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https://issues.apache.org/jira/browse/IGNITE-16789?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Luchnikov Alexander updated IGNITE-16789:
-----------------------------------------
Labels: ise.lts (was: )
> Failure to dynamically create a new cache can be a cause of
> NullPointerException/AssertionError in the discovery thread
> -----------------------------------------------------------------------------------------------------------------------
>
> Key: IGNITE-16789
> URL: https://issues.apache.org/jira/browse/IGNITE-16789
> Project: Ignite
> Issue Type: Bug
> Reporter: Vyacheslav Koptilin
> Assignee: Vyacheslav Koptilin
> Priority: Major
> Labels: ise.lts
> Fix For: 2.14
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Simultaneous creating and removing a cache with the same name may lead to the
> following NullPointerException in the disco-notifier thread and this is the
> reason for triggering FailureHandler.
> {noformat}
> [2022-04-04
> 14:22:41,571][ERROR][disco-notifier-worker-#36%cache.IgniteDynamicCacheStartFailTest0%][GridDiscoveryManager]
> Exception in discovery notifier worker thread.
> java.lang.AssertionError: Dynamic cache descriptor is missing
> [cacheName=TestDynamicCache]
> at
> org.apache.ignite.internal.processors.cache.ClusterCachesInfo.onCacheChangeRequested(ClusterCachesInfo.java:570)
> at
> org.apache.ignite.internal.processors.cache.GridCacheProcessor.onCustomEvent(GridCacheProcessor.java:4307)
> at
> org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$4.onDiscovery0(GridDiscoveryManager.java:680)
> at
> org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$4.access$7500(GridDiscoveryManager.java:559)
> at
> org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$4$NotificationTask.run(GridDiscoveryManager.java:994)
> at
> org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$DiscoveryMessageNotifierWorker.body0(GridDiscoveryManager.java:2852)
> at
> org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$DiscoveryMessageNotifierWorker.body(GridDiscoveryManager.java:2890)
> at
> org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:125)
> at java.lang.Thread.run(Thread.java:748)
> {noformat}
> It looks like the issue is caused by the concurrent starting and stopping
> caches with the same names.
> The following scenario results in the AssertionError (in the case when
> assertions are disabled it will lead to the mentioned NullPointerException):
> - the user starts a new cache with the name "A"
> - he DynamicCacheChangeRequest is sent over the cluster ring
> - every node, that is received this message, updates its list of registered
> cache descriptors (see
> ClusterCachesInfo.onCacheChangeRequested(DynamicCacheChangeBatch,
> AffinityTopologyVersion))
> - a node initiates a new partition map exchange
> - user tries to stop cache with the same name "A"
> - new DynamicCacheChangeRequest is sent and, therefore it will clean up the
> list of registered caches
> - at this point, the previous exchange fails for some reason (PME that is
> related to cache start)
> - the DynamicCacheChangeFailureMessage is sent over the ring and tries to
> find the required cache descriptor on every node which is already removed.
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