Ivan Lagunov created COCOON-2340:
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Summary: 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
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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