[infinispan-issues] [JBoss JIRA] (ISPN-3386) Cancel Map/Reduce tasks before they cause OOM errors

[Alan Field (JIRA)]

Alan Field created ISPN-3386:
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             Summary: Cancel Map/Reduce tasks before they cause OOM errors
                 Key: ISPN-3386
                 URL: https://issues.jboss.org/browse/ISPN-3386
             Project: Infinispan
          Issue Type: Enhancement
          Components: Distributed Execution and Map/Reduce
    Affects Versions: 5.3.0.Final
            Reporter: Alan Field
            Assignee: Mircea Markus


Currently, a MapReduceTask that generates an OutOfMemory error will break a clustered cache. The node where the OOM occurs will generate SuspectExceptions on the other nodes in the cluster.

In order to avoid this situation, Infinispan should monitor free memory and cancel the MapReduceTask if free memory is below a user definable threshold. [~pruivo] has also suggested allowing the API user to set the priority of tasks, so that the Map Reduce Manager can cancel lower priority tasks first. This functional could also be included with ISPN-2991.

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