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Random ldappc failures

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  • From: Paul Engle <>
  • To:
  • Subject: Random ldappc failures
  • Date: Fri, 17 Jul 2009 14:58:22 -0500

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Since upgrading to 1.4.2, I'm having seemingly random
failures of our main ldappc provisioning. The initial run goes
fine, but then once it starts running the intervals, I can
never predict how long it will go. Sometimes it runs for hours
(interval is 15 minutes), sometimes it dies after just a few
intervals. It rarely lasts more than a day, though.

I have logging cranked up, but the debug log doesn't give any
more than the following when it fails:

2009-07-16 22:49:43,520: [Timer-0] INFO
- -[edu.internet2.middleware.ldappc.LdappcProvisionControl]
*****Starting Provisioning *****
2009-07-16 22:49:43,864: [Timer-0] DEBUG DebugLog.debug(88)
- -[edu.internet2.middleware.ldappc.GrouperSubjectRetriever]
Found GrouperSystem
2009-07-16 22:49:43,900: [Timer-0] INFO
- -Started GrouperSession:
2009-07-16 22:50:43,925: [Timer-0] INFO -
Stopped GrouperSession:
2009-07-16 22:50:43,924: [Timer-0] FATAL ErrorLog.fatal(122) -
Grouper Provision Failed: null
2009-07-16 22:50:43,925: [Timer-0] INFO -
Subject ID Lookups: 353390
2009-07-16 22:50:43,926: [Timer-0] INFO -
Subject Table Hits: 307329
2009-07-16 22:50:43,926: [Timer-0] INFO -
Subject hit ratio: 87.0%

During successful intervals, the logs typically have
GroupEntrySynchronizer messages between the Started & Stopped
lines. Since I'm not seeing those when it fails, it seems like
it may be something during the initialization of the interval
run. The database isn't changing between the last success and
the failure, so I don't think it's something in the data. Any
pointers for what to look for would be great.

In other news, the slowness I was seeing in initial
provisioning runs is gone now. A combination of moving to 1.4.2
& giving grouper a dedicated ldap server to talk to. Now the
initial provisioning takes around 2 hours (down from 30+).


- --
Paul D. Engle | Rice University
Sr. Systems Administrator | Information Technology - MS119
(713)348-4702 | PO Box 1892

| Houston, TX 77252-1892
Version: GnuPG v1.4.7 (MingW32)


  • Random ldappc failures, Paul Engle, 07/17/2009

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