On Aug 10, 2007, at 2:16 PM, Howard Chu wrote:

donn@u.washington.edu wrote:

...

Full_Name: Donn Cave Version: 2.4.4 OS: Red Hat Linux URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (128.95.135.150) In "while" loop at 2656, I find old->a_vals are like [..., a, b, ...] and new->a_vals are like [..., b, a, ...]. Matches are found at old [i] == new [k = j+1] and old [k = i+1] == new [j], but this just shows that neither an add nor a delete is called for, and the loop end is reached without having incremented i or j. Actual attribute values I'm looking at right now in the debugger are eduPersonAffiliation: old [ member, alum, employee, faculty ], new [ member, alum, faculty, employee ]. I built the replica from a slapcat dump on the idle master, started the slapd syncrepl client and applied a lot of normal modifications to the master, until it hit the infinite loop. It has been a recurrent problem.

Now fixed in HEAD, please test.

Aug 10 15:06:55 rufus03 slapd[31488]: null_callback : error code 0x14 Aug 10 15:06:55 rufus03 slapd[31488]: syncrepl_entry: rid=101 be_modify (20) Aug 10 15:06:55 rufus03 slapd[31488]: syncrepl_entry: rid=101 be_modify failed (20)

I could put some more research into this, but tell me if this doesn't make sense. Suppose this mysteriously swapped order: a,b,... b,a,...

Your fix increments the first list's index, so next iteration it's b,... b,a,...

which is fine, but next iteration is ... a,...

"a" looks new at this point, and I try to add it, but it isn't new - we just forgot that it was in "old" - and I get error 0x14 (LDAP_TYPE_OR_VALUES_EXISTS)

Donn Cave, donn@u.washington.edu