Enter a short symptom description here
A ZIP exception is thrown when a jar or war file is accessed.
The JVM maintains a cache of ZIP file indexes and they do not support hot replacement of
zip files. Thus if a web application is redeployed and the same war or jar files are used
then the cache will cause exceptions when re-reading the jars.
The remedy is to avoid hot replacing jar or war files - which can be difficult if using the hot context deployer. The following techniques can be used to reduce exposure to this issue: