Author Archives: Alex Moundalexis, Santosh Kumar, Justin Erickson, and Laurel Hale

How To Set Up a Shared Amazon RDS as Your Hive Metastore

Categories: Cloud Hadoop Hive How-to Impala Spark Use Case

Before CDH 5.10, every CDH cluster had to have its own Apache Hive Metastore (HMS) backend database. This model is ideal for clusters where each cluster contains the data locally along with the metadata. In the cloud, however, many CDH clusters run directly on a shared object store (like Amazon S3), making it possible for the data to live across multiple clusters and beyond any cluster’s lifespan. In this scenario clusters need to regenerate and coordinate metadata for the underlying shared data individually.

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