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https://issues.apache.org/jira/browse/IGNITE-9160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16790641#comment-16790641
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Ignite TC Bot commented on IGNITE-9160:
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{panel:title=--> Run :: All: No blockers
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[TeamCity *--> Run :: All*
Results|https://ci.ignite.apache.org/viewLog.html?buildId=3294124&buildTypeId=IgniteTests24Java8_RunAll]
> FindBugs: NPE and CCE on equals() methods
> -----------------------------------------
>
> Key: IGNITE-9160
> URL: https://issues.apache.org/jira/browse/IGNITE-9160
> Project: Ignite
> Issue Type: Bug
> Components: cache
> Affects Versions: 2.6
> Reporter: Nikolai Kulagin
> Assignee: Nikolai Kulagin
> Priority: Minor
> Labels: newbie
> Fix For: 2.8
>
>
> Some classes have Incorrect equals() method:
> {code:java}
> // GridDhtPartitionMap.java
> @Override public boolean equals(Object o) {
> if (this == o)
> return true;
> GridDhtPartitionMap other = (GridDhtPartitionMap)o;
> return other.nodeId.equals(nodeId) && other.updateSeq == updateSeq;
> }{code}
> In this case, we can get CCE
> {code:java}
> GridDhtPartitionMap gridDhtPartMap = new GridDhtPartitionMap();
> gridDhtPartMap.equals(new Object());
> --------------------------------------------------------------
> Exception in thread "main" java.lang.ClassCastException: java.lang.Object
> cannot be cast to
> org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionMap
> at
> org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionMap.equals(GridDhtPartitionMap.java:319)
> at ru.zzzadruga.Ignite.main(Ignite.java:9){code}
> Or NPE
> {code:java}
> GridDhtPartitionMap gridDhtPartMap = new GridDhtPartitionMap();
> gridDhtPartMap.equals(null);
> --------------------------------------------------------------
> Exception in thread "main" java.lang.NullPointerException
> at
> org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionMap.equals(GridDhtPartitionMap.java:321)
> at ru.zzzadruga.Ignite.main(Ignite.java:9){code}
> The following code will prevent this
> {code:java}
> if (o == null || getClass() != o.getClass())
> return false;{code}
> + List of classes with similar problems: +
> * *GridTopic$T1-T8* - NPE
> * *GridCachePreloadLifecycleAbstractTest -* NPE
> * *GridDhtPartitionFullMap -* NPE and CCE
> * *GridDhtPartitionMap -* NPE and CCE
> * *OptimizedMarshallerSelfTest -* NPE and CCE
> * *GatewayProtectedCacheProxy -* NPE and CCE
> * *GridNearOptimisticTxPrepareFuture -* NPE and CCE
> * *GridCacheDistributedQueryManager -* NPE and CCE
> * *GridServiceMethodReflectKey -* NPE and CCE
> * *GridListSetSelfTest -* NPE and CCE
> * *GridTestKey -* NPE and CCE
> * *GridCacheMvccCandidate -* CCE
> * *GridDhtPartitionExchangeId -* CCE
> * *GridTuple6 -* CCE
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