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From "imran pariyani (JIRA)" <j...@apache.org>
Subject [jira] Commented: (COCOON-2216) IncludeCacheManager can not perfom parallel includes
Date Tue, 30 Sep 2008 01:59:44 GMT

    [ https://issues.apache.org/jira/browse/COCOON-2216?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12635633#action_12635633
] 

imran pariyani commented on COCOON-2216:
----------------------------------------

have attached both the blocks again ... actually webapp block is the same without any changes
.. 

 below the components there are three links .. one with one param , second one with 2 params
and the thrid one with 3 params ... and i set one request attribute in the class pagegenerator
... so the request attribute should always be displayed .. and the request parameters depends
on the link you click ... so if you click the first link then the first parameter should be
displayed and so on ... 

but as you will notice the attribute and the parameters are displayed only sometimes .. very
rarely.. 

i access the params in the jx pages .. with ${cocoon.request.getParameter('param1')} so they
should always be there if they are present in the url ... 

> IncludeCacheManager can not perfom parallel includes
> ----------------------------------------------------
>
>                 Key: COCOON-2216
>                 URL: https://issues.apache.org/jira/browse/COCOON-2216
>             Project: Cocoon
>          Issue Type: Bug
>          Components: - Components: Sitemap
>    Affects Versions: 2.2-dev (Current SVN)
>            Reporter: Christoph Gaffga
>            Assignee: Grzegorz Kossakowski
>         Attachments: cocoon-trunk.patch, multi-thread-simple-28.09.2008.patch, ParallelInclusionProblem-cocoon_TRUNK.patch,
test-block.zip, test-block.zip, test-webapp.zip, test-webapp.zip
>
>
> Since we migrated from cocoon 2.1 to 2.2 a generator that merges multiple sources from
other cocoon pipelines into one (similar to the aggregator) is not working anymore.
> We also posted our problem to the mailing list, got little feedback but it brought us
on the right way...
> see also: http://www.mail-archive.com/users@cocoon.apache.org/msg42173.html
> I found out that it's a problem with the DefaultIncludeCacheManager, that can not do
parallel inclusion of cocoon-pipelines anymore. I checked several classes where inclusion
is used. In the aggregator parallel inclusion is not an option anymore, in CIncludeTransformer
the IncludeCacheManager is used, but it can't do parallel inclusion. In the new IncludeTransfomer
parallel inclusion is supported, but it does not use caching as it does not use the IncludeCacheManager...
> But we needed caching AND parallel processing, so I tried to find out what's broken in
the DefaultIncludeCacheManager:
> and it seems that the ThreadLocal variables are not initialized for the child threads
that do the inclusion. Neither the spring context nor the old environment stuff was initialized.
And all the source resolving was done outside the child thread and that way using the wrong
thread context. 
> We were able to fix that issue by small changes to DefaultIncludeCacheManager and IncludeCacheManagerSession.
It would be great if somebody could apply this patch so we don'T have to patch every cocoon
version again and again...

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