Overview

With IBM® Netezza® Performance Server for IBM Cloud Pak® for Data as a Service and watsonx.data you can connect to the Hive Metastore (HMS) which is a data lake metastore server and query from Apache Iceberg tables that live on your data lake S3 object store.

In technology preview:

• You must use Apache Iceberg tables with the parquet file format.
• Your queries are limited to SELECT operations.
• Iceberg tables cannot be read if they were altered and underwent Iceberg schema evolution.
• LZ4 data compression format is supported.
• NETEZZA_SCHEMA is the default schema when you connect to a data lake database. It is a regular schema which contains Netezza objects like tables, external tables, and sequences. NETEZZA_SCHEMA, DEFINITON_SCHEMA, and INFORMATION_SCHEMA schema names are all reserved, and schemas of those names in the metastore are not exposed to NPSaaS users.
• The following datatypes are not supported:
  • timestamptz
  • uuid
  • struct
  • list
  • map

Use cases for watsonx.data include:

• Integrating NPSaaS with watsonx.data.
• Running queries against data that is stored in watsonx.data.
• Ingesting data from watsonx.data into NPSaaS.
• Querying both local and remote data from watsonx.data.