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https://issues.apache.org/jira/browse/IGNITE-5041?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrey Gura updated IGNITE-5041:
--------------------------------
Fix Version/s: 2.0
> NPE during deadlock detection because cache isn't started on node
> -----------------------------------------------------------------
>
> Key: IGNITE-5041
> URL: https://issues.apache.org/jira/browse/IGNITE-5041
> Project: Ignite
> Issue Type: Bug
> Components: cache
> Affects Versions: 1.7
> Reporter: Andrey Gura
> Assignee: Andrey Gura
> Fix For: 2.0
>
>
> NPE is possible during deadlock detection process in case when one of
> participating cache isn't started on node that initiates transaction:
> {noformat}
> Exception in thread "sys-#66%transactions.TxDeadlockNpeClientTest1%"
> java.lang.NullPointerException
> at
> org.apache.ignite.internal.processors.cache.transactions.IgniteTxKey.finishUnmarshal(IgniteTxKey.java:92)
> at
> org.apache.ignite.internal.processors.cache.transactions.TxLocksResponse.finishUnmarshal(TxLocksResponse.java:190)
> at
> org.apache.ignite.internal.processors.cache.transactions.IgniteTxManager$DeadlockDetectionListener.unmarshall(IgniteTxManager.java:2588)
> at
> org.apache.ignite.internal.processors.cache.transactions.IgniteTxManager$DeadlockDetectionListener.onMessage(IgniteTxManager.java:2478)
> at
> org.apache.ignite.internal.managers.communication.GridIoManager.invokeListener(GridIoManager.java:1082)
> at
> org.apache.ignite.internal.managers.communication.GridIoManager.processRegularMessage0(GridIoManager.java:710)
> at
> org.apache.ignite.internal.managers.communication.GridIoManager.access$1700(GridIoManager.java:102)
> at
> org.apache.ignite.internal.managers.communication.GridIoManager$5.run(GridIoManager.java:673)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
> *Steps to reproduce:*
> # Start server node with two caches.
> # Start two transactions on server node that involve both caches and lead to
> deadlock.
> # Start client node and create only one cache
> # Start transaction on client node that will try to update key that involved
> into deadlock
> As result transaction on client node will hang until deadlock detection
> timeout happens.
> The same result could be achived using node filters for caches.
> *Workaround:*
> Start all caches on node if possible.
> Another way is deadlock detection disabling using JVM parameter
> {{-DIGNITE_TX_DEADLOCK_DETECTION_MAX_ITERS=0}}
> *Possible solution:*
> Try to create {{CacheObjectContext}} without starting of the cache.
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