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 > > >
