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From "Javier Puerto (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (COCOON-2340) XMLByteStreamCompiler in not thread-safe
Date Sat, 30 Nov 2013 14:27:39 GMT

     [ https://issues.apache.org/jira/browse/COCOON-2340?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Javier Puerto reassigned COCOON-2340:
-------------------------------------

    Assignee: Javier Puerto

> XMLByteStreamCompiler in not thread-safe
> ----------------------------------------
>
>                 Key: COCOON-2340
>                 URL: https://issues.apache.org/jira/browse/COCOON-2340
>             Project: Cocoon
>          Issue Type: Bug
>          Components: * Cocoon Core
>    Affects Versions: 2.2
>            Reporter: Ivan Lagunov
>            Assignee: Javier Puerto
>
> I'm periodically getting the following exceptions in different places:
> Caused by: java.lang.ArrayIndexOutOfBoundsException
>         at java.lang.System.arraycopy(Native Method)
>         at org.apache.cocoon.components.sax.XMLByteStreamCompiler.getSAXFragment(XMLByteStreamCompiler.java:61)
>         at org.apache.cocoon.components.pipeline.impl.ExpiresCachingProcessingPipeline.processXMLPipeline(ExpiresCachingProcessingPipeline.java:152)
> After debugging I've found the root cause. It happens due to multi-threading when one
thread allocates newbuf array, then another thread increments bufCount in write method and
then the first thread fails on System.arraycopy invocation.
> I suggest making getSAXFragment and write methods synchronized. It should resolve the
issue. If it helps, I'll provide a patch later.



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