IncludeCacheManager can not perfom parallel includes
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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
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/[EMAIL PROTECTED]/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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