日志里说得比较清楚了，classpath 里没有 Hadoop 的 lib。可以参考这个文档 [1] 来配置你的环境。
1. https://ci.apache.org/projects/flink/flink-docs-release-1.11/ops/deployment/hadoop.html <https://ci.apache.org/projects/flink/flink-docs-release-1.11/ops/deployment/hadoop.html> Best, Paul Lam > 2020年7月16日 15:46，Rainie Li <[email protected]> 写道： > > 大佬们好，我是flink新手，正在用flink 1.9.1 > Flink APP cannot run, APP log error, 想求教一下会是什么原因造成的，多谢🙏 > > 2020-06-16 17:06:21,921 WARN org.apache.flink.client.cli.CliFrontend > - Could not load CLI class > org.apache.flink.yarn.cli.FlinkYarnSessionCli. > java.lang.NoClassDefFoundError: > org/apache/hadoop/yarn/exceptions/YarnException > at java.lang.Class.forName0(Native Method) > at java.lang.Class.forName(Class.java:264) > at > org.apache.flink.client.cli.CliFrontend.loadCustomCommandLine(CliFrontend.java:1185) > at > org.apache.flink.client.cli.CliFrontend.loadCustomCommandLines(CliFrontend.java:1145) > at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1070) > Caused by: java.lang.ClassNotFoundException: > org.apache.hadoop.yarn.exceptions.YarnException > at java.net.URLClassLoader.findClass(URLClassLoader.java:382) > at java.lang.ClassLoader.loadClass(ClassLoader.java:424) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) > at java.lang.ClassLoader.loadClass(ClassLoader.java:357) > ... 5 more > 2020-06-16 17:06:21,980 INFO org.apache.flink.core.fs.FileSystem > - Hadoop is not in the classpath/dependencies. The extended > set of supported File Systems via Hadoop is not available.
