-1. We have two correctness bugs:
https://issues.apache.org/jira/browse/SPARK-25714 and
https://issues.apache.org/jira/browse/SPARK-25708.

Let us fix all the three issues in ScalaUDF, as mentioned by Sean.

Xiao


Sean Owen <sro...@apache.org> 于2018年10月11日周四 上午9:04写道:

> This is a legitimate question about the behavior of ScalaUDF after the
> change to support 2.12:
> https://github.com/apache/spark/pull/22259#discussion_r224295469
> Not quite a blocker I think, but a potential gotcha we definitely need
> to highlight in release notes. There may be an argument for changing
> ScalaUDF again before the release. Have a look, anyone familiar with
> catalyst.
> On Wed, Oct 10, 2018 at 3:00 PM Sean Owen <sro...@apache.org> wrote:
> >
> > +1. I tested the source build against Scala 2.12 and common build
> > profiles. License and sigs look OK.
> >
> > No blockers; one critical:
> >
> > SPARK-25378 ArrayData.toArray(StringType) assume UTF8String in 2.4
> >
> > I think this one is "won't fix" though? not trying to restore the
> behavior?
> >
> > Other items open for 2.4.0:
> >
> > SPARK-25347 Document image data source in doc site
> > SPARK-25584 Document libsvm data source in doc site
> > SPARK-25179 Document the features that require Pyarrow 0.10
> > SPARK-25507 Update documents for the new features in 2.4 release
> > SPARK-25346 Document Spark builtin data sources
> > SPARK-24464 Unit tests for MLlib's Instrumentation
> > SPARK-23197 Flaky test:
> spark.streaming.ReceiverSuite."receiver_life_cycle"
> > SPARK-22809 pyspark is sensitive to imports with dots
> > SPARK-21030 extend hint syntax to support any expression for Python and R
> >
> > Anyone know enough to close or retarget them? they don't look critical
> > for 2.4, SPARK-25507 has no content, itself. SPARK-25179 "Document the
> > features that require Pyarrow 0.10" however sounds like it could have
> > been important for 2.4? if not a blocker.
> >
> > PS I don't think that SPARK-25150 is an issue; see JIRA. At least
> > there is some ongoing discussion there.
> >
> > I am evaluating
> > https://github.com/apache/spark/pull/22259#discussion_r224252642 right
> > now.
> >
> >
> > On Wed, Oct 10, 2018 at 9:47 AM Wenchen Fan <cloud0...@gmail.com> wrote:
> > >
> > > Please vote on releasing the following candidate as Apache Spark
> version 2.4.0.
> > >
> > > The vote is open until October 1 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 2.4.0
> > > [ ] -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 v2.4.0-rc3 (commit
> 8e4a99bd201b9204fec52580f19ae70a229ed94e):
> > > https://github.com/apache/spark/tree/v2.4.0-rc3
> > >
> > > The release files, including signatures, digests, etc. can be found at:
> > > https://dist.apache.org/repos/dist/dev/spark/v2.4.0-rc3-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-1289
> > >
> > > The documentation corresponding to this release can be found at:
> > > https://dist.apache.org/repos/dist/dev/spark/v2.4.0-rc3-docs/
> > >
> > > The list of bug fixes going into 2.4.0 can be found at the following
> URL:
> > > https://issues.apache.org/jira/projects/SPARK/versions/12342385
> > >
> > > 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 2.4.0?
> > > ===========================================
> > >
> > > The current list of open tickets targeted at 2.4.0 can be found at:
> > > https://issues.apache.org/jira/projects/SPARK and search for "Target
> Version/s" = 2.4.0
> > >
> > > 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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