https://issues.apache.org/bugzilla/show_bug.cgi?id=53508
--- Comment #3 from [email protected] --- I think we have found the real bug. With JDK 7 there was implemented a new init method of HashMap and some other Maps. This new Init Method used the standard Random-Generator to calculate the hashcode. But this Random-Generator is synchronized. Causing problems in multithreaded environment. There is no performance bug, when there is only one Thread. But in multithreaded environment there can be a huge loss in performance. This JDK-Bug is fixed with version 1.7.0_40. After update to this version all seem to be fine now. Please look at: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8006593 http://stackoverflow.com/questions/14010906/given-that-hashmaps-in-jdk1-6-and-above-cause-problems-with-multi-threading-how https://blogs.oracle.com/henrik/entry/migrating_from_java_se_6 http://java-performance.info/changes-to-string-java-1-7-0_06/ -- You are receiving this mail because: You are the assignee for the bug. --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
