High CPU in regex calls from Hibernate's PatternValidator

Solution Verified - Updated -

Issue

  • JBoss is consuming high CPU and data shows the high CPU consuming threads making the following calls:
java.util.regex.Pattern$GroupHead.match(Pattern.java:4168)
java.util.regex.Matcher.match(Matcher.java:1127)
java.util.regex.Matcher.matches(Matcher.java:502)
org.hibernate.validator.PatternValidator.isValid(PatternValidator.java:28)
org.hibernate.validator.ClassValidator.getPotentialInvalidValues(ClassValidator.java:524)

Environment

  • JBoss Enterprise Application Platform (EAP)
  • Hibernate

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