Map/Reduce job fails with the wrong explanation on underlying TimeoutException ------------------------------------------------------------------------------ Key: ISPN-4677 URL: https://issues.jboss.org/browse/ISPN-4677 Project: Infinispan Issue Type: Bug Security Level: Public(Everyone can see) Components: Distributed Execution and Map/Reduce Affects Versions: 7.0.0.Beta1 Reporter: Sanne Grinovero Assignee: Vladimir Blagojevic Fix For: 7.0.0.Beta2 I'm running a task which is throwing the following exception during the Map phase: {noformat} org.infinispan.util.concurrent.TimeoutException: Node main-NodeC-22183 timed out{noformat} The user facing error however is this very confusing message: {noformat}org.infinispan.commons.CacheException: java.util.concurrent.ExecutionException: Map phase executing at main-NodeA-39904 did not complete within 0 sec timeout{noformat} I have no timeout enabled. The problem is the instanceof operation on the cause of the error in org.infinispan.distexec.mapreduce.MapReduceTask.executeMapPhaseWithLocalReduction(Map<KOut, VOut>): the check on the type only is not good enough.