Hi, are you running Flink in an JRE >= 8? We dropped Java 7 support for Flink 1.4.
Nico On 14/12/17 12:35, 杨光 wrote: > Hi, > I am usring flink single-job mode on YARN. After i upgrade flink > verson from 1.3.2 to 1.4.0, the parameter > "yarn.taskmanager.env.JAVA_HOME" doesn’t work as before. > I can only found error log on yarn like this: > > Exception in thread "main" java.lang.UnsupportedClassVersionError: > org/apache/flink/yarn/YarnApplicationMasterRunner : Unsupported > major.minor version 52.0 > at java.lang.ClassLoader.defineClass1(Native Method) > at java.lang.ClassLoader.defineClass(ClassLoader.java:800) > at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) > at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) > at java.net.URLClassLoader.access$100(URLClassLoader.java:71) > at java.net.URLClassLoader$1.run(URLClassLoader.java:361) > at java.net.URLClassLoader$1.run(URLClassLoader.java:355) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:354) > at java.lang.ClassLoader.loadClass(ClassLoader.java:425) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) > at java.lang.ClassLoader.loadClass(ClassLoader.java:358) > at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) > > Is there something different i should know to avoid this problem ? > Thanks! >
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