[HUDI-2131] Exception Throw Out When MergeInto With Decimal Type Field (#3224)

hudi-spark-datasource/hudi-spark/src/test/scala/org/apache/spark/sql/hudi/TestHoodieSqlBase.scala

@@ -86,4 +86,11 @@ class TestHoodieSqlBase extends FunSuite with BeforeAndAfterAll {
         assertResult(errorMsg)(e.getMessage)
     }
   }
+
+  protected def removeQuotes(value: Any): Any = {
+    value match {
+      case s: String => s.stripPrefix("'").stripSuffix("'")
+      case _=> value
+    }
+  }
 }

hudi-spark-datasource/hudi-spark/src/test/scala/org/apache/spark/sql/hudi/TestInsertTable.scala

@@ -277,11 +277,4 @@ class TestInsertTable extends TestHoodieSqlBase {
         " count: 3，columns: (1,a1,10)"
     )
   }
-
-  private def removeQuotes(value: Any): Any = {
-    value match {
-      case s: String => s.stripPrefix("'").stripSuffix("'")
-      case _=> value
-    }
-  }
 }

hudi-spark-datasource/hudi-spark/src/test/scala/org/apache/spark/sql/hudi/TestMergeIntoTable.scala

@@ -20,7 +20,6 @@ package org.apache.spark.sql.hudi
 import org.apache.hudi.{DataSourceReadOptions, HoodieDataSourceHelpers}
 import org.apache.hudi.common.fs.FSUtils
 
-
 class TestMergeIntoTable extends TestHoodieSqlBase {
 
   test("Test MergeInto Basic") {
@@ -687,4 +686,50 @@ class TestMergeIntoTable extends TestHoodieSqlBase {
       }
     }
   }
+
+  test("Test MereInto With All Kinds Of DataType") {
+    withTempDir { tmp =>
+      val dataAndTypes = Seq(
+        ("string", "'a1'"),
+        ("int", "10"),
+        ("bigint", "10"),
+        ("double", "10.0"),
+        ("float", "10.0"),
+        ("decimal(5,2)", "10.11"),
+        ("decimal(5,0)", "10"),
+        ("timestamp", "'2021-05-20 00:00:00'"),
+        ("date", "'2021-05-20'")
+      )
+      dataAndTypes.foreach { case (dataType, dataValue) =>
+        val tableName = generateTableName
+        spark.sql(
+          s"""
+             |create table $tableName (
+             |  id int,
+             |  name string,
+             |  value $dataType,
+             |  ts long
+             |) using hudi
+             | location '${tmp.getCanonicalPath}/$tableName'
+             | options (
+             |  primaryKey ='id',
+             |  preCombineField = 'ts'
+             | )
+       """.stripMargin)
+
+        spark.sql(
+          s"""
+             |merge into $tableName h0
+             |using (
+             | select 1 as id, 'a1' as name, cast($dataValue as $dataType) as value, 1000 as ts
+             | ) s0
+             | on h0.id = s0.id
+             | when not matched then insert *
+             |""".stripMargin)
+        checkAnswer(s"select id, name, cast(value as string), ts from $tableName")(
+          Seq(1, "a1", removeQuotes(dataValue), 1000)
+        )
+      }
+    }
+  }
 }