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From "Serge Smertin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMQ-5339) LevelDBClient operation failed. NullPointerException after entering recovery mode
Date Mon, 01 Sep 2014 13:34:20 GMT
Serge Smertin created AMQ-5339:
----------------------------------

             Summary: LevelDBClient operation failed. NullPointerException after entering
recovery mode
                 Key: AMQ-5339
                 URL: https://issues.apache.org/jira/browse/AMQ-5339
             Project: ActiveMQ
          Issue Type: Bug
          Components: activemq-leveldb-store
    Affects Versions: 5.8.0
         Environment: CentOS 6.5
            Reporter: Serge Smertin
            Priority: Critical


Once in a while we're getting following exception in AMQ logs and there is no other way than
purging the queue. How can we overcome this issue? Is it okay to use LevelDB store now? Any
answers? :)

2014-09-01 13:25:52,065 [erSimpleAppMain] DEBUG AbstractRegion                 - localhost
adding destination: queue://files/dead
2014-09-01 13:25:52,081 [erSimpleAppMain] DEBUG TaskRunnerFactory              - Initialized
TaskRunnerFactory[ActiveMQ BrokerService[localhost] Task] using ExecutorService: null
2014-09-01 13:25:52,098 [erSimpleAppMain] WARN  LevelDBClient                  - DB operation
failed. (entering recovery mode)
2014-09-01 13:25:52,099 [erSimpleAppMain] DEBUG LevelDBClient                  - java.lang.NullPointerException
java.lang.NullPointerException
        at org.apache.activemq.leveldb.LevelDBClient$$anonfun$queueCursor$1.apply(LevelDBClient.scala:966)
        at org.apache.activemq.leveldb.LevelDBClient$$anonfun$queueCursor$1.apply(LevelDBClient.scala:962)
        at org.apache.activemq.leveldb.LevelDBClient$$anonfun$collectionCursor$1$$anonfun$apply$mcV$sp$9.apply(LevelDBClient.scala:1038)
        at org.apache.activemq.leveldb.LevelDBClient$$anonfun$collectionCursor$1$$anonfun$apply$mcV$sp$9.apply(LevelDBClient.scala:1037)
        at org.apache.activemq.leveldb.LevelDBClient$RichDB.check$4(LevelDBClient.scala:309)
        at org.apache.activemq.leveldb.LevelDBClient$RichDB.cursorRange(LevelDBClient.scala:311)
        at org.apache.activemq.leveldb.LevelDBClient$$anonfun$collectionCursor$1.apply$mcV$sp(LevelDBClient.scala:1037)
        at org.apache.activemq.leveldb.LevelDBClient$$anonfun$collectionCursor$1.apply(LevelDBClient.scala:1037)
        at org.apache.activemq.leveldb.LevelDBClient$$anonfun$collectionCursor$1.apply(LevelDBClient.scala:1037)
        at org.apache.activemq.leveldb.LevelDBClient.usingIndex(LevelDBClient.scala:760)
        at org.apache.activemq.leveldb.LevelDBClient$$anonfun$retryUsingIndex$1.apply(LevelDBClient.scala:766)
        at org.apache.activemq.leveldb.util.RetrySupport$.retry(RetrySupport.scala:38)
        at org.apache.activemq.leveldb.LevelDBClient.retry(LevelDBClient.scala:457)
        at org.apache.activemq.leveldb.LevelDBClient.retryUsingIndex(LevelDBClient.scala:766)
        at org.apache.activemq.leveldb.LevelDBClient.collectionCursor(LevelDBClient.scala:1036)
        at org.apache.activemq.leveldb.LevelDBClient.queueCursor(LevelDBClient.scala:962)
        at org.apache.activemq.leveldb.DBManager.cursorMessages(DBManager.scala:633)
        at org.apache.activemq.leveldb.LevelDBStore$LevelDBMessageStore.recoverNextMessages(LevelDBStore.scala:643)
        at org.apache.activemq.broker.region.Queue.initialize(Queue.java:381)
        at org.apache.activemq.broker.region.DestinationFactoryImpl.createDestination(DestinationFactoryImpl.java:87)
        at org.apache.activemq.broker.region.AbstractRegion.createDestination(AbstractRegion.java:526)
        at org.apache.activemq.broker.jmx.ManagedQueueRegion.createDestination(ManagedQueueRegion.java:56)
        at org.apache.activemq.broker.region.AbstractRegion.addDestination(AbstractRegion.java:136)
        at org.apache.activemq.broker.region.RegionBroker.addDestination(RegionBroker.java:277)
        at org.apache.activemq.broker.BrokerFilter.addDestination(BrokerFilter.java:145)
        at org.apache.activemq.advisory.AdvisoryBroker.addDestination(AdvisoryBroker.java:174)
        at org.apache.activemq.broker.BrokerFilter.addDestination(BrokerFilter.java:145)
        at org.apache.activemq.broker.BrokerFilter.addDestination(BrokerFilter.java:145)
        at org.apache.activemq.broker.MutableBrokerFilter.addDestination(MutableBrokerFilter.java:151)
        at org.apache.activemq.broker.region.AbstractRegion.start(AbstractRegion.java:98)
        at org.apache.activemq.broker.region.RegionBroker.start(RegionBroker.java:179)
        at org.apache.activemq.broker.jmx.ManagedRegionBroker.start(ManagedRegionBroker.java:119)
        at org.apache.activemq.broker.BrokerFilter.start(BrokerFilter.java:157)
        at org.apache.activemq.broker.BrokerFilter.start(BrokerFilter.java:157)
        at org.apache.activemq.broker.TransactionBroker.start(TransactionBroker.java:122)
        at org.apache.activemq.broker.BrokerService$5.start(BrokerService.java:2078)
        at org.apache.activemq.broker.BrokerService.doStartBroker(BrokerService.java:636)
        at org.apache.activemq.broker.BrokerService.startBroker(BrokerService.java:617)
        at org.apache.activemq.broker.BrokerService.start(BrokerService.java:553)
        at org.apache.activemq.xbean.XBeanBrokerService.afterPropertiesSet(XBeanBrokerService.java:60)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)



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