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From sebb <>
Subject [ALL] RAT 0.9 slowness
Date Wed, 15 May 2013 01:19:13 GMT
I've just done a test with IO, and the speed problem seems to be
related to the SVN files under site-content.
These seem to cause 0.9 to hang - a thread dump shows the code is
mainly at the line:

at org.apache.rat.analysis.license.FullTextMatchingLicense.match(

This is calling Pattern.matcher() so I assume there must be some kind
of content that causes the regex engine to churn.
Perhaps the pattern is causing excess backtracking.

I've no idea why 0.9 has a problem with these particular files, but
they should not be included in the RAT check anyway.

If you want to test RAT on its own:

mvn apache-rat:rat [-Dcommons.rat.version=0.9]

Obviously there is a bug in RAT 0.9, but maybe we can avoid it by
excluding site-content.

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