[ https://jira.jboss.org/browse/ISPN-699?page=com.atlassian.jira.plugin.sys... ] Galder Zamarreño updated ISPN-699: ---------------------------------- Description: See the parent issue ISPN-697 , which contains more details and an application which can occasionally reproduce the NPE. 2010-10-11 15:55:27,305 ERROR [Scheduled-eviction-thread-0] (FileCacheStore.java:184) - Error while reading from file: /home/cching/dev/infinispan-hang/./store/Users/-202784536 java.lang.NullPointerException at org.infinispan.marshall.jboss.ConstantObjectTable.readObject(ConstantObjectTable.java:253) at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:357) at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:207) at org.jboss.marshalling.AbstractUnmarshaller.readObject(AbstractUnmarshaller.java:85) at org.infinispan.marshall.jboss.GenericJBossMarshaller.objectFromObjectStream(GenericJBossMarshaller.java:162) at org.infinispan.marshall.VersionAwareMarshaller.objectFromObjectStream(VersionAwareMarshaller.java:179) at org.infinispan.loaders.file.FileCacheStore.objectFromInputStreamInReentrantMode(FileCacheStore.java:262) at org.infinispan.loaders.file.FileCacheStore.loadBucket(FileCacheStore.java:181) at org.infinispan.loaders.file.FileCacheStore.purgeInternal(FileCacheStore.java:161) at org.infinispan.loaders.AbstractCacheStore$2.run(AbstractCacheStore.java:84) at org.infinispan.util.concurrent.WithinThreadExecutor.execute(WithinThreadExecutor.java:47) at org.infinispan.loaders.AbstractCacheStore.purgeExpired(AbstractCacheStore.java:81) at org.infinispan.eviction.EvictionManagerImpl.processEviction(EvictionManagerImpl.java:115) at org.infinispan.eviction.EvictionManagerImpl$ScheduledTask.run(EvictionManagerImpl.java:136) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) was: See the parent issue ISPN-697 , which contains more details and an application which can occasionally reproduce the NPE. java.lang.NullPointerException at org.infinispan.marshall.jboss.ConstantObjectTable.readObject(ConstantObjectTable.java:253) at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:357) at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:207) at org.jboss.marshalling.AbstractUnmarshaller.readObject(AbstractUnmarshaller.java:85) at org.infinispan.marshall.jboss.GenericJBossMarshaller.objectFromObjectStream(GenericJBossMarshaller.java:162) at org.infinispan.marshall.VersionAwareMarshaller.objectFromObjectStream(VersionAwareMarshaller.java:179) at org.infinispan.loaders.file.FileCacheStore.objectFromInputStreamInReentrantMode(FileCacheStore.java:262) at org.infinispan.loaders.file.FileCacheStore.loadBucket(FileCacheStore.java:181) at org.infinispan.loaders.file.FileCacheStore.purgeInternal(FileCacheStore.java:161) at org.infinispan.loaders.AbstractCacheStore$2.run(AbstractCacheStore.java:84) at org.infinispan.util.concurrent.WithinThreadExecutor.execute(WithinThreadExecutor.java:47) at org.infinispan.loaders.AbstractCacheStore.purgeExpired(AbstractCacheStore.java:81) at org.infinispan.eviction.EvictionManagerImpl.processEviction(EvictionManagerImpl.java:115) at org.infinispan.eviction.EvictionManagerImpl$ScheduledTask.run(EvictionManagerImpl.java:136) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) -- This message is automatically generated by JIRA. - 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[ https://jira.jboss.org/browse/ISPN-699?page=com.atlassian.jira.plugin.sys... ] Galder Zamarreño commented on ISPN-699: --------------------------------------- Hmm, this is puzzling me now. Once I added more information about the exception, I see: org.infinispan.CacheException: Type of data read is unknown. Byte read ('42') is not amongst known reader indexes. at org.infinispan.marshall.jboss.ConstantObjectTable.readObject(ConstantObjectTable.java:259) What the heck? static final byte BUCKET = 42; and @Marshallable(externalizer = Bucket.Externalizer.class, id = Ids.BUCKET) public final class Bucket So, either: - The HashMap contains a null for 42 index - Or the HashMap does not contain the 42 index at all - Or the ConstantObjectTable in use is not the one initially set up This is stored in a simple HashMap, nothing fancy. Adding more logging to this. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

[ https://jira.jboss.org/browse/ISPN-699?page=com.atlassian.jira.plugin.sys... ] Sanne Grinovero commented on ISPN-699: -------------------------------------- or "42" is of a different type, returning false to the equals check in the HashMap? -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

[ https://jira.jboss.org/browse/ISPN-699?page=com.atlassian.jira.plugin.sys... ] Galder Zamarreño commented on ISPN-699: --------------------------------------- Sanne, no, it's not a problem of equality but more a problem of constant object table having been cleared at stop time. What I'm not sure here is whether ISPN-630 is the same issue, but I expect at least that my proposed fix will at least give us more clues of what's wrong. The reason I say this cos I can't see how you can carry on talking to the Cache and calling get() on it, if the cache manager has stopped. Remember that the marshaller is a globally scoped component, so will only shut down when the cache manager is stopped. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

[ https://jira.jboss.org/browse/ISPN-699?page=com.atlassian.jira.plugin.sys... ] Galder Zamarreño commented on ISPN-699: --------------------------------------- It could well be, see my last comment. I do expect though that as part of resolution of this JIRA, the code in COT.readObject() will give us more clues on what is going wrong in your case. So, work on this jira won't be in vain :) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

[ https://jira.jboss.org/browse/ISPN-699?page=com.atlassian.jira.plugin.sys... ] Sanne Grinovero commented on ISPN-699: -------------------------------------- eh I agree with the strategy, but you're cheating:) the new title of this JIRA is not reflecting my situation anymore, I didn't cancel any eviction thread. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

[ https://jira.jboss.org/browse/ISPN-699?page=com.atlassian.jira.plugin.sys... ] Galder Zamarreño resolved ISPN-699. ----------------------------------- Resolution: Done -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira