Nikolay, Thanks for the details. How about enforcing JDK 8 for the Spark integration in general and run its tests on the VM only? We'll do this until Spark community fully support JDK 11+.
As for Spark 2.4.0 module [1], how about releasing Ignite 2.7.7 with Spark related changes only? As long as Ignite modularization is a long process, we can follow your advice and create two more modules ignite_spark_24 and ignite_spark_25 . Plus Alexey is working on extra Spark improvements. [1] https://issues.apache.org/jira/browse/IGNITE-12054 - Denis On Thu, Sep 19, 2019 at 11:58 PM Nikolay Izhikov <nizhi...@apache.org> wrote: > Hello, Denis. > > Spark uses Scala 2.11 [1] > Scala 2.11 compatible with the jdk version described on [2]. > > Few notes from the link: > > > We recommend using Java 8 for compiling Scala code > > JDK 11 compatibility notes > > As of Scala 2.13.0, 2.12.8 and 2.11.12, JDK 11 support is incomplete > > I also got several issues with the Spark itself when trying to run it on > the Java 11. > Please, take a look at [3], [4] > > All in all, with the spark 2.3 we should stay on java8 to get things > worked. > > [1] http://spark.apache.org/docs/2.4.0/ > [2] https://docs.scala-lang.org/overviews/jdk-compatibility/overview.html > [3] > > https://stackoverflow.com/questions/49961991/java-lang-illegalargumentexception-at-org-apache-xbean-asm5-classreader-initu?noredirect=1&lq=1 > [4] > > https://stackoverflow.com/questions/51352591/spark-java-illegalargumentexception-at-org-apache-xbean-asm5-classreader > > > чт, 19 сент. 2019 г. в 21:39, Denis Magda <dma...@apache.org>: > > > Nikolay, > > > > What needs to be done to ensure Java 9++ works with Spark Examples? Do we > > need to create another Spark module or drop some scala version? > > > > - > > Denis > > > > > > On Thu, Sep 19, 2019 at 9:23 AM Nikolay Izhikov <nizhi...@apache.org> > > wrote: > > > > > Hello, Igniters. > > > > > > Examples suite on TC doesn't work correctly under java9+. [1], [2] > > > > > > The reason is the Spark examples. > > > > > > Spark 2.3(our current version) work with scala 2.11 and scala 2.11 > > support > > > of java9+ is "incomplete". > > > > > > Can we stick example suite to jdk8 only? > > > > > > [1] > > > > > > https://ci.ignite.apache.org/viewLog.html?buildId=4610507&buildTypeId=IgniteTests24Java8_Examples > > > [2] > > > > > > https://ci.ignite.apache.org/viewLog.html?buildId=4609013&buildTypeId=IgniteTests24Java8_Examples > > > > > >
