[infinispan-issues] [JBoss JIRA] Resolved: (ISPN-903) CacheStore throws a NPE when preparing a transaction which includes a key it doesn't own

[Galder Zamarreño (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-903?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Galder Zamarreño resolved ISPN-903.
-----------------------------------

    Fix Version/s: 4.2.1.CR2
                   5.0.0.ALPHA3
       Resolution: Done


> CacheStore throws a NPE when preparing a transaction which includes a key it doesn't own
> ----------------------------------------------------------------------------------------
>
>                 Key: ISPN-903
>                 URL: https://issues.jboss.org/browse/ISPN-903
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Distributed Cache, Loaders and Stores, Transactions
>    Affects Versions: 4.2.0.Final
>            Reporter: Manik Surtani
>            Assignee: Manik Surtani
>            Priority: Critical
>              Labels: NPE
>             Fix For: 4.2.1.CR2, 4.2.1.Final, 5.0.0.ALPHA3
>
>
> When a transaction is prepared, the {{PrepareCommand}} is broadcast to all participants in the transaction.  However, recipients only replay Commands whose keys map to their node (by consulting the {{DistributionManager}}).  When the {{PrepareCommand}} reaches the {{CacheStoreInterceptor}}, however, the {{CacheStoreInterceptor}} is unable to handle all of the modifications in the prepare as it doesn't filter out modifications based on what is mapped to the node in question.  This results in a {{NullPointerExceptoion}} on the receiving node, which causes the transaction to abort:
> {code}
> java.lang.NullPointerException
> 	at org.infinispan.interceptors.CacheStoreInterceptor.getStoredEntry(CacheStoreInterceptor.java:337)
> 	at org.infinispan.interceptors.CacheStoreInterceptor$StoreModificationsBuilder.visitPutKeyValueCommand(CacheStoreInterceptor.java:288)
> 	at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:72)
> 	at org.infinispan.interceptors.CacheStoreInterceptor.prepareCacheLoader(CacheStoreInterceptor.java:255)
> 	at org.infinispan.interceptors.CacheStoreInterceptor.visitPrepareCommand(CacheStoreInterceptor.java:175)
> 	at org.infinispan.commands.tx.PrepareCommand.acceptVisitor(PrepareCommand.java:116)
> 	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.visitPrepareCommand(AbstractVisitor.java:106)
> 	at org.infinispan.commands.tx.PrepareCommand.acceptVisitor(PrepareCommand.java:116)
> 	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
> 	at org.infinispan.interceptors.NotificationInterceptor.visitPrepareCommand(NotificationInterceptor.java:48)
> 	at org.infinispan.commands.tx.PrepareCommand.acceptVisitor(PrepareCommand.java:116)
> 	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
> 	at org.infinispan.interceptors.TxInterceptor.visitPrepareCommand(TxInterceptor.java:103)
> 	at org.infinispan.interceptors.DistTxInterceptor.visitPrepareCommand(DistTxInterceptor.java:59)
> 	at org.infinispan.commands.tx.PrepareCommand.acceptVisitor(PrepareCommand.java:116)
> 	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
> 	at org.infinispan.interceptors.InvocationContextInterceptor.handleAll(InvocationContextInterceptor.java:87)
> 	at org.infinispan.interceptors.InvocationContextInterceptor.handleDefault(InvocationContextInterceptor.java:58)
> 	at org.infinispan.commands.AbstractVisitor.visitPrepareCommand(AbstractVisitor.java:106)
> 	at org.infinispan.commands.tx.PrepareCommand.acceptVisitor(PrepareCommand.java:116)
> 	at org.infinispan.interceptors.InterceptorChain.invoke(InterceptorChain.java:273)
> 	at org.infinispan.commands.tx.PrepareCommand.perform(PrepareCommand.java:107)
> 	at org.infinispan.remoting.InboundInvocationHandlerImpl.handle(InboundInvocationHandlerImpl.java:94)
> 	at org.infinispan.remoting.transport.jgroups.CommandAwareRpcDispatcher.executeCommand(CommandAwareRpcDispatcher.java:179)
> 	at org.infinispan.remoting.transport.jgroups.CommandAwareRpcDispatcher.handle(CommandAwareRpcDispatcher.java:153)
> 	at org.jgroups.blocks.RequestCorrelator.handleRequest(RequestCorrelator.java:577)
> 	at org.jgroups.blocks.RequestCorrelator.receiveMessage(RequestCorrelator.java:488)
> 	at org.jgroups.blocks.RequestCorrelator.receive(RequestCorrelator.java:364)
> 	at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:770)
> 	at org.jgroups.JChannel.up(JChannel.java:1467)
> {code}

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