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https://issues.apache.org/jira/browse/HDFS-9064?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14906526#comment-14906526
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Haohui Mai commented on HDFS-9064:
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There are two reasons that the jsp is removed:
(1) Yes, there's security issues in block_info_xml.jsp.
(2) The output itself is problematic. The information, particularly, the
filename of the block, is inaccurate due to snapshots and truncate.
> NN old UI (block_info_xml) not available in 2.7.x
> -------------------------------------------------
>
> Key: HDFS-9064
> URL: https://issues.apache.org/jira/browse/HDFS-9064
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: HDFS
> Affects Versions: 2.7.0
> Reporter: Rushabh S Shah
> Assignee: Kanaka Kumar Avvaru
> Priority: Critical
>
> In 2.6.x hadoop deploys, given a blockId it was very easy to find out the
> file name and the locations of replicas (also whether they are corrupt or
> not).
> This was the REST call:
> {noformat}
> http://<nnAddress>:<port#>/block_info_xml.jsp?blockId=xxx
> {noformat}
> But this was removed by HDFS-6252 in 2.7 builds.
> Creating this jira to restore that functionality.
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