[Glass] Maintenance Gem exits unexpectedly

Alejandro Zuzek a.zuzek at gmail.com
Mon Sep 2 16:47:43 PDT 2013


Hi all,

I have realized I have a problem with the maintenance gem and I'd need help
to solve it. The thing is that the maintenance gem exits about after one
day of operation. This is on a server with very little activity. One data
point that might be of relevance is that I added one maintenance task
to WAGemStoneMaintenanceTask, but this was about a month ago and I am not
sure if I had the maintenance gem problem before I made that change
to WAGemStoneMaintenanceTask. Another fact that might be of interest is
that the extent size has not changed for at least one month and has
remained constant at 494927872 bytes. On the other hand, the tran log has
gone from 509220864 bytes to 554483200 bytes in the same period. I am
running GemStone64Bit3.1.0.1-x86_64.Linux. Below are the last lines on the
logs that I think may have useful information:

tail -10 maintenance_gem.log
...Expired: 0 sessions.
Unregistering...2013-09-01T10:45:23.85392093658447-07:00
...Expired: 0 sessions.
Unregistering...2013-09-01T10:46:23.86733102798462-07:00
...Expired: 0 sessions.
Unregistering...2013-09-01T10:47:23.87195110321045-07:00
...Expired: 0 sessions.
Unregistering...2013-09-01T10:48:23.88839292526245-07:00
...Expired: 0 sessions.
--transcript--'Starting markForCollect.:
2013-09-01T10:48:23.89286208152771-07:00'

tail -13 seaside_30319pcmon.log
[09/01/13 14:48:25.718 ART]: Client died: Slot   12, PID   17784,
LostOtFlags    0, Name mfc-0
[09/01/13 14:48:25.731 ART]: Starting crashed client recovery: Slot 12, PID
17784, Name mfc-0
    Cleaned up locked/pinned frame 562 for crashed process 17784
[09/01/13 14:48:26.002 ART]: Finished crashed client recovery: Slot 12, PID
17784, Name mfc-0
[09/01/13 14:48:26.002 ART]: Starting crashed client recovery: Slot 13, PID
17784, Name mfc-1
    Cleaned up locked/pinned frame 1087 for crashed process 17784
[09/01/13 14:48:26.063 ART]: Finished crashed client recovery: Slot 13, PID
17784, Name mfc-1
[09/01/13 14:48:26.063 ART]: Starting crashed client recovery: Slot 11, PID
17784, Name Maintenance-140-DataCurator
    Cleaned up locked/pinned frame 3521 for crashed process 17784
    Cleaned up locked/pinned frame 2828 for crashed process 17784
    Cleaned up locked/pinned frame 56 for crashed process 17784
    Disposing free frame cache from slot 11:  8 of 8 frames recovered.
[09/01/13 14:48:26.123 ART]: Finished crashed client recovery: Slot 11, PID
17784, Name Maintenance-140-DataCurator

Any help with this will be appreciated.

Thanks,

Alejandro Zuzek
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