Bug 1230012 - [Doc Change] Add paragraph about limitation of using message selector on paged messages
Summary: [Doc Change] Add paragraph about limitation of using message selector on page...
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: JBoss Enterprise Application Platform 6
Classification: JBoss
Component: Documentation
Version: 6.4.0
Hardware: Unspecified
OS: Unspecified
unspecified
medium
Target Milestone: post-GA
: EAP 6.4.0
Assignee: Priyanka Nag
QA Contact: Miroslav Novak
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-06-10 06:37 UTC by Miroslav Novak
Modified: 2015-10-20 12:59 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Build Name: 22924, Administration and Configuration Guide-6.4 Build Date: 29-05-2015 13:15:56 Topic ID: 32286-673400 [Specified]
Last Closed: 2015-10-20 12:59:28 UTC
Type: Bug
Embargoed:


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Links
System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 1169781 0 unspecified CLOSED Paged messages cannot be consumed by consumer with message selector 2021-02-22 00:41:40 UTC

Internal Links: 1169781

Description Miroslav Novak 2015-06-10 06:37:15 UTC
Title: Configuration of Paging Folder

Describe the issue:
There is undocumented feature which holds for paged messages. 

New paragraph with following information should be added with something like:
"If there is consumer with message selector which reads messages from queue then messages which are currently in memory and match the selector are delivered to consumer. As consumer acknowledge delivery of those messages, new messages are depaged and loaded to memory. For performance reasons HornetQ is not scanning paged messages to verify that they match consumer's selector and there is no guarantee that new depaged messages will match consumer's selector. It can happen that consumer will starve until another consumer reads the "other" messages in memory so messages for consumer with selector will be loaded."

Comment 5 Miroslav Novak 2015-06-17 11:10:33 UTC
Hi Priyanka,

thanks! Note looks great, I have just minor things. 

Can you move the note at the end of chapter "18.6.2. Page Files"? 

Maybe we could add sentence at the end like: "Until then consumer with selector might not get any messages.". WDYT?

Mirek

Comment 9 Miroslav Novak 2015-07-10 09:38:12 UTC
Verified! Note looks great :-) Thanks!


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