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From "Luke Lu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7532) Hadoop web UI 2.0
Date Fri, 19 Aug 2011 18:26:53 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13087860#comment-13087860
] 

Luke Lu commented on HADOOP-7532:
---------------------------------

bq. Should be supporting a GUI ON the Application Master at all?

Yes. see my response in MAPREDUCE-2858 for reasons.

bq. Having a GUI run on a separate box from the AM (even on a Gateway if the user wants to
have new and innovative visualizations) I think keeps our priorities straight and offers a
lot of flexibility.

This is just trying to punt the webapp/UI management to Hadoop users. As I said MAPREDUCE-2858,
this is clearly not scalable and not secure (you can't just link to an arbitrary webapp in
RM app list). It's an operations nightmare to let users to run arbitrary web UI on a gateway.
With MRv2, Hadoop becomes a fairly general purpose cloud operating system, running per user/version
web UI in a scalable and secure manner is a major advantage/feature that we should not shy
away from. 

> Hadoop web UI 2.0
> -----------------
>
>                 Key: HADOOP-7532
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7532
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 0.23.0
>            Reporter: Luke Lu
>            Assignee: Luke Lu
>             Fix For: 0.23.0
>
>
> People have expressed interests of bringing Hadoop web UI up to date with the lightweight
embedded web mvc framework used in MAPREDUCE-279 (cf. MAPREDUCE-2399). This is the umbrella
jira for UI improvement for 0.23+. Individual items like web framework refactor/move and the
unique challenge for MR2 webapp security will be filed separately.
> Thoughts/ideas on various improvement of Hadoop web UI are welcome here. Some of the
ideas will naturally become sub-issues.

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