NullPointer in PojoCache

[scottgj]

Hi,

Versions:

JBossCache - 3.1.0.GA

PojoCache - 3.0.0.GA

During my endurance tests I get such exceptions

1)

org.jboss.cache.pojo.PojoCacheException: detach failed /parlayRa/TEST_NODES/18-12883

        at org.jboss.cache.pojo.impl.PojoCacheImpl.detach(PojoCacheImpl.java:134)

        at org.jboss.cache.pojo.impl.PojoCacheImpl.detach(PojoCacheImpl.java:221)

        at org.mobicents.slee.resource.parlay.util.replication.CacheBase.removeObject(CacheBase.java:74)

        at pl.ivmx.pojocache.cache.TestRemovePojoCache.remove_aroundBody0(TestRemovePojoCache.java:14)

        at pl.ivmx.pojocache.cache.TestRemovePojoCache.remove_aroundBody1$advice(TestRemovePojoCache.java:96)

        at pl.ivmx.pojocache.cache.TestRemovePojoCache.remove(TestRemovePojoCache.java:1)

        at pl.ivmx.pojocache.PeriodicCacheLoader.run(PeriodicCacheLoader.java:72)

        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)

        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)

        at java.util.concurrent.FutureTask.run(FutureTask.java:138)

        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)

        at java.lang.Thread.run(Thread.java:662)

Caused by: java.lang.NullPointerException

        at org.jboss.cache.pojo.impl.InternalHelper.cleanUp(InternalHelper.java:261)

        at org.jboss.cache.pojo.impl.PojoCacheDelegate.removeObject(PojoCacheDelegate.java:264)

        at org.jboss.cache.pojo.impl.PojoCacheImpl.detach(PojoCacheImpl.java:126)

        ... 12 more

2)

org.jboss.cache.pojo.PojoCacheException: detach failed /parlayRa/TEST_NODES/2-67790

        at org.jboss.cache.pojo.impl.PojoCacheImpl.detach(PojoCacheImpl.java:134)

        at org.jboss.cache.pojo.impl.PojoCacheImpl.detach(PojoCacheImpl.java:221)

        at org.mobicents.slee.resource.parlay.util.replication.CacheBase.removeObject(CacheBase.java:74)

        at pl.ivmx.pojocache.cache.TestRemovePojoCache.remove_aroundBody0(TestRemovePojoCache.java:14)

        at pl.ivmx.pojocache.cache.TestRemovePojoCache.remove_aroundBody1$advice(TestRemovePojoCache.java:96)

        at pl.ivmx.pojocache.cache.TestRemovePojoCache.remove(TestRemovePojoCache.java:1)

        at pl.ivmx.pojocache.PeriodicCacheLoader.run(PeriodicCacheLoader.java:72)

        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)

        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)

        at java.util.concurrent.FutureTask.run(FutureTask.java:138)

        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)

        at java.lang.Thread.run(Thread.java:662)

Caused by: java.lang.NullPointerException

        at org.jboss.cache.pojo.impl.InternalHelper.isMultipleReferenced(InternalHelper.java:180)

        at org.jboss.cache.pojo.impl.ObjectGraphHandler.isMultipleReferenced(ObjectGraphHandler.java:79)

        at org.jboss.cache.pojo.impl.PojoCacheDelegate.removeObject(PojoCacheDelegate.java:253)

        at org.jboss.cache.pojo.impl.PojoCacheImpl.detach(PojoCacheImpl.java:126)

        ... 12 more

Does enybody know why?

How to reporoduce error:

To start a test you have to:

1) Copy pojo cache configuration on two nodes (I have cluster comprised from two nodes in LAN)

1a) My JVM config (on both nodes):

JAVA_OPTS="-Xms1200m -Xmx1200m -XX:NewSize=150m -XX:MaxNewSize=150m -XX:MaxPermSize=128m -XX:SurvivorRatio=15 -XX:+UseTLAB -XX:TLABSize=64k -XX:+UseParNewGC -XX:+CMSParallelRemarkEnabled -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:MaxTenuringThreshold=32 -XX:CMSInitiatingOccupancyFraction=66"

1b)

2) Deploy web app on one of node

3) Go to web app web page

http://firstnode_ip:8080/pojocache-load-test/index

4) Choose section

Test with all remove operations running constantly.

and enter values:

Number of members per second: 500

Object live time in ms: 180000

and Run test.

Error should be shown after memory allocated on heap reachs its upper limit (from top totally allocated memory shows about 1.6GB)

Best regards,

Grzegorz Jamka