!plugin app add - "stream-persist-app-2.4";
The first plugin is APP plugin and the second is ET plugin.
Use ET Plugin to persist stream job.
!streamPersist persist streamExample;
!streamPersist remove streamExample;
!streamPersist list;
And then once MLSQL Engine is restarted, and the stream job streamExample will be boosted at the startup of MLSQL.