可能是你没有设置 HADOOP_CLASSPATH 参考 https://flink.apache.org/downloads.html 本页面最上部分
If you plan to use Apache Flink together with Apache Hadoop (run Flink on YARN, connect to HDFS, connect to HBase, or use some Hadoop-based file system connector) then select the download that bundles the matching Hadoop version, download the optional pre-bundled Hadoop that matches your version and place it in the lib folder of Flink, or export your HADOOP_CLASSPATH <https://ci.apache.org/projects/flink/flink-docs-stable/ops/deployment/hadoop.html> Best, tison. 李军 <hold_li...@163.com> 于2019年11月18日周一 下午4:31写道： > 启动命令: ./bin/yarn-session.sh -n 2 -jm 1024 -tm 1024 > 报错：Error: Could not find or load main class > org.apache.flink.yarn.cli.FlinkYarnSessionCli > > > ResourceManager，NodeManager都已启动。
