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  1. Cassandra
  2. CASSANDRA-8448

"Comparison method violates its general contract" in AbstractEndpointSnitch

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Details

    • Bug
    • Status: Resolved
    • Normal
    • Resolution: Fixed
    • 2.0.13, 2.1.3
    • None
    • None
    • Normal

    Description

      Seen in both 1.2 and 2.0. The error is occurring here: https://github.com/apache/cassandra/blob/cassandra-2.0/src/java/org/apache/cassandra/locator/AbstractEndpointSnitch.java#L49

      ERROR [Thrift:9] 2014-12-04 20:12:28,732 CustomTThreadPoolServer.java (line 219) Error occurred during processing of message.
      com.google.common.util.concurrent.UncheckedExecutionException: java.lang.IllegalArgumentException: Comparison method violates its general contract!
      	at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2199)
      	at com.google.common.cache.LocalCache.get(LocalCache.java:3932)
      	at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3936)
      	at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4806)
      	at org.apache.cassandra.service.ClientState.authorize(ClientState.java:352)
      	at org.apache.cassandra.service.ClientState.ensureHasPermission(ClientState.java:224)
      	at org.apache.cassandra.service.ClientState.hasAccess(ClientState.java:218)
      	at org.apache.cassandra.service.ClientState.hasColumnFamilyAccess(ClientState.java:202)
      	at org.apache.cassandra.thrift.CassandraServer.createMutationList(CassandraServer.java:822)
      	at org.apache.cassandra.thrift.CassandraServer.batch_mutate(CassandraServer.java:954)
      	at com.datastax.bdp.server.DseServer.batch_mutate(DseServer.java:576)
      	at org.apache.cassandra.thrift.Cassandra$Processor$batch_mutate.getResult(Cassandra.java:3922)
      	at org.apache.cassandra.thrift.Cassandra$Processor$batch_mutate.getResult(Cassandra.java:3906)
      	at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
      	at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)
      	at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:201)
      	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
      	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
      	at java.lang.Thread.run(Thread.java:745)
      Caused by: java.lang.IllegalArgumentException: Comparison method violates its general contract!
      	at java.util.TimSort.mergeHi(TimSort.java:868)
      	at java.util.TimSort.mergeAt(TimSort.java:485)
      	at java.util.TimSort.mergeCollapse(TimSort.java:410)
      	at java.util.TimSort.sort(TimSort.java:214)
      	at java.util.TimSort.sort(TimSort.java:173)
      	at java.util.Arrays.sort(Arrays.java:659)
      	at java.util.Collections.sort(Collections.java:217)
      	at org.apache.cassandra.locator.AbstractEndpointSnitch.sortByProximity(AbstractEndpointSnitch.java:49)
      	at org.apache.cassandra.locator.DynamicEndpointSnitch.sortByProximityWithScore(DynamicEndpointSnitch.java:157)
      	at org.apache.cassandra.locator.DynamicEndpointSnitch.sortByProximityWithBadness(DynamicEndpointSnitch.java:186)
      	at org.apache.cassandra.locator.DynamicEndpointSnitch.sortByProximity(DynamicEndpointSnitch.java:151)
      	at org.apache.cassandra.service.StorageProxy.getLiveSortedEndpoints(StorageProxy.java:1408)
      	at org.apache.cassandra.service.StorageProxy.getLiveSortedEndpoints(StorageProxy.java:1402)
      	at org.apache.cassandra.service.AbstractReadExecutor.getReadExecutor(AbstractReadExecutor.java:148)
      	at org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:1223)
      	at org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:1165)
      	at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:255)
      	at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:225)
      	at org.apache.cassandra.auth.Auth.selectUser(Auth.java:243)
      	at org.apache.cassandra.auth.Auth.isSuperuser(Auth.java:84)
      	at org.apache.cassandra.auth.AuthenticatedUser.isSuper(AuthenticatedUser.java:50)
      	at org.apache.cassandra.auth.CassandraAuthorizer.authorize(CassandraAuthorizer.java:69)
      	at org.apache.cassandra.service.ClientState$1.load(ClientState.java:338)
      	at org.apache.cassandra.service.ClientState$1.load(ClientState.java:335)
      	at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3522)
      	at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2315)
      	at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2278)
      	at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2193)
      	... 18 more
      

      Workaround: Setting -Djava.util.Arrays.useLegacyMergeSort=true causes the error to go away.

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        2. 8448-v2.txt
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        3. 8448-v3.txt
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          Brandon Williams

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            brandon.williams Brandon Williams Assign to me
            jblangston@datastax.com J.B. Langston
            Brandon Williams
            Benedict Elliott Smith
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              Updated:
              Resolved:

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