Which of the following tasks is not performed by the job coordinator?

Which of the following tasks is not performed by the job coordinator?

Which of the following tasks is not performed by the job coordinator?

A.
Update job log when a job completes

B.
Spawn and remove job slaves

C.
Write/read job info to/from memory cache

D.
Query job table

E.
Pass job information to job slaves



Leave a Reply 2

Your email address will not be published. Required fields are marked *


Helcio

Helcio

The job coordinator:

Controls and spawns the job slaves

Queries the job table

Picks up jobs from the job table on a regular basis and places them in a memory cache. This improves performance by reducing trips to the disk

Takes jobs from the memory cache and passes them to job slaves for execution

Cleans up the job slave pool when slaves are no longer needed

Goes to sleep when no jobs are scheduled

Wakes up when a new job is about to be executed or a job was created using the CREATE_JOB procedure

Upon database, startup after an abnormal database shutdown, recovers any jobs that were running.