Supported Compression Formats - Teradata Vantage

Teradata® Open Table Format for Apache Iceberg and Delta Lake User Guide

Deployment
VantageCloud
VantageCore
Edition
VMware
Enterprise
IntelliFlex
Lake
Product
Teradata Vantage
Release Number
20.00
Published
October 2025
ft:locale
en-US
ft:lastEdition
2025-10-25
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External data may arrive from an object in a compressed format. The following are compression types supported for the supported file formats:

Iceberg

  Parquet ORC AVRO
SNAPPY Yes Yes Yes
ZSTD (zstandard) Yes Yes Yes
ZLIB No Yes No
LZ4 No Yes No
GZIP (deflate) Yes No Yes
LZO No No No

ZSTD compression is the default for Iceberg - it provides a good compression ratio without compromising the read/write performance. Snappy provides a good read/write performance; however, its compressions ratio is lower than ZSTD or GZIP. If the storage costs permits, Snappy is a better compression choice.

Delta Lake

  Parquet
SNAPPY Yes
ZSTD (zstandard) No
ZLIB No
LZ4 No
GZIP (deflate) Yes
LZO Yes