JBoss Knowledge Base Builder hangs up ------------------------------------- Key: JBIDE-15367 URL: https://issues.jboss.org/browse/JBIDE-15367 Project: Tools (JBoss Tools) Issue Type: Bug Components: common/jst/core Reporter: Viacheslav Kabanovich Assignee: Viacheslav Kabanovich Priority: Blocker Fix For: 4.1.1.Alpha1, 4.2.0.Alpha1 https://community.jboss.org/message/833488 The cause is thread unsafe code in org.jboss.tools.jsf.jsf2.bean.model.impl.DefinitionContext. When one thread reads from HashSet while another modifies it, sometimes reading slips into eternal cycle. That is a feature of implementation of java.util.HashSet, and the only way to avoid it is to provide thread safety. I will open an issue.