Hi all, Being adventurous I have built the RC1 code with:
-Pyarn -Phadoop-3.2 -Pyarn -Phadoop-cloud -Phive-thriftserver -Phive-2.3 -Pscala-2.13 -Dhadoop.version=3.2.2 And then attempted to build my Java based spark application. However, I found a number of our unit tests were failing with: java.lang.NoClassDefFoundError: scala/collection/parallel/TaskSupport at org.apache.spark.SparkContext.$anonfun$union$1(SparkContext.scala:1412) at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151) at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:112) at org.apache.spark.SparkContext.withScope(SparkContext.scala:789) at org.apache.spark.SparkContext.union(SparkContext.scala:1406) at org.apache.spark.sql.execution.UnionExec.doExecute(basicPhysicalOperators.scala:698) at org.apache.spark.sql.execution.SparkPlan.$anonfun$execute$1(SparkPlan.scala:184) … I tracked this down to a missing dependency: <dependency> <groupId>org.scala-lang.modules</groupId> <artifactId>scala-parallel-collections_${scala.binary.version}</artifactId> </dependency> which unfortunately appears only in a profile in the pom files associated with the various spark dependencies. As far as I know it is not possible to activate profiles in dependencies in maven builds. Therefore I suspect that right now a Scala 2.13 migration is not quite as seamless as we would like. I stress that this is only an issue for developers that write unit tests for their applications, as the Spark runtime environment will always have the necessary dependencies available to it. (You might consider upgrading the org.scala-lang.modules:scala-parallel-collections_2.13 version from 0.2 to 1.0.3 though!) Cheers and thanks for the great work! Steve Coy On 21 Aug 2021, at 3:05 am, Gengliang Wang <ltn...@gmail.com<mailto:ltn...@gmail.com>> wrote: Please vote on releasing the following candidate as Apache Spark version 3.2.0. The vote is open until 11:59pm Pacific time Aug 25 and passes if a majority +1 PMC votes are cast, with a minimum of 3 +1 votes. [ ] +1 Release this package as Apache Spark 3.2.0 [ ] -1 Do not release this package because ... To learn more about Apache Spark, please see http://spark.apache.org/<https://aus01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fspark.apache.org%2F&data=04%7C01%7Cscoy%40infomedia.com.au%7Cf676c41192834098897808d963fcb4ef%7C45d5407150f849caa59f9457123dc71c%7C0%7C0%7C637650759290514217%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=tRzO7nKQVesUseTOnoRJCMiAKyp16rLb%2Fg%2B5BOhjqg0%3D&reserved=0> The tag to be voted on is v3.2.0-rc1 (commit 6bb3523d8e838bd2082fb90d7f3741339245c044): https://github.com/apache/spark/tree/v3.2.0-rc1<https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fapache%2Fspark%2Ftree%2Fv3.2.0-rc1&data=04%7C01%7Cscoy%40infomedia.com.au%7Cf676c41192834098897808d963fcb4ef%7C45d5407150f849caa59f9457123dc71c%7C0%7C0%7C637650759290514217%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=4EDuJ10nFx207Jlu0%2BNguWYJlDFqjvZ8QP%2F6CSMIEBw%3D&reserved=0> The release files, including signatures, digests, etc. can be found at: https://dist.apache.org/repos/dist/dev/spark/v3.2.0-rc1-bin/<https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdist.apache.org%2Frepos%2Fdist%2Fdev%2Fspark%2Fv3.2.0-rc1-bin%2F&data=04%7C01%7Cscoy%40infomedia.com.au%7Cf676c41192834098897808d963fcb4ef%7C45d5407150f849caa59f9457123dc71c%7C0%7C0%7C637650759290514217%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=6u3eFtvqwg2OMIoHuGMbXipY7EQcM19o8XtOAh7x780%3D&reserved=0> Signatures used for Spark RCs can be found in this file: https://dist.apache.org/repos/dist/dev/spark/KEYS<https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdist.apache.org%2Frepos%2Fdist%2Fdev%2Fspark%2FKEYS&data=04%7C01%7Cscoy%40infomedia.com.au%7Cf676c41192834098897808d963fcb4ef%7C45d5407150f849caa59f9457123dc71c%7C0%7C0%7C637650759290524176%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=0NX5zVjQrDuPILwj8YQVLksgFy%2FAKaIoykDwgDGzwUQ%3D&reserved=0> The staging repository for this release can be found at: https://repository.apache.org/content/repositories/orgapachespark-1388<https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Frepository.apache.org%2Fcontent%2Frepositories%2Forgapachespark-1388&data=04%7C01%7Cscoy%40infomedia.com.au%7Cf676c41192834098897808d963fcb4ef%7C45d5407150f849caa59f9457123dc71c%7C0%7C0%7C637650759290524176%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=mmUik7UyysNyxZqTAlJsO28Bj%2B62x%2FuW%2FXSBvCht4dk%3D&reserved=0> The documentation corresponding to this release can be found at: https://dist.apache.org/repos/dist/dev/spark/v3.2.0-rc1-docs/<https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdist.apache.org%2Frepos%2Fdist%2Fdev%2Fspark%2Fv3.2.0-rc1-docs%2F&data=04%7C01%7Cscoy%40infomedia.com.au%7Cf676c41192834098897808d963fcb4ef%7C45d5407150f849caa59f9457123dc71c%7C0%7C0%7C637650759290534129%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=Iag8tq2yIdHITE%2FfQPdGTMZ%2BXHS0RQt%2FwF%2F3%2Bcc%2Fl84%3D&reserved=0> The list of bug fixes going into 3.2.0 can be found at the following URL: https://issues.apache.org/jira/projects/SPARK/versions/12349407 <https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fissues.apache.org%2Fjira%2Fprojects%2FSPARK%2Fversions%2F12349407&data=04%7C01%7Cscoy%40infomedia.com.au%7Cf676c41192834098897808d963fcb4ef%7C45d5407150f849caa59f9457123dc71c%7C0%7C0%7C637650759290534129%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=ryp%2F9z%2B%2B2aKB%2BVlIkg5lJJ4jsDjo0Vkz6lnU46uIrSI%3D&reserved=0> This release is using the release script of the tag v3.2.0-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 3.2.0? =========================================== The current list of open tickets targeted at 3.2.0 can be found at: https://issues.apache.org/jira/projects/SPARK<https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fissues.apache.org%2Fjira%2Fprojects%2FSPARK&data=04%7C01%7Cscoy%40infomedia.com.au%7Cf676c41192834098897808d963fcb4ef%7C45d5407150f849caa59f9457123dc71c%7C0%7C0%7C637650759290534129%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=TjqglKWehxJXPstSkJuJ5GdTynwQ8nt9Llawr1ZyDIM%3D&reserved=0> and search for "Target Version/s" = 3.2.0 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. This email contains confidential information of and is the copyright of Infomedia. It must not be forwarded, amended or disclosed without consent of the sender. If you received this message by mistake, please advise the sender and delete all copies. Security of transmission on the internet cannot be guaranteed, could be infected, intercepted, or corrupted and you should ensure you have suitable antivirus protection in place. 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