[infinispan-issues] [JBoss JIRA] Resolved: (ISPN-200) Distributed queries

Distributed queries ------------------- Key: ISPN-200 URL: https://issues.jboss.org/browse/ISPN-200 Project: Infinispan Issue Type: Feature Request Components: Distributed Cache, Querying Reporter: Manik Surtani Assignee: Sanne Grinovero Priority: Critical Fix For: 5.1.0.ALPHA1, 5.1.0.FINAL The holy grail of querying. * Indexes are _never_ shared. * Each node maintains local indexes for state it is responsible for (-Dinfinispan.query.indexLocalOnly=true). * Indexes could be in memory or disk. * Queries themselves are distributed. * The query object is built and broadcast to the entire cluster. * Each node executes the query on its own _local_ index, returning results. * The calling node returns a CacheQuery impl that lazily fetches and collates results from the cluster. * I expect this Map/Reduce model to perform very well since the workload is split up and happens in parallel across multiple CPUs against much smaller (individual) datasets. * Works with all cache modes, including DIST. * Need to make sure duplicates are handled, as well as failover.