifestResponseProto and GetJournalStateResponseProto.
> When using the default http address, we should change the JN's httpServerURI
> to use the actual hostname.
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