Continuous 'Service Exited in system log

I get the following continuously in my system log. Any advice on what it is and how to stop it?

Thanks

Jun 5 16:57:09 [MY MAC NAME] com.apple.xpc.launchd[1] (com.apple.mdworker.shared.0A000000-0500-0000-0000-000000000000[2292]): Service exited due to SIGKILL | sent by mds[168]

Jun 5 16:57:12 [MY MAC NAME] com.apple.xpc.launchd[1] (com.apple.mdworker.shared.03000000-0700-0000-0000-000000000000[2286]): Service exited due to SIGKILL | sent by mds[168]

Jun 5 16:57:12 [MY MAC NAME] com.apple.xpc.launchd[1] (com.apple.mdworker.shared.05000000-0700-0000-0000-000000000000[2289]): Service exited due to SIGKILL | sent by mds[168]

Jun 5 16:57:13 [MY MAC NAME] com.apple.xpc.launchd[1] (com.apple.mdworker.shared.0E000000-0500-0000-0000-000000000000[2285]): Service exited due to SIGKILL | sent by mds[168]

Jun 5 16:57:13 [MY MAC NAME] com.apple.xpc.launchd[1] (com.apple.mdworker.shared.0B000000-0500-0000-0000-000000000000[2291]): Service exited due to SIGKILL | sent by mds[168]

Jun 5 16:57:47 [MY MAC NAME] com.apple.xpc.launchd[1] (com.apple.mdworker.shared.0A000000-0600-0000-0000-000000000000[2324]): Service exited due to SIGKILL | sent by mds[168]

Jun 5 16:57:48 [MY MAC NAME] com.apple.xpc.launchd[1] (com.apple.mdworker.shared.0E000000-0400-0000-0000-000000000000[2326]): Service exited due to SIGKILL | sent by mds[168]

Jun 5 16:57:49 [MY MAC NAME] com.apple.xpc.launchd[1] (com.apple.mdworker.single.01000000-0400-0000-0000-000000000000[2325]): Service exited due to SIGKILL | sent by mds[168]

MacBook Air 13″, OS X 10.11

Posted on Jun 5, 2020 9:07 AM

Top-ranking reply

Dio Gratia

Level 1

9 points

Posted on Jan 6, 2021 4:23 PM

This can also occur when migrating from a version of OS X/MacOS that didn't require signed mdimporters (usually provided by apps claiming file name suffixes). They'd be found in /Library/Spotlight/ and they can be deleted by sudo from someone with administrator access. Like throwing a switch and those messages stop in the system log.

Found out by forcing a Spotlight re-index and got a pop-up message saying the UID mdworker.shared.0A000000-0500-0000-0000-000000000000 or so, the second numerical field would be a volume that can't be scanned by an unsigned mdimporter and the process gets killed (too fast for you to get the identifying info in the Activity Monitor).

The one I recall adding in Mavericks was epub.mdimporter (an archive). Managed to pass all the way through the Migration Assistant for Big Sur 11.1 (on a Macbook Air M1).

Getting rid of the messages made my day.

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Continuous 'Service Exited in system log

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