Thank you for testing, Sean and Herman.

There are three reporting until now.

1. SPARK-28775 is for JDK 8u221+ testing at Apache Spark 3.0/2.4/2.3.
2. SPARK-28749 is for Scala 2.12 Python testing at Apache Spark 2.4 only.
3. SPARK-28699 is for disabling radix sort for ShuffleExchangeExec at Apache Spark 3.0/2.4/2.3.

Both (1) and (2) are nice-to-have and test-only fixes. (3) could be a correctness issue, but it seems that there are some other approaches.
I'm monitoring all reports. Let's see. For now, I'd like to continue 2.4.4 RC1 voting for more testing.

Bests,
Dongjoon.


On Mon, Aug 19, 2019 at 2:09 PM Herman van Hovell <herman@databricks.com> wrote:
The error you are seeing is caused by https://issues.apache.org/jira/browse/SPARK-28775.


On Mon, Aug 19, 2019 at 10:40 PM Sean Owen <srowen@apache.org> wrote:
Things are looking pretty good so far, but a few notes:

I thought we might need this PR to make the 2.12 build of 2.4.x not
try to build Kafka 0.8 support, but, I'm not seeing that 2.4.x + 2.12
builds or tests it?
https://github.com/apache/spark/pull/25482
I can merge this to 2.4 shortly anyway, but not clear it affects the RC.


I'm getting one weird failure in tests:

- daysToMillis and millisToDays *** FAILED ***
  8634 did not equal 8633 Round trip of 8633 did not work in tz
sun.util.calendar.ZoneInfo[id="Kwajalein",offset=43200000,dstSavings=0,useDaylight=false,transitions=8,lastRule=null]
(DateTimeUtilsSuite.scala:683)

See https://github.com/apache/spark/pull/19234#pullrequestreview-64463435
for some context and
https://github.com/apache/spark/commit/c5b8d54c61780af6e9e157e6c855718df972efad
for a fix for a similar type of issue.

This may be quite specific to a particular version of Java 8, but I'm
testing on the latest (1.8.0_222). We can 'patch' it by allowing for
multiple correct answers here.
It may not hold up the RC unless others see the failure, but I can
work on that anyway.

On Mon, Aug 19, 2019 at 11:55 AM Dongjoon Hyun <dongjoon.hyun@gmail.com> wrote:
>
> Please vote on releasing the following candidate as Apache Spark version 2.4.4.
>
> The vote is open until August 22nd 10AM PST and passes if a majority +1 PMC votes are cast, with a minimum of 3 +1 votes.
>
> [ ] +1 Release this package as Apache Spark 2.4.4
> [ ] -1 Do not release this package because ...
>
> To learn more about Apache Spark, please see http://spark.apache.org/
>
> The tag to be voted on is v2.4.4-rc1 (commit 13f2465c6c8328e988f7215ee5f5d2c5e69e8d21):
> https://github.com/apache/spark/tree/v2.4.4-rc1
>
> The release files, including signatures, digests, etc. can be found at:
> https://dist.apache.org/repos/dist/dev/spark/v2.4.4-rc1-bin/
>
> Signatures used for Spark RCs can be found in this file:
> https://dist.apache.org/repos/dist/dev/spark/KEYS
>
> The staging repository for this release can be found at:
> https://repository.apache.org/content/repositories/orgapachespark-1326/
>
> The documentation corresponding to this release can be found at:
> https://dist.apache.org/repos/dist/dev/spark/v2.4.4-rc1-docs/
>
> The list of bug fixes going into 2.4.4 can be found at the following URL:
> https://issues.apache.org/jira/projects/SPARK/versions/12345466
>
> This release is using the release script of the tag v2.4.4-rc1.
>
> FAQ
>
> =========================
> How can I help test this release?
> =========================
>
> If you are a Spark user, you can help us test this release by taking
> an existing Spark workload and running on this release candidate, then
> reporting any regressions.
>
> If you're working in PySpark you can set up a virtual env and install
> the current RC and see if anything important breaks, in the Java/Scala
> you can add the staging repository to your projects resolvers and test
> with the RC (make sure to clean up the artifact cache before/after so
> you don't end up building with a out of date RC going forward).
>
> ===========================================
> What should happen to JIRA tickets still targeting 2.4.4?
> ===========================================
>
> The current list of open tickets targeted at 2.4.4 can be found at:
> https://issues.apache.org/jira/projects/SPARK and search for "Target Version/s" = 2.4.4
>
> Committers should look at those and triage. Extremely important bug
> fixes, documentation, and API tweaks that impact compatibility should
> be worked on immediately. Everything else please retarget to an
> appropriate release.
>
> ==================
> But my bug isn't fixed?
> ==================
>
> In order to make timely releases, we will typically not hold the
> release unless the bug in question is a regression from the previous
> release. That being said, if there is something which is a regression
> that has not been correctly targeted please ping me or a committer to
> help target the issue.

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