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[SPARK-46679][SQL] Fix for SparkUnsupportedOperationException Not found an encoder of the type T, when using Parameterized class #48304

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[SPARK-46679][SQL] Fix for SparkUnsupportedOperationException Not found an encoder of the type T, when using Parameterized class #48304

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bf68efb
SPARK-46679 Fix for org.apache.spark.SparkUnsupportedOperationExcepti…
Sep 30, 2024
71ceb45
Merge branch 'master' into SPARK-46679
Sep 30, 2024
6f0071d
SPARK-46679 adding code which got missed in previous checkin
Oct 1, 2024
1b46c22
SPARK-46679 adding code which got missed in previous checkin
Oct 1, 2024
8cbc817
SPARK-46679 refactored code
Oct 1, 2024
a063f6c
SPARK-46679 added a property in bean to explicitly test nesting of sa…
Oct 1, 2024
9209722
SPARK-46679. implemented feedback to reduce test classes clutter
Oct 23, 2024
622089f
Merge branch 'master' into SPARK-46679
Oct 29, 2024
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4 changes: 3 additions & 1 deletion sql/api/src/main/scala/org/apache/spark/sql/catalyst/JavaTypeInference.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -138,7 +138,9 @@ object JavaTypeInference {
encoderFor(typeVariables(tv), seenTypeSet, typeVariables)

case pt: ParameterizedType =>
encoderFor(pt.getRawType, seenTypeSet, JavaTypeUtils.getTypeArguments(pt).asScala.toMap)
val newTvs = JavaTypeUtils.getTypeArguments(pt).asScala.toMap
val allTvs = newTvs ++ typeVariables.removedAll(newTvs.keySet)
encoderFor(pt.getRawType, seenTypeSet, allTvs)

case c: Class[_] =>
if (seenTypeSet.contains(c)) {
Expand Down
91 changes: 90 additions & 1 deletion sql/catalyst/src/test/java/org/apache/spark/sql/catalyst/JavaTypeInferenceBeans.java
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Expand Up @@ -17,6 +17,8 @@

package org.apache.spark.sql.catalyst;

import java.io.Serializable;

public class JavaTypeInferenceBeans {

static class JavaBeanWithGenericsA<T> {
Expand Down Expand Up @@ -78,5 +80,92 @@ static class JavaBeanWithGenericBase extends JavaBeanWithGenerics<String, String
static class JavaBeanWithGenericHierarchy extends JavaBeanWithGenericsABC<Integer> {

}
}

static class PersonData {
private String id;

public String getId() {
return id;
}

public void setId(String id) {
this.id = id;
}
}

static class Team<P> {
P person;

public P getPerson() {
return person;
}

public void setPerson(P person) {
this.person = person;
}
}

static class Company<T> {
String name;
Team<T> team;

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public Team<T> getTeam() {
return team;
}

public void setTeam(Team<T> team) {
this.team = team;
}
}

static class CompanyWrapper extends Company<PersonData> {
}

static class PersonDataSerializable extends PersonData implements Serializable {
}

static class TeamT<T extends Serializable> {
T person;

public T getPerson() {
return person;
}

public void setPerson(T person) {
this.person = person;
}
}

static class CompanyT<T extends Serializable> {
String name;
TeamT<T> team;

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public TeamT<T> getTeam() {
return team;
}

public void setTeam(TeamT<T> team) {
this.team = team;
}
}

static class CompanyWrapperT extends CompanyT<PersonDataSerializable> {
}

}
30 changes: 29 additions & 1 deletion sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/JavaTypeInferenceSuite.scala
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Expand Up @@ -24,7 +24,7 @@ import scala.beans.{BeanProperty, BooleanBeanProperty}
import scala.reflect.{classTag, ClassTag}

import org.apache.spark.SparkFunSuite
import org.apache.spark.sql.catalyst.JavaTypeInferenceBeans.{JavaBeanWithGenericBase, JavaBeanWithGenericHierarchy, JavaBeanWithGenericsABC}
import org.apache.spark.sql.catalyst.JavaTypeInferenceBeans.{CompanyWrapper, CompanyWrapperT, JavaBeanWithGenericBase, JavaBeanWithGenericHierarchy, JavaBeanWithGenericsABC, PersonData, PersonDataSerializable, Team, TeamT}
import org.apache.spark.sql.catalyst.encoders.{AgnosticEncoder, UDTCaseClass, UDTForCaseClass}
import org.apache.spark.sql.catalyst.encoders.AgnosticEncoders._
import org.apache.spark.sql.types.{DecimalType, MapType, Metadata, StringType, StructField, StructType}
Expand Down Expand Up @@ -279,4 +279,32 @@ class JavaTypeInferenceSuite extends SparkFunSuite {
))
assert(encoder === expected)
}

test("SPARK-46679: resolve generics with multi-level inheritance different type names") {
val encoder = JavaTypeInference.encoderFor(classOf[CompanyWrapper])
val expected =
JavaBeanEncoder(ClassTag(classOf[CompanyWrapper]), Seq(
encoderField("name", StringEncoder),
encoderField("team", JavaBeanEncoder(ClassTag(classOf[Team[PersonData]]), Seq(
encoderField("person", JavaBeanEncoder(ClassTag(classOf[PersonData]), Seq(
encoderField("id", StringEncoder)
)))
)))
))
assert(encoder === expected)
}

test("SPARK-46679: resolve generics with multi-level inheritance same type names") {
val encoder = JavaTypeInference.encoderFor(classOf[CompanyWrapperT])
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I spent a bit of time playing around with the test bean classes, and I think the actual minimal example to reproduce the bug is

  static class Foo<T> {
    T t;

    public void setT(T t) {
      this.t = t;
    }

    public T getT() {
      return t;
    }
  }
  static class InnerWrapper<U> {
    Foo<U> foo;

    public void setFoo(Foo<U> foo) {
      this.foo = foo;
    }

    public Foo<U> getFoo() {
      return foo;
    }
  }
  static class OuterWrapper extends InnerWrapper<String> {}

while I know this test case came from the user's report, I think it would actually be easier for another developer to understand the point of this test case with the more minimal example.

I do think there is value in having the test cases with both combos of names for the type parameters still.

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oops, sorry ignore this, I made a mistake posting my comments to github earlier. I meant to post this, but I think the simplification done already is fine

val expected =
JavaBeanEncoder(ClassTag(classOf[CompanyWrapperT]), Seq(
encoderField("name", StringEncoder),
encoderField("team", JavaBeanEncoder(ClassTag(classOf[TeamT[PersonDataSerializable]]), Seq(
encoderField("person", JavaBeanEncoder(ClassTag(classOf[PersonDataSerializable]), Seq(
encoderField("id", StringEncoder)
)))
)))
))
assert(encoder === expected)
}
}
33 changes: 29 additions & 4 deletions sql/core/src/test/java/test/org/apache/spark/sql/JavaDatasetSuite.java
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Original file line number Diff line number Diff line change
Expand Up @@ -899,6 +899,8 @@ public static class SimpleJavaBean implements Serializable {
private Map<Integer, String> g;
private Map<List<Long>, Map<String, String>> h;

private List<List<Long>> i;

public boolean isA() {
return a;
}
Expand Down Expand Up @@ -963,6 +965,14 @@ public void setH(Map<List<Long>, Map<String, String>> h) {
this.h = h;
}

public List<List<Long>> getI() {
return i;
}

public void setI(List<List<Long>> i) {
this.i = i;
}

@Override
public boolean equals(Object o) {
if (this == o) return true;
Expand All @@ -977,7 +987,8 @@ public boolean equals(Object o) {
if (!e.equals(that.e)) return false;
if (!f.equals(that.f)) return false;
if (!g.equals(that.g)) return false;
return h.equals(that.h);
if (!h.equals(that.h)) return false;
return i.equals(that.i);

}

Expand All @@ -991,6 +1002,7 @@ public int hashCode() {
result = 31 * result + f.hashCode();
result = 31 * result + g.hashCode();
result = 31 * result + h.hashCode();
result = 31 * result + i.hashCode();
return result;
}
}
Expand Down Expand Up @@ -1080,6 +1092,10 @@ public void testJavaBeanEncoder() {
Map<List<Long>, Map<String, String>> complexMap1 = new HashMap<>();
complexMap1.put(Arrays.asList(1L, 2L), nestedMap1);
obj1.setH(complexMap1);
List<Long> nestedList1 = List.of(1L, 2L, 3L);
List<Long> nestedList2 = List.of(4L, 5L, 6L);
List<List<Long>> complexList1 = List.of(nestedList1, nestedList2);
obj1.setI(complexList1);

SimpleJavaBean obj2 = new SimpleJavaBean();
obj2.setA(false);
Expand All @@ -1098,6 +1114,10 @@ public void testJavaBeanEncoder() {
Map<List<Long>, Map<String, String>> complexMap2 = new HashMap<>();
complexMap2.put(Arrays.asList(3L, 4L), nestedMap2);
obj2.setH(complexMap2);
List<Long> nestedList3 = List.of(1L, 2L, 7L);
List<Long> nestedList4 = List.of(4L, 5L, 8L);
List<List<Long>> complexList2 = List.of(nestedList3, nestedList4);
obj2.setI(complexList2);

List<SimpleJavaBean> data = Arrays.asList(obj1, obj2);
Dataset<SimpleJavaBean> ds = spark.createDataset(data, Encoders.bean(SimpleJavaBean.class));
Expand All @@ -1118,7 +1138,8 @@ public void testJavaBeanEncoder() {
Arrays.asList("a", "b"),
Arrays.asList(100L, null, 200L),
map1,
complexMap1});
complexMap1,
complexList1});
Row row2 = new GenericRow(new Object[]{
false,
30,
Expand All @@ -1127,7 +1148,9 @@ public void testJavaBeanEncoder() {
Arrays.asList("x", "y"),
Arrays.asList(300L, null, 400L),
map2,
complexMap2});
complexMap2,
complexList2});

StructType schema = new StructType()
.add("a", BooleanType, false)
.add("b", IntegerType, false)
Expand All @@ -1136,7 +1159,9 @@ public void testJavaBeanEncoder() {
.add("e", createArrayType(StringType))
.add("f", createArrayType(LongType))
.add("g", createMapType(IntegerType, StringType))
.add("h",createMapType(createArrayType(LongType), createMapType(StringType, StringType)));
.add("h",createMapType(createArrayType(LongType), createMapType(StringType, StringType)))
.add("i", createArrayType(createArrayType(LongType))) ;

Dataset<SimpleJavaBean> ds3 = spark.createDataFrame(Arrays.asList(row1, row2), schema)
.as(Encoders.bean(SimpleJavaBean.class));
Assertions.assertEquals(data, ds3.collectAsList());
Expand Down