[AMQ-4917] LevelDB store can fail when using durable subs

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.9.0
• Fix Version/s: 5.9.1, 5.10.0
• Component/s: Broker
• Assignee: Hiram R. Chirino
• Reporter: Hiram R. Chirino
• Created: 04/Dec/13 16:02
• Updated: 07/Jun/14 20:30
• Resolved: 06/Dec/13 14:43

Description

Tenzin giatso original reported this issue in AMQ-4837 :

The broker stopped 3 times this night after about 6h50min, then 6h50 min then 50min.
The error sounds to be the saùme (except the line number in class) but the broker restart automaticly with the snapshot.
2013-11-19 05:27:43,671 | INFO | Stopping BrokerService[localhost] due to exception, java.io.IOException | org.apache.activemq.util.DefaultIOExceptionHandler | LevelDB IOException handler.
java.io.IOException
at org.apache.activemq.util.IOExceptionSupport.create(IOExceptionSupport.java:39)
at org.apache.activemq.leveldb.LevelDBClient.might_fail(LevelDBClient.scala:554)
at org.apache.activemq.leveldb.LevelDBClient.might_fail_using_index(LevelDBClient.scala:1021)
at org.apache.activemq.leveldb.LevelDBClient.collectionCursor(LevelDBClient.scala:1320)
at org.apache.activemq.leveldb.LevelDBClient.queueCursor(LevelDBClient.scala:1244)
at org.apache.activemq.leveldb.DBManager.cursorMessages(DBManager.scala:708)
at org.apache.activemq.leveldb.LevelDBStore$LevelDBMessageStore.recover(LevelDBStore.scala:747)
at org.apache.activemq.broker.region.Topic.doBrowse(Topic.java:588)
at org.apache.activemq.broker.region.Topic.access$100(Topic.java:65)
at org.apache.activemq.broker.region.Topic$6.run(Topic.java:721)
at org.apache.activemq.thread.SchedulerTimerTask.run(SchedulerTimerTask.java:33)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at org.apache.activemq.leveldb.LevelDBClient$$anonfun$queueCursor$1.apply(LevelDBClient.scala:1248)
It's not easy to reproduce. It's better with the snapshot but i can't say that no messages are lost with leveldb.

Issue Links

• relates to: AMQ-4837 LevelDB corrupted when in a replication cluster