Help Center> MapReduce Service> Component Operation Guide (LTS)> Using Hudi> Hudi Schema Evolution> SparkSQL Schema Evolution and Syntax Description> Enabling Schema Evolution

Updated on 2024-05-29 GMT+08:00

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Enabling Schema Evolution

Schema evolution cannot be disabled once being enabled.
This section applies only to MRS 3.2.0 and earlier versions.

To use spark-beeline, log in to FusionInsight Manager, choose Cluster > Services > Spark2x, and click the Configurations tab then the All Configurations sub-tab.
Search for spark.sql.extensions in the search box and change its value of JDBCServer to org.apache.spark.sql.hive.FISparkSessionExtension,org.apache.spark.sql.hudi.HoodieSparkSessionExtension,org.apache.spark.sql.hive.CarbonInternalExtensions.

For SQL operations, run the following command before running any SQL statements:
```
set hoodie.schema.evolution.enable=true
```
For API calls, specify the following parameter in DataFrame options:
```
hoodie.schema.evolution.enable -> true
```

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