The following considerations and limitations apply to generating column statistics.
Considerations
Using sampling to generate statistics reduces run time, but can generate inaccurate statistics.
Data Catalog doesn't store different versions of the statistics.
You can only run one statistics generation task at a time per table.
If a table is encrypted using customer AWS KMS key registered with Data Catalog, AWS Glue uses the same key to encrypt statistics.
Column statistics task supports generating statistics:
When the IAM role has full table permissions (IAM or Lake Formation).
When the IAM role has permissions on the table using Lake Formation hybrid access mode.
Column statistics task doesn’t support generating statistics for:
Tables with Lake Formation cell-based access control
Transactional data lakes - Linux foundation Delta Lake, Apache Hudi
Tables in federated databases - Hive metastore, Amazon Redshift datashares
Nested columns, arrays, and struct data types.
Table that is shared with you from another account
