viirya commented on a change in pull request #31888:
URL: https://github.com/apache/spark/pull/31888#discussion_r598974589
##########
File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/encoders/ExpressionEncoderSuite.scala
##########
@@ -203,6 +203,36 @@ class ExpressionEncoderSuite extends
CodegenInterpretedPlanTest with AnalysisTes
encodeDecodeTest(Array(Option(InnerClass(1))), "array of optional inner
class")
+ // NOTE: branch-2.4 does not have the interpreted implementation of
SafeProjection, so
+ // it does not fall back into the interpreted mode if the compilation fails.
+ // Therefore, the test in this PR just checks that the compilation error
happens
+ // instead of checking that the interpreted mode works well.
+ private def checkCompilationError[T : ExpressionEncoder](
+ input: T,
+ testName: String): Unit = {
+ testAndVerifyNotLeakingReflectionObjects(s"compilation error: $testName:
$input") {
+ val encoder = implicitly[ExpressionEncoder[T]]
+ val row = encoder.toRow(input)
+ val boundEncoder = encoder.resolveAndBind()
+ val errMsg = intercept[RuntimeException] {
+ boundEncoder.fromRow(row)
+ }.getCause.getMessage
+ assert(errMsg.contains("failed to compile: "))
Review comment:
Is this the compilation error?
```
[info] Cause: org.codehaus.commons.compiler.CompileException: File
'generated.java', Line 32, Column 124: failed to compile:
org.codehaus.commons.compiler.CompileException: File 'generated.java', Line 32,
Column 124: "org.apache.
spark.sql.catalyst.encoders.ExpressionEncoderSuite$MalformedClassObject$"
has no member type
"ExpressionEncoderSuite$MalformedClassObject$MalformedNameExample"
```
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