how to know from which user Ess Job 'Maintain Candidates and Job Requisitions for Search' scheduled

Summary

I want to know from which user login this Ess job 'Maintain Candidates and Job Requisitions for Search' has scheduled.

Content

In our system somebody scheduled Ess Job 'Maintain Candidates and Job Requisitions for Search' .I want to know from which user login this Ess job has scheduled.

Version

21 A