Hi vino, Yes, I’m trying to set Java 8 environment for Flink job, but YARN is running on Java 7 which I can’t change.
I find the solution in the mail list you referred to. It turns out that I was using a wrong key to set Java home for the jobmanager, and the right key should be “containerized.master.env.JAVA_HOME”. Thank you very much! Best, Paul Lam > 在 2018年8月30日，10:09，vino yang <yanghua1...@gmail.com> 写道： > > Hi Paul, > > This exception means that the jdk version of the execution code is lower than > the compiled jdk version. > 52 means that the JDK version that compiles it is 1.8. > There is information that Flink 1.4 has removed support for Java 7, so your > current best choice is to use JDK 1.8.[1] > > [1]: > http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Flink-1-4-0-can-not-override-JAVA-HOME-for-single-job-deployment-on-YARN-td17265.html > > <http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Flink-1-4-0-can-not-override-JAVA-HOME-for-single-job-deployment-on-YARN-td17265.html> > > Thanks, vino. > > Paul Lam <paullin3...@gmail.com <mailto:paullin3...@gmail.com>> 于2018年8月30日周四 > 上午9:58写道： > Hi vino, > > Thanks for your suggestion. I believe it’s working. But I still get this > exception in jobmanager.err: > > > java.lang.UnsupportedClassVersionError: > > org/apache/flink/yarn/entrypoint/YarnSessionClusterEntrypoint : Unsupported > > major.minor version 52.0 > > I tried setting Java home for the jobmanager too, but it doesn’t help. > > Do you have any idea on this? Thanks a lot! > > Best, > Paul Lam > > >> 在 2018年8月29日，16:08，vino yang <yanghua1...@gmail.com >> <mailto:yanghua1...@gmail.com>> 写道： >> >> Hi Paul, >> >> You can try: -yD yarn.taskmanager.env.JAVA_HOME=xx in the command line. >> >> Thanks, vino. >> >> Paul Lam <paullin3...@gmail.com <mailto:paullin3...@gmail.com>> >> 于2018年8月29日周三 下午3:27写道： >> Hi, >> >> I’m trying to run Flink on a YARN cluster that’s running on JDK 7, and I >> think it’s a quite common scenario, but it seems that currently there’s no >> way to pass the JAVA_HOME environment variable to YARN. >> >> Am I missing something? And should I create an issue requesting for that? >> >> Best, >> Paul Lam >
