Hive Accumulo Integration

Overview

Apache Accumulo is a sorted, distributed key-value store based on the Google BigTable paper. The API methods that Accumulo provides are in terms of Keys and Values which present the highest level of flexibility in reading and writing data; however, higher-level query abstractions are typically an exercise left to the user. Leveraging Apache Hive as a SQL interface to Accumulo complements its existing high-throughput batch access and low-latency random lookups.

Implementation

The initial implementation was added to Hive 0.14 in HIVE-7068. There are two main components which make up the implementation: the AccumuloStorageHandler and the AccumuloPredicateHandler. The AccumuloStorageHandler is a StorageHandler implementation,