场景：flink1.14.0 通过restApi操作flink集群（standalone），能力有限，目前的项目使用Flink比较原始
官网的restapi文档真的写的一塌糊涂，传参和返回结果示例，请求路径（占位符用冒号表示），明显不是搞web项目的人写的
这里只记录几个重要的，以及常用的，flink webUI上可以直接进行各种操作，只要这上面有的，restApi都支持，就是界面比较技术化
官网地址：
https://nightlies.apache.org/flink/flink-docs-release-1.14/docs/ops/rest_api/
1、提交一个job
2、取消一个job
3、重启一个job
GET /jobs/<jobId>/checkpoints
返回示例：（json格式）
{"counts":{"restored":0,"total":25616,"in_progress":0,"completed":25616,"Failed":0},"summary":{"state_size":{"min":5911,"max":6375,"avg":6033,"p50":6027.0,"p90":6027.0,"p95":6027.0,"p99":6027.0,"p999":6027.0},"end_to_end_duration":{"min":3,"max":548,"avg":6,"p50":5.0,"p90":6.0,"p95":9.0,"p99":12.0,"p999":44.999000000001615},"alignment_buffered":{"min":0,"max":0,"avg":0,"p50":0.0,"p90":0.0,"p95":0.0,"p99":0.0,"p999":0.0},"processed_data":{"min":0,"max":0,"avg":0,"p50":0.0,"p90":0.0,"p95":0.0,"p99":0.0,"p999":0.0},"persisted_data":{"min":0,"max":0,"avg":0,"p50":0.0,"p90":0.0,"p95":0.0,"p99":0.0,"p999":0.0}},"latest":{"completed":{"@class":"completed","id":25616,"status":"COMPLETED","is_savepoint":false,"trigger_timestamp":1648188076643,"latest_ack_timestamp":1648188076648,"state_size":6027,"end_to_end_duration":5,"alignment_buffered":0,"processed_data":0,"persisted_data":0,"num_subtasks":3,"num_ackNowledged_subtasks":3,"checkpoint_type":"CHECKPOINT","tasks":{},"external_path":"file:/opt/hikvision/idatafusion/flink-1.14.0/local-checkpoints/3560f8db528b3fb640e2b5a7db89af2d/chk-25616","discarded":false},"savepoint":null,"Failed":null,"restored":null},"history":[{"@class":"completed","id":25616,"status":"COMPLETED","is_savepoint":false,"trigger_timestamp":1648188076643,"latest_ack_timestamp":1648188076648,"state_size":6027,"end_to_end_duration":5,"alignment_buffered":0,"processed_data":0,"persisted_data":0,"num_subtasks":3,"num_ackNowledged_subtasks":3,"checkpoint_type":"CHECKPOINT","tasks":{},"external_path":"file:/opt/hikvision/idatafusion/flink-1.14.0/local-checkpoints/3560f8db528b3fb640e2b5a7db89af2d/chk-25616","discarded":false},{"@class":"completed","id":25615,"status":"COMPLETED","is_savepoint":false,"trigger_timestamp":1648188016643,"latest_ack_timestamp":1648188016649,"state_size":6027,"end_to_end_duration":6,"alignment_buffered":0,"processed_data":0,"persisted_data":0,"num_subtasks":3,"num_ackNowledged_subtasks":3,"checkpoint_type":"CHECKPOINT","tasks":{},"external_path":"file:/opt/hikvision/idatafusion/flink-1.14.0/local-checkpoints/3560f8db528b3fb640e2b5a7db89af2d/chk-25615","discarded":true},{"@class":"completed","id":25614,"status":"COMPLETED","is_savepoint":false,"trigger_timestamp":1648187956643,"latest_ack_timestamp":1648187956649,"state_size":6027,"end_to_end_duration":6,"alignment_buffered":0,"processed_data":0,"persisted_data":0,"num_subtasks":3,"num_ackNowledged_subtasks":3,"checkpoint_type":"CHECKPOINT","tasks":{},"external_path":"file:/opt/hikvision/idatafusion/flink-1.14.0/local-checkpoints/3560f8db528b3fb640e2b5a7db89af2d/chk-25614","discarded":true},{"@class":"completed","id":25613,"status":"COMPLETED","is_savepoint":false,"trigger_timestamp":1648187896643,"latest_ack_timestamp":1648187896656,"state_size":6027,"end_to_end_duration":13,"alignment_buffered":0,"processed_data":0,"persisted_data":0,"num_subtasks":3,"num_ackNowledged_subtasks":3,"checkpoint_type":"CHECKPOINT","tasks":{},"external_path":"file:/opt/hikvision/idatafusion/flink-1.14.0/local-checkpoints/3560f8db528b3fb640e2b5a7db89af2d/chk-25613","discarded":true},{"@class":"completed","id":25612,"status":"COMPLETED","is_savepoint":false,"trigger_timestamp":1648187836643,"latest_ack_timestamp":1648187836648,"state_size":6027,"end_to_end_duration":5,"alignment_buffered":0,"processed_data":0,"persisted_data":0,"num_subtasks":3,"num_ackNowledged_subtasks":3,"checkpoint_type":"CHECKPOINT","tasks":{},"external_path":"file:/opt/hikvision/idatafusion/flink-1.14.0/local-checkpoints/3560f8db528b3fb640e2b5a7db89af2d/chk-25612","discarded":true},{"@class":"completed","id":25611,"status":"COMPLETED","is_savepoint":false,"trigger_timestamp":1648187776643,"latest_ack_timestamp":1648187776648,"state_size":6027,"end_to_end_duration":5,"alignment_buffered":0,"processed_data":0,"persisted_data":0,"num_subtasks":3,"num_ackNowledged_subtasks":3,"checkpoint_type":"CHECKPOINT","tasks":{},"external_path":"file:/opt/hikvision/idatafusion/flink-1.14.0/local-checkpoints/3560f8db528b3fb640e2b5a7db89af2d/chk-25611","discarded":true},{"@class":"completed","id":25610,"status":"COMPLETED","is_savepoint":false,"trigger_timestamp":1648187716643,"latest_ack_timestamp":1648187716649,"state_size":6027,"end_to_end_duration":6,"alignment_buffered":0,"processed_data":0,"persisted_data":0,"num_subtasks":3,"num_ackNowledged_subtasks":3,"checkpoint_type":"CHECKPOINT","tasks":{},"external_path":"file:/opt/hikvision/idatafusion/flink-1.14.0/local-checkpoints/3560f8db528b3fb640e2b5a7db89af2d/chk-25610","discarded":true},{"@class":"completed","id":25609,"status":"COMPLETED","is_savepoint":false,"trigger_timestamp":1648187656643,"latest_ack_timestamp":1648187656649,"state_size":6027,"end_to_end_duration":6,"alignment_buffered":0,"processed_data":0,"persisted_data":0,"num_subtasks":3,"num_ackNowledged_subtasks":3,"checkpoint_type":"CHECKPOINT","tasks":{},"external_path":"file:/opt/hikvision/idatafusion/flink-1.14.0/local-checkpoints/3560f8db528b3fb640e2b5a7db89af2d/chk-25609","discarded":true},{"@class":"completed","id":25608,"status":"COMPLETED","is_savepoint":false,"trigger_timestamp":1648187596643,"latest_ack_timestamp":1648187596648,"state_size":6027,"end_to_end_duration":5,"alignment_buffered":0,"processed_data":0,"persisted_data":0,"num_subtasks":3,"num_ackNowledged_subtasks":3,"checkpoint_type":"CHECKPOINT","tasks":{},"external_path":"file:/opt/hikvision/idatafusion/flink-1.14.0/local-checkpoints/3560f8db528b3fb640e2b5a7db89af2d/chk-25608","discarded":true},{"@class":"completed","id":25607,"status":"COMPLETED","is_savepoint":false,"trigger_timestamp":1648187536643,"latest_ack_timestamp":1648187536648,"state_size":6027,"end_to_end_duration":5,"alignment_buffered":0,"processed_data":0,"persisted_data":0,"num_subtasks":3,"num_ackNowledged_subtasks":3,"checkpoint_type":"CHECKPOINT","tasks":{},"external_path":"file:/opt/hikvision/idatafusion/flink-1.14.0/local-checkpoints/3560f8db528b3fb640e2b5a7db89af2d/chk-25607","discarded":true}]}
5、查询某个job的checkpoints的配置信息
GET /jobs/<jobId>/checkpoints/config
返回示例：（json）
{"mode":"exactly_once","interval":60000,"timeout":600000,"min_pause":0,"max_concurrent":1,"externalization":{"enabled":true,"delete_on_cancellation":false},"state_backend":"HashMapStateBackend","checkpoint_storage":"FileSystemCheckpointStorage","unaligned_checkpoints":false,"tolerable_Failed_checkpoints":0,"aligned_checkpoint_timeout":0}
http://10.192.77.152:8081/jobs/3560f8db528b3fb640e2b5a7db89af2d/checkpoints
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