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https://issues.apache.org/jira/browse/HDFS-5403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13802461#comment-13802461
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Aaron T. Myers commented on HDFS-5403:
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While I agree in principle, would you mind if we did that in a separate JIRA?
I'd really like to keep this fix small and isolated. If that's amenable to you,
I'll go ahead and file another one.
> WebHdfs client cannot communicate with older WebHdfs servers post HDFS-5306
> ---------------------------------------------------------------------------
>
> Key: HDFS-5403
> URL: https://issues.apache.org/jira/browse/HDFS-5403
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: webhdfs
> Affects Versions: 2.2.0
> Reporter: Aaron T. Myers
> Assignee: Aaron T. Myers
> Attachments: HDFS-5403.patch
>
>
> HDFS-5306 introduced the field infoSecurePort to the DatanodeIDProto PB
> definition and made it optional for compatibility purposes. However, we don't
> correctly the handle the case when this field is not present when
> deserializing the response from a WebHdfs request. This results in an NPE at
> the client when this occurs.
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