(ITS#9059) session log parsing triggers cascading REFRESH

[quanah@openldap.org]

Full_Name: Quanah Gibson-Mount
Version: 2.4.47
OS: N/A
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (47.208.128.44)


In investigating why a particular consumer went into REFRESH mode, I find that
this was triggered by one of its providers currently parsing a sessionlog. 
Sessionlog parsing should *not* cause a consumer of that server to fall back to
REFRESH.

Server that got dropped into REFRESH incorrectly:

Jul 30 21:26:48 iam-ed-ldp-p01 slapd[20979]: do_syncrep2: rid=001
LDAP_RES_SEARCH_RESULT
Jul 30 21:26:48 iam-ed-ldp-p01 slapd[20979]: do_syncrep2: rid=001 delta-sync
lost sync, switching to REFRESH
Jul 30 21:26:48 iam-ed-ldp-p01 slapd[20979]: do_syncrep2: rid=001 (4096) Content
Sync Refresh Required

RID001 server:

....
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127055648.177968Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181109151409.323374Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127122502.661263Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127061139.881198Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127062500.514773Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127061139.941766Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127062500.622874Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127061139.977196Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127062500.656726Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181109151409.575116Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127062500.672371Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127062500.701608Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181109151409.833435Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127062500.766277Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181109151410.102670Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127055648.192922Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127061140.091604Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127062500.859669Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127061140.160929Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127122502.664055Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127061140.213051Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: cmp -256, too old
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127122502.666873Z#000000#001#000000
Jul 30 21:26:48 iam-ed-ldp-p02 slapd[3750]: log csn
20181127062500.892859Z#000000#001#000000
....