Bug 1176021

Summary:	Clustered cache with FileStore (shared=false) is inconsistent after restarting one node if entries are deleted during restart
Product:	[JBoss] JBoss Data Grid 6	Reporter:	Misha H. Ali <mhusnain>
Component:	Documentation	Assignee:	Misha H. Ali <mhusnain>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	6.3.1	CC:	dmehra, jdg-bugs, jpallich, mgencur, mhusnain, rvansa, ttarrant, wburns, wfink
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:	1158839	Environment:
Last Closed:	2015-01-27 23:44:17 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:
Bug Blocks:	1153111, 1158839

Comment 2 Misha H. Ali 2014-12-19 07:51:12 UTC

Tristan, can you clarify what do we want to communicate to users for this bug?

Comment 3 Tristan Tarrant 2015-01-07 13:30:19 UTC

The key here is the fact that the store is unshared and therefore, without implementing "tombstones" (i.e. markers for removed keys), it is impossible to have the expected behaviour described in the issue.
So we should say that we do not support this configuration (clustered cache, unshared cachestore, preload=true).

Comment 4 wfink 2015-01-07 14:15:39 UTC

@Tristan, this is not related to preload=true, in any case the stale entry is returned on this node as it is not marked as deleted!

Comment 6 Tristan Tarrant 2015-01-12 08:32:20 UTC

@Divya this is a documentation bug.

We should add a note to the loaders/stores documentation:
If a clustered cache is configured with an unshared cachestore (shared = false), on node join, stale entries which might have been removed from the cluster might still be present in the stores and will reappear.

Comment 8 Martin Gencur 2015-01-15 12:13:36 UTC

I think the text in docs looks good. VERIFIED.