Co-authored-by: dzygcc <avadar@qq.com>

Co-authored-by: wenmo <32723967+wenmo@users.noreply.github.com>

[Fix-818][connector] fix when the data is flushed with an exception and no new data is entered subsequently (#824)

Co-authored-by: lucas.wu <1220671715>

* 优化 cdc SQLSinkBuilder KafkaSinkBuilder, filter to process

* change "_" to "."

* change "db" to config.getSchemaFieldName()

* change "tableMap key" to table.getSchemaTableName()

Co-authored-by: godkaikai <32723967+godkaikai@users.noreply.github.com>

* jobHistory bug modify

* jobHistory bug modify

* jobHistory bug modify

* add maven wrapper

* add maven-wrapper.jar

* update .gitignore

* docs hotfix

* optimization docs

* Optimize job_import_export

* one click operating

* select save point restart

* onclick-operating

* onclick-operating

* feat:上下线状态明细批量执行开发

* feat:上下线状态明细批量执行开发

* import modify

* application.yml modify

* protocol header add

* doc add

* doc add

* mybatis join remove

* mybatis join remove

* mybatis join remove

Co-authored-by: hanfei <hanfei@qhc.group>

* Fix mail alert params bug

* Update MailSender.java

* The whole library synchronization document repair

* fix The whole library synchronization document repair

The whole library synchronization document repair

Co-authored-by: huangxp <hxp0618@gmail.com>

Dlink add Flink1.15 docs and migrate documentation to dev branch

Co-authored-by: wenmo <32723967+wenmo@users.noreply.github.com>

* fix:dlink平台详情查看信息对象兼容为null问题

* job history null

* fix:blink域名问题

* } add

* dlink文件问题

* superfluous dir remove
Co-authored-by: songshilian <songshilian@qiangungun.com>

* application.yml

* alert group : alert instance ids null

1. When an alarm instance is deleted, the association in the alarm group is deleted in cascade. (#747)

2. When an alarm occurs, if there is a deleted instance in the alarm group instance id, npe will be reported.

* ADD/update Licenses to file header

* ADD/update Licenses to file header

* add CopyrightUtil

Co-authored-by: godkaikai <32723967+godkaikai@users.noreply.github.com>