zeruibao commented on code in PR #41052:
URL: https://github.com/apache/spark/pull/41052#discussion_r1213739528
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala:
##########
@@ -4209,6 +4209,18 @@ object SQLConf {
.booleanConf
.createWithDefault(false)
+ val LEGACY_AVRO_ALLOW_INCOMPATIBLE_SCHEMA =
+ buildConf("spark.sql.legacy.avro.allowIncompatibleSchema")
+ .internal()
+ .doc("When set to false, if types in Avro are encoded in the same
format, but " +
+ "the type in the Avro schema explicitly says that the data types are
different, " +
+ "reject reading the data type in the format to avoid returning
incorrect results." +
Review Comment:
sg!
##########
core/src/main/resources/error/error-classes.json:
##########
@@ -64,6 +64,16 @@
}
}
},
+ "AVRO_INCORRECT_TYPE" : {
+ "message" : [
+ "Cannot convert Avro <avroPath> to SQL <sqlPath> because the original
encoded data type is <avroType>, however you're trying to read the field as
<sqlType>, which would lead to an incorrect answer. To allow reading this
field, enable the SQL configuration: `<key>`."
Review Comment:
sg!
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