[infinispan-issues] [JBoss JIRA] Commented: (ISPN-601) TreeCache and CacheStore issues when adding an entry that exists in the store but not in memory

[Galder Zamarreno (JIRA)]

    [ https://jira.jboss.org/browse/ISPN-601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12545086#action_12545086 ] 

Galder Zamarreno commented on ISPN-601:
---------------------------------------

Rather than being an issue with tree module itself, it's an issue with a sequence of standard cache events and the cache loader layer:

   public void testDuplicatePersistence(Method m) throws Exception {
      String key = "k-" + m.getName();
      String value = "v-" + m.getName();
      cache.put(key, value);
      assert value.equals(cache.get(key));
      cache.stop();
      cache.start();
      tm.begin();
      cache.containsKey(key);
      cache.getAdvancedCache().withFlags(Flag.FORCE_WRITE_LOCK).get(key);
      cache.put(key, value);
      tm.commit();
      assert value.equals(cache.get(key));
   }

After restart, the get call with FWL flag forces a reload and attempt to wrap it again which leads to the NPE.

> TreeCache and CacheStore issues when adding an entry that exists in the store but not in memory
> -----------------------------------------------------------------------------------------------
>
>                 Key: ISPN-601
>                 URL: https://jira.jboss.org/browse/ISPN-601
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Loaders and Stores, Tree API
>    Affects Versions: 4.1.0.CR2
>            Reporter: Tom Coates
>            Assignee: Galder Zamarreno
>            Priority: Critical
>             Fix For: 4.1.0.CR3
>
>
> The pattern:
> put()
> stop()
> start()
> put()
> throws an exception when a cache store is configured and the treecache adapter is used.
> java.lang.NullPointerException
> 	at org.infinispan.interceptors.CacheLoaderInterceptor.recordLoadedEntry(CacheLoaderInterceptor.java:182)
> 	at org.infinispan.interceptors.CacheLoaderInterceptor.loadIfNeeded(CacheLoaderInterceptor.java:147)
> 	at org.infinispan.interceptors.CacheLoaderInterceptor.loadIfNeededAndUpdateStats(CacheLoaderInterceptor.java:200)
> 	at org.infinispan.interceptors.CacheLoaderInterceptor.visitGetKeyValueCommand(CacheLoaderInterceptor.java:87)
> 	at org.infinispan.commands.read.GetKeyValueCommand.acceptVisitor(GetKeyValueCommand.java:58)
> 	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
> 	at org.infinispan.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:132)
> 	at org.infinispan.commands.AbstractVisitor.visitGetKeyValueCommand(AbstractVisitor.java:87)
> 	at org.infinispan.commands.read.GetKeyValueCommand.acceptVisitor(GetKeyValueCommand.java:58)
> 	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
> 	at org.infinispan.interceptors.TxInterceptor.enlistReadAndInvokeNext(TxInterceptor.java:171)
> 	at org.infinispan.interceptors.TxInterceptor.visitGetKeyValueCommand(TxInterceptor.java:162)
> 	at org.infinispan.commands.read.GetKeyValueCommand.acceptVisitor(GetKeyValueCommand.java:58)
> 	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
> 	at org.infinispan.interceptors.InvocationContextInterceptor.handleAll(InvocationContextInterceptor.java:58)
> 	at org.infinispan.interceptors.InvocationContextInterceptor.handleDefault(InvocationContextInterceptor.java:39)
> 	at org.infinispan.commands.AbstractVisitor.visitGetKeyValueCommand(AbstractVisitor.java:87)
> 	at org.infinispan.commands.read.GetKeyValueCommand.acceptVisitor(GetKeyValueCommand.java:58)
> 	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
> 	at org.infinispan.interceptors.BatchingInterceptor.handleDefault(BatchingInterceptor.java:76)
> 	at org.infinispan.commands.AbstractVisitor.visitGetKeyValueCommand(AbstractVisitor.java:87)
> 	at org.infinispan.commands.read.GetKeyValueCommand.acceptVisitor(GetKeyValueCommand.java:58)
> 	at org.infinispan.interceptors.InterceptorChain.invoke(InterceptorChain.java:271)
> 	at org.infinispan.CacheDelegate.get(CacheDelegate.java:200)
> 	at org.infinispan.atomic.AtomicHashMapProxy.getDeltaMapForRead(AtomicHashMapProxy.java:73)
> 	at org.infinispan.atomic.AtomicHashMapProxy.getDeltaMapForWrite(AtomicHashMapProxy.java:95)
> 	at org.infinispan.atomic.AtomicHashMapProxy.put(AtomicHashMapProxy.java:154)
> 	at org.infinispan.tree.TreeCacheImpl.put(TreeCacheImpl.java:336)
> 	at org.infinispan.loaders.TreeCacheWithLoaderTest.testDuplicatePersistence(TreeCacheWithLoaderTest.java:81)

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