[infinispan-issues] [JBoss JIRA] (ISPN-4002) Allow the reduce phase to store elements into an intermediate cache

Allow the reduce phase to store elements into an intermediate cache -------------------------------------------------------------------- Key: ISPN-4002 URL: https://issues.jboss.org/browse/ISPN-4002 Project: Infinispan Issue Type: Feature Request Components: Core, Distributed Execution and Map/Reduce Reporter: Mircea Markus Assignee: Vladimir Blagojevic In the situation in which the result of the Map/Reduce task is large, returning it to the originator does not work, as the originator would run OOM. In order to drop this limitation, would be good to: - have a result cache - put all the M/R entries into this result cache It should be possible to specify this cache to the Map/Reduce task to be executed (cache name), as users might reuse the cache and configure it externally. The caller will be notified once the data Map/Reduce is finished. We'd need a way for the user to get all the keys in this cache for further processing.