flink使用检查点时，保存在hdfs上的路径，导致报错
Could not find a file system implementation for scheme 'hdfs'. The scheme is not directly supported by Flink and no Hadoop file system to support this scheme could be loaded.
flink安装路径lib下面缺少jar包
将上面的jar包导到lib下，重新启动即可
jar下载路径：Apache Flink: Downloads
