Large quantities of data can be processed and/or queried relatively quickly using a combination of continuous event processing and a Map-Reduce algorithmic tool. The continuous event processor can continuously produce real-time results by merging (a) CQL query results from events received since a currently executing Map-Reduce job was started with (b) a most recent query result produced by a most recently completed Map-Reduce job. When the currently executing Map-Reduce job completes, its query result can be stored and made accessible to the continuous event processor, and a new Map-Reduce job can be started relative to event data that has grown in size since the execution of the last Map-Reduce job. The Map-Reduce algorithmic tool provides a convenient mechanism for analyzing and processing large quantities of data.