Today’s services rely on massive amount of data to be processed, but require at the same time to be fast and responsive. Building fast services on big data batch- oriented frameworks is definitely a challenge. At ING, we have worked on a stack that can alleviate this problem. Namely, we materialize data model by map-reducing Hadoop queries from Hive to Cassandra. Instead of sinking the results back to hdfs, we propagate the results into Cassandra key-values tables. Those Cassandra tables are finally exposed via a http API front-end service.
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