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List:       xml-cocoon-dev
Subject:    RE: Cocoon 2.1.11- Avalon issue using IBM java 6 jvm
From:       "Laurent Medioni" <lmedioni () odyssey-group ! com>
Date:       2009-06-18 8:26:13
Message-ID: 1949AD5ABC81714CA5714180173014B0010CDB22 () mail4 ! oams ! com
[Download RAW message or body]

Fix now promised for IBM Java Runtimes 6.0 SR6.

-----Original Message-----
From: Laurent Medioni [mailto:lmedioni@odyssey-group.com] 
Sent: lundi, 15. juin 2009 15:41
To: users@cocoon.apache.org
Cc: dev@cocoon.apache.org
Subject: Cocoon 2.1.11- Avalon issue using IBM java 6 jvm

Hello,
On a Websphere 7 server we noticed in the logs many occurrences of:
"WARN ... [core.manager] ... WebContainer : 4/ExcaliburComponentSelector: Attempted \
to release a $Proxy32 but its handler could not be located."

We have been able to debug the case: ExcaliburComponentSelector is not able to find \
back a Component proxy in the Component mapping map, and after some investigations \
the culprit is... the "new" IBM implementation of HashMap.get.

The java 4 IBM jvm does (like the Sun or BEA ones), to compare keys, ((x == y) || \
(x.equals(y))), == is OK for the proxy, so it works. The java 6 one skips the == test \
and ends up directly calling .equals on the proxy, which correctly relays to the \
proxified item, but still passing a proxy in parameter to the equals, so NOK.

This, at least, leads to leaks in the components maps (components are never released \
then recreated, ...), and whatever else we have not noticed yet...

We posted this issue to IBM and are waiting for an answer: \
http://www.ibm.com/developerworks/forums/thread.jspa?messageID=14261744


This issue does not appear when running a Sun or BEA jvm (java 4 or 6) or an IBM java \
4 jvm.

Just wanted to let you know...

Thanks.

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