Bug 1168321 – hangs reported in mariadb / mariadb galera 5.5.40

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Bug 1168321 - hangs reported in mariadb / mariadb galera 5.5.40

Summary:	hangs reported in mariadb / mariadb galera 5.5.40

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat OpenStack
Classification:	Red Hat
Component:	mariadb-galera (Show other bugs)
Sub Component:
Version:	5.0 (RHEL 7)
Hardware:	Unspecified Unspecified

Priority	urgent Severity urgent
Target Milestone:	z4
Target Release:	5.0 (RHEL 7)
Assigned To:	Michael Bayer
QA Contact:	Ofer Blaut
Docs Contact:

URL:
Whiteboard:
Keywords:	Rebase, ZStream

Depends On:
Blocks:	1203009
	Show dependency tree / graph

Reported:	2014-11-26 11:29 EST by Michael Bayer
Modified:	2016-04-26 12:44 EDT (History)
CC List:	5 users (show)

See Also:
Fixed In Version:	mariadb-galera-5.5.41-2.el7ost
Doc Type:	Rebase: Bug Fixes and Enhancements
Doc Text:
Story Points:	---
Clone Of:
Clones:	1203009 (view as bug list)
Environment:
Last Closed:	2015-04-16 10:37:41 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Bugzilla	1168040	None	CLOSED	hangs reported in mariadb / mariadb galera 5.5.40	2018-07-05 07:29 EDT
Red Hat Product Errata	RHBA-2015:0825	normal	SHIPPED_LIVE	Red Hat Enterprise Linux OpenStack Platform Bug Fix and Enhancement Advisory	2015-04-16 14:28:14 EDT

Groups: None (edit)

Description Michael Bayer 2014-11-26 11:29:35 EST

We've observed reports of MariaDB-Galera hangups (within individual nodes, causing the node to need to be taken offline) with version 5.5.40.  The hangups appear due to an issue identified in MariaDB itself and is introduced in MariaDB 5.5.40; the developers have posted a fix and targeted it for MariaDB 5.5.41.

Issue in MariaDB: https://mariadb.atlassian.net/browse/MDEV-7026

Detailed developer analysis: https://lists.launchpad.net/maria-developers/msg07860.html

Report of the issue specific to Galera: https://groups.google.com/forum/#!topic/codership-team/jB4aV0COkxI

Users of MariaDB 5.5.40 with or without Galera may observe sporadic, random lockups of the database server over the course of days.

Comment 4 Ofer Blaut 2015-03-18 13:33:56 EDT

Hi Michael 

How can we reproduce it  ? can't find any info in attached links

Ofer

Comment 5 Michael Bayer 2015-03-18 14:13:30 EDT

hi Ofer -

it's an extremely rare race condition, I'm not aware of reproduction steps besides the very low-level ones stated in the upstream report in https://mariadb.atlassian.net/browse/MDEV-7026

Comment 9 errata-xmlrpc 2015-04-16 10:37:41 EDT

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-2015-0825.html

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