* [FIX-#4172][server-worker] kill task NPE
The cache task will be sent when the Process is generated. Before that, if a kill task appears, then NPE will appear
Modification method: write into the cache when the task is received, and mark it as preData
If the task is killed before the Process is generated, delete the cache directly at this time
It will be judged before the process is generated. If the task has been killed, it will not be executed.
After the new process is created, write it into the cache, and judge again, if kill, then kill the process.
this closes#4172
* Delete the commented out code
Add spring beans
* code smell
* add test
* add test
* fix error
* test
* test
* revert
* fix error
Kirs
a13e737eb4