Maxim Gekk created SPARK-30892:
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Summary: Exclude spark.sql.variable.substitute.depth from
removedSQLConfigs
Key: SPARK-30892
URL: https://issues.apache.org/jira/browse/SPARK-30892
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.0.0
Reporter: Maxim Gekk
The spark.sql.variable.substitute.depth SQL config is not used since Spark 2.4
inclusively. By the [https://github.com/apache/spark/pull/27169], the config
was placed to SQLConf.removedSQLConfigs. And as a consequence of that when an
user set it non-default value (1 for example), he/she will get an exception.
It is acceptable for configs that could impact on the behavior but not for this
particular config. Raising of such exception will just make migration to Spark
more difficult.
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