[jboss-jira] [JBoss JIRA] Commented: (JGRP-686) Inconsistent Channel#getState return semantics between byte and streaming state transfer

[Vladimir Blagojevic (JIRA)]

    [ http://jira.jboss.com/jira/browse/JGRP-686?page=comments#action_12398844 ] 
            
Vladimir Blagojevic commented on JGRP-686:
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Not that we are not changing at all boolean return value semantics of getState. If state was received at channel level getState will return true. Channel#getState will return false in case of a first singleton member requesting state or if state was not received at channel level. We are not doing anything different. For example, Channel#getState will still return true even though state installation failed (e.g. threw an Exception) on application level. 

We are going to improve getState semantics in 3.0 release. See http://jira.jboss.com/jira/browse/JGRP-619 for details.

> Inconsistent Channel#getState return semantics between byte and streaming state transfer
> ----------------------------------------------------------------------------------------
>
>                 Key: JGRP-686
>                 URL: http://jira.jboss.com/jira/browse/JGRP-686
>             Project: JGroups
>          Issue Type: Bug
>    Affects Versions: 2.5, 2.6, 2.5.1, 2.5.2, 2.6.1
>            Reporter: Vladimir Blagojevic
>         Assigned To: Vladimir Blagojevic
>             Fix For: 2.7, 2.6.2
>
>
> We have inconsistency between byte and streaming based state transfer when it comes to semantics of returning from Channel#getState call. In streaming state transfer calling thread returns from Channel#getState when application installs a state (or fails) and for byte transfer calling thread returns from Channel#getState as soon as state arrives to channel and *prior* to state installation in client application. We should make Channel#getState calling thread return *after* state installation for byte based state transfer as well. 

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