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.

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• accumulo.instance.name
• accumulo.zookeepers
• accumulo.user.name
• accumulo.user.pass

 For those familiar with Accumulo, these four configurations are the normal configuration values necessary to connect to Accumulo: the Accumulo instance name, the ZooKeeper quorum (comma-separated list of hosts), and Accumulo username and password. The easiest way to provide these values is by using the -hiveconf option to the hive command. It is expected that the Accumulo user provided either has the ability to create new tables, or that the Hive queries will only be accessing existing Accumulo tables.