I really appreciate it, Ayush! Just recapping what I commented on the JIRA
issue, I would +1 a PR from you, and I have no strong preference between
the attached diff vs. the alternative solution you posted in a follow-up
comment.

Chris Nauroth


On Fri, Feb 27, 2026 at 7:03 AM Ayush Saxena <[email protected]> wrote:

> > I still don't have an answer for MAPREDUCE-7527 and would appreciate more
> help looking at it. It doesn't repro on 3.4.3, so I'm hoping to find
> something from diffing the source.
>
> Hi Chris,
> I also haven’t worked much in this part of the codebase and have very
> limited experience with the UI layer. But, I tried to debug the issue and
> posted a patch that fixes it on my end. I’m not entirely sure whether this
> is the best approach or if it only resolves the issue in my setup, but this
> is the best I could do to help move things forward.
>
> Let me know what you think. If it looks good, I can create a PR for it. If
> something is missing or incorrect, or if you have any feedback, I’m happy
> to take another look and continue debugging over the weekend.
>
> -Ayush
>
> On Fri, 27 Feb 2026 at 03:44, Chris Nauroth <[email protected]> wrote:
>
> > I've pulled in the following new patches in preparation for a new RC:
> >
> > HADOOP-19778: Remove Deprecated WASB Code from Hadoop
> > HADOOP-19822: Upgrade Avro to 1.11.5
> > MAPREDUCE-7533: MR AM UI wont be loaded on root path
> >
> > I still don't have an answer for MAPREDUCE-7527 and would appreciate more
> > help looking at it. It doesn't repro on 3.4.3, so I'm hoping to find
> > something from diffing the source.
> >
> > Chris Nauroth
> >
> >
> > On Tue, Feb 24, 2026 at 11:47 AM Chris Nauroth <[email protected]>
> > wrote:
> >
> > > I commented on MAPREDUCE-7527 with some initial analysis of a
> JavaScript
> > > error I found. I've never looked at this code much, so additional eyes
> > are
> > > welcome.
> > >
> > > Chris Nauroth
> > >
> > >
> > > On Tue, Feb 24, 2026 at 10:37 AM Chris Nauroth <[email protected]>
> > > wrote:
> > >
> > >> Hello everyone,
> > >>
> > >> We are definitely going to have an RC1. We want to include this on the
> > >> version boundary, which I just committed:
> > >>
> > >> HADOOP-19778: Remove Deprecated WASB Code from Hadoop
> > >>
> > >> The only difference is the removal of WASB, so any testing you've been
> > >> doing on RC0 is still helpful.
> > >>
> > >> Meanwhile, we can also look into MAPREDUCE-7527.
> > >>
> > >> Chris Nauroth
> > >>
> > >>
> > >> On Tue, Feb 24, 2026 at 9:34 AM Muralikrishna Dmmkr <
> > >> [email protected]> wrote:
> > >>
> > >>> Thanks Chris for driving the release,
> > >>>
> > >>> I have set up a single node environment with the 3.5.0-RC0, and was
> > >>> testing
> > >>> the JHS UI and found an issue, I have raised MAPREDUCE-7527
> > >>> <https://issues.apache.org/jira/browse/MAPREDUCE-7527> a few weeks
> > back
> > >>> and
> > >>> the issue still persists.
> > >>>
> > >>>
> > >>> Thanks
> > >>> Murali Krishna
> > >>>
> > >>>
> > >>> On Tue, Feb 24, 2026 at 11:40 AM Chris Nauroth <[email protected]>
> > >>> wrote:
> > >>>
> > >>> > I have put together a release candidate (RC0) for Hadoop 3.5.0.
> > >>> >
> > >>> > This is a new minor version focused on JDK 17 compatibility, new
> > cloud
> > >>> > storage integrations, dependency upgrades, security patches, and
> new
> > >>> > features.
> > >>> >
> > >>> > Change log
> > >>> >
> > >>>
> >
> https://dist.apache.org/repos/dist/dev/hadoop/hadoop-3.5.0-RC0/CHANGELOG.md
> > >>> >
> > >>> > Release notes
> > >>> >
> > >>> >
> > >>>
> >
> https://dist.apache.org/repos/dist/dev/hadoop/hadoop-3.5.0-RC0/RELEASENOTES.md
> > >>> >
> > >>> > The RC is available at:
> > >>> > https://dist.apache.org/repos/dist/dev/hadoop/hadoop-3.5.0-RC0/
> > >>> >
> > >>> > The git tag is release-3.5.0-RC0, commit
> > >>> > 2309c47a741040c914218b31d4326e2418cda439.
> > >>> >
> > >>> > The maven artifacts are staged at
> > >>> >
> > >>>
> > https://repository.apache.org/content/repositories/orgapachehadoop-1466
> > >>> >
> > >>> > You can find my public key at:
> > >>> > https://dist.apache.org/repos/dist/release/hadoop/common/KEYS
> > >>> >
> > >>> > Please try the RC and vote. This vote is intended to run for 5
> days.
> > >>> >
> > >>> > Chris Nauroth
> > >>> >
> > >>>
> > >>
> >
>

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