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From "Eric Shu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (GEODE-2799) ClassCastException: java.lang.Long cannot be cast to org.apache.geode.internal.cache.AbstractRegionEntry could occur in race condition
Date Tue, 18 Apr 2017 22:39:42 GMT
Eric Shu created GEODE-2799:
-------------------------------

             Summary: ClassCastException: java.lang.Long cannot be cast to org.apache.geode.internal.cache.AbstractRegionEntry
could occur in race condition
                 Key: GEODE-2799
                 URL: https://issues.apache.org/jira/browse/GEODE-2799
             Project: Geode
          Issue Type: Bug
          Components: transactions
            Reporter: Eric Shu


{noformat}
java.lang.ClassCastException: java.lang.Long cannot be cast to org.apache.geode.internal.cache.AbstractRegionEntry
at org.apache.geode.internal.cache.LocalRegionDataView.getKeyForIterator(LocalRegionDataView.java:203)
at org.apache.geode.internal.cache.TXStateProxyImpl.getKeyForIterator(TXStateProxyImpl.java:766)
at org.apache.geode.internal.cache.EntriesSet$EntriesIterator.moveNext(EntriesSet.java:159)
at org.apache.geode.internal.cache.EntriesSet$EntriesIterator.(EntriesSet.java:118)
at org.apache.geode.internal.cache.EntriesSet.iterator(EntriesSet.java:83)
at java.util.AbstractCollection.addAll(AbstractCollection.java:343)
at java.util.TreeSet.addAll(TreeSet.java:312)
at java.util.TreeSet.(TreeSet.java:160)
at org.apache.geode.internal.cache.BucketRegionQueue.initializeEventSeqNumQueue(BucketRegionQueue.java:145)
at org.apache.geode.internal.cache.BucketRegionQueue.cleanUpDestroyedTokensAndMarkGIIComplete(BucketRegionQueue.java:108)
at org.apache.geode.internal.cache.DistributedRegion.getInitialImageAndRecovery(DistributedRegion.java:1288)
at org.apache.geode.internal.cache.DistributedRegion.initialize(DistributedRegion.java:1080)
at org.apache.geode.internal.cache.BucketRegion.initialize(BucketRegion.java:251)
at org.apache.geode.internal.cache.LocalRegion.createSubregion(LocalRegion.java:960)
at org.apache.geode.internal.cache.PartitionedRegionDataStore.createBucketRegion(PartitionedRegionDataStore.java:736)
at org.apache.geode.internal.cache.PartitionedRegionDataStore.grabFreeBucket(PartitionedRegionDataStore.java:424)
at org.apache.geode.internal.cache.PartitionedRegionDataStore.grabFreeBucketRecursively(PartitionedRegionDataStore.java:282)
at org.apache.geode.internal.cache.PartitionedRegionDataStore.grabBucket(PartitionedRegionDataStore.java:2860)
at org.apache.geode.internal.cache.PartitionedRegionDataStore.handleManageBucketRequest(PartitionedRegionDataStore.java:1001)
at org.apache.geode.internal.cache.PRHARedundancyProvider.createBucketOnMember(PRHARedundancyProvider.java:1214)
at org.apache.geode.internal.cache.PRHARedundancyProvider.createBucketInstance(PRHARedundancyProvider.java:390)
at org.apache.geode.internal.cache.PRHARedundancyProvider.createBucketAtomically(PRHARedundancyProvider.java:578)
at org.apache.geode.internal.cache.PartitionedRegion.createBucket(PartitionedRegion.java:3257)
at org.apache.geode.internal.cache.partitioned.RegionAdvisor$BucketSet$BucketSetIterator.next(RegionAdvisor.java:1422)
at org.apache.geode.internal.cache.PartitionedRegion$KeysSet$KeysSetIterator.getNextBucketIter(PartitionedRegion.java:6247)
at org.apache.geode.internal.cache.PartitionedRegion$KeysSet$KeysSetIterator.hasNext(PartitionedRegion.java:6220)
at org.apache.geode.internal.cache.PartitionedRegion$KeysSet.toArray(PartitionedRegion.java:6322)
at org.apache.geode.internal.cache.PartitionedRegion$KeysSet.toArray(PartitionedRegion.java:6316)
at java.util.Collections$UnmodifiableCollection.toArray(Collections.java:1033)
at java.util.ArrayList.addAll(ArrayList.java:577)
{noformat}

KeySet createIterator in transaction always creates keyset(). When a transaction accesses
the items, it suspends the transaction and assumes the items provided by iterator are AbrstractRegionEntry.

    private void createIterator(final LocalRegion rgn) {
      // TX iterates over KEYS.
      // NonTX iterates over RegionEntry instances
      this.currRgn = rgn;
      this.currItr = view.getRegionKeysForIteration(rgn).iterator();
      this.additionalKeysFromView = view.getAdditionalKeysForIterator(rgn);
    }




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