[AMQ-3622] NPE in LastImageSubscriptionRecoveryPolicy

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.5.1
• Fix Version/s: 5.6.0
• Component/s: Broker
• Patch Info: Patch Available
• Assignee: Gary Tully
• Reporter: Stanley J. Lewis
• Created: 06/Dec/11 15:16
• Updated: 02/May/13 02:29
• Resolved: 07/Dec/11 17:50

Description

Start up a subscriber when no messages are available and this NPE will eventually get logged:

2011-12-02 15:01:00,588 | WARN | Failed to browse Topic: xxx | org.apache.activemq.broker.region.Topic | ActiveMQ Broker[xxx] Scheduler
java.lang.NullPointerException
at org.apache.activemq.broker.region.policy.LastImageSubscriptionRecoveryPolicy.browse(LastImageSubscriptionRecoveryPolicy.java:63)
at org.apache.activemq.broker.region.Topic.browse(Topic.java:564)
at org.apache.activemq.broker.region.Topic$6.run(Topic.java:659)
at org.apache.activemq.thread.SchedulerTimerTask.run(SchedulerTimerTask.java:33)
at java.util.TimerThread.mainLoop(Timer.java:512)
at java.util.TimerThread.run(Timer.java:462)

repeatedly every 30 seconds or so until a message is sent to the topic.

Issue Links

• depends upon: AMQ-3623 Add DefaultTestAppender utility abstract class