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https://issues.apache.org/jira/browse/HDFS-5978?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13945410#comment-13945410
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Haohui Mai commented on HDFS-5978:
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bq. Just to be clear, this is an WebHDFS operation over HTTP, it is not part of
the WebHDFS FileSystem HTTP REST API, right?
I'm not exactly sure what you mean. The patch provides an offline image viewer
that creates a HTTP server and exposes the same APIs of WebHDFS, so that the
users can use other tools (like {{hadoop dfs -ls}} or the web UI) to inspect
the fsimage. Other than that it has nothing to do with WebHDFS.
Thanks for bringing it up. However, it might be better to update the
description to avoid the confusion.
> Create a tool to take fsimage and expose read-only WebHDFS API
> --------------------------------------------------------------
>
> Key: HDFS-5978
> URL: https://issues.apache.org/jira/browse/HDFS-5978
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: tools
> Reporter: Akira AJISAKA
> Assignee: Akira AJISAKA
> Labels: newbie
> Attachments: HDFS-5978.2.patch, HDFS-5978.3.patch, HDFS-5978.4.patch,
> HDFS-5978.patch
>
>
> Suggested in HDFS-5975.
> Add an option to exposes the read-only version of WebHDFS API for
> OfflineImageViewer. You can imagine it looks very similar to jhat.
> That way we can allow the operator to use the existing command-line tool, or
> even the web UI to debug the fsimage. It also allows the operator to
> interactively browsing the file system, figuring out what goes wrong.
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