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Bug 1108480

Summary:	RFE: Document "Brain Split"
Product:	[JBoss] JBoss Data Grid 6	Reporter:	Misha H. Ali <mhusnain>
Component:	Documentation	Assignee:	Misha H. Ali <mhusnain>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	high
Version:	6.3.0	CC:	dberinde, dereed, gsheldon, jdg-bugs, mgencur, rvansa
Target Milestone:	GA
Target Release:	6.4.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-11-18 23:34:02 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1014461
Bug Blocks:

Description Misha H. Ali 2014-06-12 06:15:43 UTC

New feature

Comment 8 Radim Vansa 2014-11-10 09:29:51 UTC

When talking about numOwners, you're implicitly considering the distribution mode.
Please add a note that in replication mode the numOwners is always equal to the number of nodes in the cluster.

Comment 9 Radim Vansa 2014-11-10 09:43:16 UTC

When a partition enters into Degraded Mode, it only allows access to keys if they meet the following conditions:

* Only read and write requests for entries where all copies of that entry data exists on nodes within the same partition are honored.
* Read and write requests for entries where copies of the entry data exists on nodes that have disappeared from the partition are rejected with an AvailabilityException.

---

The second point does not look like a 'condition'. If the sub-cluster is in degraded mode and the sub-cluster does not contain all owners of the entry, any requests ends with AvailabilityException.

Comment 10 Radim Vansa 2014-11-10 09:44:59 UTC

The declarative and programmatic configurations lack syntax highlighting.

Comment 12 Radim Vansa 2014-11-10 13:12:15 UTC

Looks good. Thanks, Misha.

Comment 13 Misha H. Ali 2014-11-18 23:34:02 UTC

The fix for this bug is now available on access.redhat.com