custom_precommit_validator.scala

import org.apache.hudi.client.validator.SparkPreCommitValidator
import org.apache.spark.sql.Dataset
import org.apache.spark.sql.Row

class CustomPreCommitValidator extends SparkPreCommitValidator {

  override def validateRecordsBeforeAndAfter(before: Dataset[Row], 
  after: Dataset[Row], partitionsAffected: Set[String]): Unit = {
    // Custom validation logic
    // Perform data quality checks, apply business rules, etc.
  }
}