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Re: (ITS#8081) syncprov crash in syncprov_op_mod
- To: openldap-its@OpenLDAP.org
- Subject: Re: (ITS#8081) syncprov crash in syncprov_op_mod
- From: email@example.com
- Date: Fri, 03 Apr 2015 21:04:10 +0000
- Auto-submitted: auto-generated (OpenLDAP-ITS)
I had saw a queer in the CHANGES of 2.4 branch, and also comment of
Exactly: Fixed slapo-syncprov deadlock when autogroup is in use
But really, this (ITS#8081) is NOT related to autogroup (ITS#8063).
This bug was introduced by 7561998f7 (ITS#6335, Quanah Gibson-Mount
Yes, after ITS#8063 this bug could be seen as SIGSEGV.
But before ITS#8063 the syncprov could `re-order` notifications of
changes that are visible by a remote syncrepl.
Under a highload (our use case) this makes possible to 'lost' a some
changes by replication, and then spread this error to all nodes of
ldap-cluster (I spent a lot of time to dig this).
So, this is a INDEPENDENT (critical) bug in syncprov (not in autogroup),
which is also present in 2.4.40 release and so on.