[WICKET-6169] NullPointerException accessing AbstractRequestLogger.getLiveSessions

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 7.3.0
• Fix Version/s: 8.0.0-M1, 7.4.0, 6.24.0
• Component/s: wicket
• Assignee: Martin Tzvetanov Grigorov
• Reporter: Sverre Boschman
• Created: 19/May/16 07:30
• Updated: 21/May/16 11:14
• Resolved: 21/May/16 11:14

Description

AbstractRequestLogger.getLiveSessions throws a NPE while sorting the liveSessions if a session is destroyed concurrently.

java.lang.NullPointerException
at java.util.ComparableTimSort.countRunAndMakeAscending(ComparableTimSort.java:320)
at java.util.ComparableTimSort.sort(ComparableTimSort.java:188)
at java.util.Arrays.sort(Arrays.java:1246)
at org.apache.wicket.protocol.http.AbstractRequestLogger.getLiveSessions(AbstractRequestLogger.java:139)
at org.apache.wicket.requestlogger.RequestLoggerLiveSessionsTest.test(RequestLoggerLiveSessionsTest.java:27)