zeruibao commented on code in PR #41052:
URL: https://github.com/apache/spark/pull/41052#discussion_r1189110112
##########
connector/avro/src/test/scala/org/apache/spark/sql/avro/AvroSuite.scala:
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@@ -639,6 +640,39 @@ abstract class AvroSuite
}
}
+ test("SPARK-43380: Fix Avro data type conversion issues to avoid producing
incorrect results") {
+ withTempPath { path =>
+ sql("SELECT 13.1234567890 a").write.format("avro").save(path.toString)
+ // With the flag disabled, we will throw an exception if there is a
mismatch
+ val e = intercept[SparkException] {
+ spark.read.schema("a DECIMAL(4,
3)").format("avro").load(path.toString).collect()
+ }
+ val confKey =
SQLConf.LEGACY_AVRO_ALLOW_READING_WITH_INCOMPATIBLE_SCHEMA.key
+ ExceptionUtils.getRootCause(e) match {
+ case ex: IncompatibleSchemaException =>
+ assert(ex.getMessage.contains(confKey))
+ case other =>
+ fail(s"Received unexpected exception", other)
+ }
+ // The following used to work, so it should still work with the flag
enabled
+ checkAnswer(
+ spark.read.schema("a DECIMAL(5,
3)").format("avro").load(path.toString),
+ Row(new java.math.BigDecimal("13.123"))
+ )
+ withSQLConf(confKey -> "true") {
Review Comment:
actually I have one above. But I can use `withSQLConf(confKey -> "false") {`
explicitly to make it clear.
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