|Summary:||Replication changelog can incorrectly skip over updates|
|Product:||Red Hat Enterprise Linux 7||Reporter:||Noriko Hosoi <nhosoi>|
|Status:||CLOSED ERRATA||QA Contact:||Viktor Ashirov <vashirov>|
|Severity:||urgent||Docs Contact:||Petr Bokoc <pbokoc>|
|Version:||7.3||CC:||aheverle, arubin, clasohm, ekeck, fjayalat, gparente, ldelouw, lkrispen, mkolaja, mreynolds, msauton, nkinder, pbokoc, rmeggins, rmj, tscherf|
|Fixed In Version:||389-ds-base-22.214.171.124-11.el7||Doc Type:||Bug Fix|
Replication changelog no longer incorrectly skips updates A bug in the changelog iterator buffer caused it to point to an incorrect position when reloading the buffer. This caused replication to skip parts of the changelog, and consequently some changes were not replicated. This bug has been fixed, and replication data loss due to an incorrectly reloaded changelog buffer no longer occurs.
|:||1350707 (view as bug list)||Environment:|
|Last Closed:||2016-11-03 20:40:55 UTC||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
|Cloudforms Team:||---||Target Upstream Version:|
|Bug Depends On:|
Description Noriko Hosoi 2016-03-24 17:48:19 UTC
This bug is created as a clone of upstream ticket: https://fedorahosted.org/389/ticket/48766 In a MMR environment where all the masters are under heavy load the replication changelog cache/buffer mechanism does not always use the correct anchor csn and some updates are not sent to the consumer. Typically it's the very first "bulk load" read from the changelog at the start of a replication session that has issues, but it can also happen during subsequent bulk loads during the same session.
Comment 1 Noriko Hosoi 2016-03-31 17:05:22 UTC
Justification: This bug is severe because it could cause data loss on some random replication consumer servers without being noticed.
Comment 35 errata-xmlrpc 2016-11-03 20:40:55 UTC
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHSA-2016-2594.html