状态恢复和重启策略

手动重启并恢复
1.把程序打包

2.启动Flink集群(本地单机版，集群版都可以)

/export/server/flink/bin/start-cluster.sh

3.访问webUI

http://node1.itcast.cn:8081/#/overview

4.使用FlinkWebUI提交

cn.itcast.flink.checkpoint.StreamCheckpointDemo
hdfs://node1.itcast.cn:8020/flink-checkpoint/checkpoint

5.取消任务

6.重新启动任务并指定从哪恢复

cn.itcast.flink.checkpoint.StreamCheckpointDemo
hdfs://node1.itcast.cn:8020/flink-checkpoint/checkpoint
hdfs://node1.itcast.cn:8020/flink-checkpoint/checkpoint/aedbaa962fc720954651d27d95fcb53f/chk-106

7.最后关闭/取消任务