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https://issues.apache.org/jira/browse/HDFS-5978?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13942682#comment-13942682
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Akira AJISAKA commented on HDFS-5978:
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Thanks for the comments! I renewed a patch.
bq. It is better to avoid the dependency. Can you experiement with
{{Jackson#ObjectMapper}}?
I suppose it's better to use {{JsonUtil}} because it is used in WebHDFS
({{NameNodeWebHdfsMethods.java}}). Nevertheless, I'll try to use
{{ObjectMapper}} and attach a patch later.
> 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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