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cascalog.in-memory.platform
The In-Memory platform enables Cascalog to query data without the need for Hadoop. Instead, the data is manipulated entirely in-memory using just Clojure.
First, Cascalog converts the generators into tuples (which are just a sequence of maps). Cascalog then maps, filters, and aggregates the tuples. Finally, it uses sinks to output the resulting tuples.
The In-Memory platform enables Cascalog to query data without the need for Hadoop. Instead, the data is manipulated entirely in-memory using just Clojure. First, Cascalog converts the generators into tuples (which are just a sequence of maps). Cascalog then maps, filters, and aggregates the tuples. Finally, it uses sinks to output the resulting tuples.
agg-clojurecljmultimethod
Allow various types of aggregate operations for the collection. Cascalog aggregate types are defined in cascalog.logic.def.
Allow various types of aggregate operations for the collection. Cascalog aggregate types are defined in cascalog.logic.def.
aggregate-tuplesclj
(aggregate-tuples aggregators sorted-tuples)ISinkcljprotocol
to-sinkclj
(to-sink sink tuples fields)op-clojurecljmultimethod
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