Spark connector fails with CCE when compatibility mode is enabled ----------------------------------------------------------------- Key: ISPN-6543 URL: https://issues.jboss.org/browse/ISPN-6543 Project: Infinispan Issue Type: Bug Components: Spark Reporter: Vojtech Juranek Assignee: Gustavo Fernandes Fix For: 9.0.0.Alpha2, 8.2.2.Final Fails with {noformat} org.infinispan.client.hotrod.exceptions.HotRodClientException:Request for messageId=125 returned server error (status=0x85): java.lang.ClassCastException: java.lang.Integer cannot be cast to [B at org.infinispan.client.hotrod.impl.protocol.Codec20.checkForErrorsInResponseStatus(Codec20.java:343) at org.infinispan.client.hotrod.impl.protocol.Codec20.readPartialHeader(Codec20.java:132) at org.infinispan.client.hotrod.impl.protocol.Codec20.readHeader(Codec20.java:118) at org.infinispan.client.hotrod.impl.operations.HotRodOperation.readHeaderAndValidate(HotRodOperation.java:56) at org.infinispan.client.hotrod.impl.operations.IterationNextOperation.execute(IterationNextOperation.java:48) at org.infinispan.client.hotrod.impl.iteration.RemoteCloseableIterator.fetch(RemoteCloseableIterator.java:100) at org.infinispan.client.hotrod.impl.iteration.RemoteCloseableIterator.hasNext(RemoteCloseableIterator.java:84) at org.infinispan.spark.rdd.InfinispanIterator.hasNext(InfinispanIterator.scala:13) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:327) at org.apache.spark.util.random.SamplingUtils$.reservoirSampleAndCount(SamplingUtils.scala:41) at org.apache.spark.RangePartitioner$$anonfun$9.apply(Partitioner.scala:261) at org.apache.spark.RangePartitioner$$anonfun$9.apply(Partitioner.scala:259) at org.apache.spark.rdd.RDD$$anonfun$mapPartitionsWithIndex$1$$anonfun$apply$22.apply(RDD.scala:745) at org.apache.spark.rdd.RDD$$anonfun$mapPartitionsWithIndex$1$$anonfun$apply$22.apply(RDD.scala:745) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306) at org.apache.spark.rdd.RDD.iterator(RDD.scala:270) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:66) at org.apache.spark.scheduler.Task.run(Task.scala:89) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:213) {noformat}