Scala 2.12 is not yet supported on Spark - this means also not JDK9: https://issues.apache.org/jira/plugins/servlet/mobile#issue/SPARK-14220
If you look at the Oracle support then jdk 9 is anyway only supported for 6 months. JDK 8 is Lts (5 years) JDK 18.3 will be only 6 months and JDK 18.9 is lts (5 years). http://www.oracle.com/technetwork/java/eol-135779.html I do not think Spark should support non-lts releases. Especially for JDK9 I do not see a strong technical need, but maybe I am overlooking something. Of course http2 etc would be nice for the web interfaces, but currently not very urgent. > On 27. Oct 2017, at 04:44, Zhang, Liyun <liyun.zh...@intel.com> wrote: > > Thanks your suggestion, seems that scala 2.12.4 support jdk9 > > Scala 2.12.4 is now available. > > Our benchmarks show a further reduction in compile times since 2.12.3 of > 5-10%. > > Improved Java 9 friendliness, with more to come! > > > Best Regards > Kelly Zhang/Zhang,Liyun > > > > > > From: Reynold Xin [mailto:r...@databricks.com] > Sent: Friday, October 27, 2017 10:26 AM > To: Zhang, Liyun <liyun.zh...@intel.com>; dev@spark.apache.org; > u...@spark.apache.org > Subject: Re: Anyone knows how to build and spark on jdk9? > > It probably depends on the Scala version we use in Spark supporting Java 9 > first. > > On Thu, Oct 26, 2017 at 7:22 PM Zhang, Liyun <liyun.zh...@intel.com> wrote: > Hi all: > 1. I want to build spark on jdk9 and test it with Hadoop on jdk9 env. I > search for jiras related to JDK9. I only found SPARK-13278. This means now > spark can build or run successfully on JDK9 ? > > > Best Regards > Kelly Zhang/Zhang,Liyun >
