Evolution Introduction

Schema evolution allows users to easily change the current schema of a Hudi table to adapt to the data that is changing over time.

This topic is available for MRS 3.2.0 or later versions only.

Schema evolution scenarios

Columns (including nested columns) can be added, deleted, modified, and moved.
Partition columns cannot be evolved.
You cannot add, delete, or perform operations on nested columns of the Array type.

**Table 1** Engines supported
Component	DDL Operation	Hudi Table Write Operation	Hudi Table Read Operation	Hudi Table Compaction Operation
SparkSQL	Y	Y	Y	Y
Flink	N	Y	Y	Y
HetuEngine	N	N	Y	N
Hive	N	N	Y	N

Parent topic: Hudi Schema Evolution

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