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Bug 1351323 - Improve MMR replication convergence
Summary: Improve MMR replication convergence
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: 389-ds-base
Version: 7.3
Hardware: All
OS: Linux
urgent
urgent
Target Milestone: rc
: ---
Assignee: Noriko Hosoi
QA Contact: Viktor Ashirov
URL:
Whiteboard:
Depends On: 1349571
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-06-29 17:56 UTC by Marcel Kolaja
Modified: 2016-08-02 18:37 UTC (History)
10 users (show)

Fixed In Version: 389-ds-base-1.3.4.0-33.el7_2
Doc Type: Enhancement
Doc Text:
In a multi-master replication environment where multiple masters receive updates at the same time, it was previously possible for a single master to obtain exclusive access to a replica and hold it for a very long time due to problems such as a slow network connection. During this time, other masters were blocked from accessing the same replica, which considerably slowed down the replication process. This update adds a new configuration attribute, "nsds5ReplicaReleaseTimeout", which can be used to specify a timeout in seconds. After the specified timeout period passes, the master releases the replica, allowing other masters to access it and send their updates.
Clone Of: 1349571
Environment:
Last Closed: 2016-08-02 18:37:42 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2016:1544 0 normal SHIPPED_LIVE 389-ds-base bug fix and enhancement update 2016-08-02 22:22:25 UTC

Description Marcel Kolaja 2016-06-29 17:56:44 UTC 
This bug has been copied from bug #1349571 and has been proposed
to be backported to 7.2 z-stream (EUS).
Comment 5 Viktor Ashirov 2016-07-25 06:42:29 UTC 
Build tested:
389-ds-base-1.3.4.0-33.el7_2

Reliability15 test was executed with replicas configured to use nsds5ReplicaReleaseTimeout: 60
Results: http://storm.idmqe.lab.eng.bos.redhat.com/qa/archive/ds/rhel72/reliab15/run4_1.3.4.0-33-convergence-fix/out/repl-monitor-output/

No issues found during the test. Convergence was achieved much sooner. Time lag was < 10 mins, compared to upto 5 hours with the default settings.

Marking as verified.
Comment 7 errata-xmlrpc 2016-08-02 18:37:42 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/RHBA-2016-1544.html
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