That's awesome! Thank you! All of these are merged now.

I have completed branching for the release. trunk is set to 3.6.0-SNAPSHOT.
We have a new branch-3.5, set to 3.5.1-SNAPSHOT. We have a new branch-3.5.0
with the version set to 3.5.0 (no SNAPSHOT) for the release.

Committers, please remember to merge to both trunk and branch-3.5 going
forward. Please don't merge to branch-3.5.0 unless it's a 3.5.0 blocker.

Chris Nauroth


On Mon, Feb 23, 2026 at 5:10 AM slfan1989 <[email protected]> wrote:

> Hi Chris,
>
> I believe we’ve finally addressed the flaky unit tests you were seeing in
> #8237.
>
> The Yetus run came back completely green
>
> Already fixed unit tests (merged):
>
>    - hadoop.yarn.sls.appmaster.TestAMSimulator
>    -
>
>  hadoop.yarn.server.router.subcluster.fair.TestYarnFederationWithFairScheduler
>    - hadoop.yarn.server.router.webapp.TestFederationWebApp
>    - hadoop.yarn.server.router.webapp.TestRouterWebServicesREST
>    - hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesReservation
>
> Additional flaky tests that have been fixed and are now awaiting review:
>
>    - hadoop.hdfs.tools.TestDFSAdmin →
>    https://github.com/apache/hadoop/pull/8269
>    - hadoop.yarn.server.resourcemanager.TestRMHA →
>    https://github.com/apache/hadoop/pull/8267
>    - hadoop.yarn.service.TestYarnNativeServices →
>    https://github.com/apache/hadoop/pull/8266
>    - org.apache.hadoop.mapreduce.v2.TestUberAM →
>    https://github.com/apache/hadoop/pull/8263
>
> Would you mind taking a look at the open PRs when you have a moment?
>
> Thanks a lot!
>
> Best regards,
>
> Shilun Fan.
>
> On Wed, Feb 18, 2026 at 1:52 PM Chris Nauroth <[email protected]> wrote:
>
> > I'll be away the rest of this week, but I'm planning to create a 3.5.0 RC
> > as soon as I get back the week of 2/23.
> >
> > I'm also nearly done verifying the new 3.4.3 RC, just waiting on a few
> more
> > tests.
> >
> > Chris Nauroth
> >
> >
> > On Mon, Feb 16, 2026 at 4:14 PM Chris Nauroth <[email protected]>
> wrote:
> >
> > > At this point, I think these are just extremely flaky tests. I've tried
> > > numerous git bisect exercises to pinpoint specific commits. No matter
> > > what I do though, I never see a consistent pass or a consistent fail.
> > >
> > > Patches are welcome to stabilize the tests, but I won't treat these as
> > > release 3.5.0 blockers unless I hear otherwise.
> > >
> > > Chris Nauroth
> > >
> > >
> > > On Fri, Feb 13, 2026 at 3:05 PM Chris Nauroth <[email protected]>
> > wrote:
> > >
> > >> So far I haven't been able to connect these test failures to any
> > specific
> > >> commits. I reverted my local copy all the way back to July, and the
> > tests
> > >> still failed. Maybe this is more like some ticking time bomb that's
> been
> > >> present in the code for a long time rather than a recently introduced
> > bug.
> > >>
> > >> YARN-11926 reports some bad test data (old timestamps). That might
> > >> partially explain it.
> > >>
> > >> Chris Nauroth
> > >>
> > >>
> > >> On Fri, Feb 13, 2026 at 10:18 AM Steve Loughran <[email protected]>
> > >> wrote:
> > >>
> > >>> Thanks everyone. I've got the 3.4.3 RC1 done but going to play with
> it
> > >>> myself over the weekend.
> > >>>
> > >>> I made the mistake of trying to get google gemini cli to write a test
> > in
> > >>> a
> > >>> two class project  while doing the build and now need to lie down
> > rather
> > >>> than look at an IDE
> > >>>
> > >>> " My apologies for neglecting GEMINI.md guidelines. I must revert
> > >>> System.out.println and SLF4J logging, and remove reflection-based
> > >>> injection
> > >>> from TestCatalogSigner.java. My focus will now be on understanding
> why
> > >>>   S3V4RestSignerClient.create(props) returns null without Mockito or
> > >>> reflection, potentially rethinking the test approach if a non-null
> > >>> instance
> > >>> is impossible without a live service. Starting with restoring SLF4J
> > >>>   logging in CatalogSigner.java."
> > >>>
> > >>>
> > >>>
> > >>> On Fri, 13 Feb 2026 at 10:37, Xiaoqiao He <[email protected]>
> > wrote:
> > >>>
> > >>> > Thank you both for the great work. About test failure
> #TestDFSAdmin,
> > it
> > >>> > looks that
> > >>> > this thread[1] does not finish as expected, but I did not dig where
> > >>> code
> > >>> > changes
> > >>> > trigger this failure now. It should be fixed or marked before
> > release.
> > >>> > Thanks again.
> > >>> >
> > >>> > [1]
> > >>> >
> > >>> >
> > >>>
> >
> https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/tools/TestDFSAdmin.java#L1254
> > >>> >
> > >>> > Best Regards,
> > >>> > - He Xiaoqiao
> > >>> >
> > >>> > On Fri, Feb 13, 2026 at 1:42 PM Chris Nauroth <[email protected]
> >
> > >>> wrote:
> > >>> >
> > >>> > > Awesome, I appreciate your help! I'll keep investigating the
> > >>> remaining
> > >>> > > issues.
> > >>> > >
> > >>> > > Chris Nauroth
> > >>> > >
> > >>> > >
> > >>> > > On Thu, Feb 12, 2026 at 4:26 PM slfan1989 <[email protected]>
> > >>> wrote:
> > >>> > >
> > >>> > > > Hi Chris,
> > >>> > > >
> > >>> > > > Thanks for driving the Hadoop 3.5.0 release forward.
> > >>> > > >
> > >>> > > > +1 from me on HADOOP-19811 / PR #8243.
> > >>> > > >
> > >>> > > > I’ll also take a look at the current trunk test failures,
> > >>> especially
> > >>> > the
> > >>> > > > YARN-related unit test failures, and report back with findings
> > or a
> > >>> > > > proposed fix if I can identify the cause.
> > >>> > > >
> > >>> > > > I’ll have good availability over the next two weeks, so feel
> free
> > >>> to
> > >>> > tag
> > >>> > > me
> > >>> > > > on any follow-ups where I can help.
> > >>> > > >
> > >>> > > > Best Regards,
> > >>> > > >
> > >>> > > > Shilun Fan
> > >>> > > >
> > >>> > > > On Fri, Feb 13, 2026 at 6:33 AM Chris Nauroth <
> > [email protected]
> > >>> >
> > >>> > > wrote:
> > >>> > > >
> > >>> > > > > Hello everyone,
> > >>> > > > >
> > >>> > > > > I have bulk-moved remaining open 3.5.0 JIRA issues into a new
> > >>> 3.5.1
> > >>> > > > > release.
> > >>> > > > >
> > >>> > > > > We have one remaining 3.5.0 blocker: HADOOP-19811. This has a
> > fix
> > >>> > > > available
> > >>> > > > > and a non-binding +1.
> > >>> > > > >
> > >>> > > > > https://github.com/apache/hadoop/pull/8243
> > >>> > > > >
> > >>> > > > > Once a committer approves this, I'll proceed with branching
> and
> > >>> the
> > >>> > > rest
> > >>> > > > of
> > >>> > > > > the release process.
> > >>> > > > >
> > >>> > > > > We seem to have some test failures on trunk at the moment:
> > >>> > > > >
> > >>> > > > >
> > >>> https://github.com/apache/hadoop/pull/8237#issuecomment-3891386033
> > >>> > > > >
> > >>> > > > > I haven't had a chance to investigate the cause yet, so I
> don't
> > >>> know
> > >>> > if
> > >>> > > > > these are going to be blockers. Any help there would be
> > >>> appreciated.
> > >>> > > > >
> > >>> > > > > Chris Nauroth
> > >>> > > > >
> > >>> > > >
> > >>> > >
> > >>> >
> > >>>
> > >>
> >
>

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