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https://issues.apache.org/jira/browse/SPARK-21905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16158496#comment-16158496
]
Kazuaki Ishizaki commented on SPARK-21905:
--
While I ran the following code (I do not have PointUDT and Point classes), I
cannot see the exception using master branch or branch-2.2.
{code}
...
import org.apache.spark.sql.catalyst.encoders._
...
import org.apache.spark.sql.types._
test("SPARK-21905") {
val schema = StructType(List(
StructField("name", DataTypes.StringType, true),
StructField("location", new ExamplePointUDT, true)))
val rowRdd = sqlContext.sparkContext.parallelize(Seq("bluejoe", "alex"), 4)
.map({ x: String => Row.fromSeq(Seq(x, new ExamplePoint(100, 100))) })
val dataFrame = sqlContext.createDataFrame(rowRdd, schema)
dataFrame.createOrReplaceTempView("person")
sqlContext.sql("SELECT * FROM person").foreach(println(_))
}
{code}
> ClassCastException when call sqlContext.sql on temp table
> -
>
> Key: SPARK-21905
> URL: https://issues.apache.org/jira/browse/SPARK-21905
> Project: Spark
> Issue Type: Bug
> Components: SQL
>Affects Versions: 2.2.0
>Reporter: bluejoe
>
> {code:java}
> val schema = StructType(List(
> StructField("name", DataTypes.StringType, true),
> StructField("location", new PointUDT, true)))
> val rowRdd = sqlContext.sparkContext.parallelize(Seq("bluejoe", "alex"),
> 4).map({ x: String ⇒ Row.fromSeq(Seq(x, Point(100, 100))) });
> val dataFrame = sqlContext.createDataFrame(rowRdd, schema)
> dataFrame.createOrReplaceTempView("person");
> sqlContext.sql("SELECT * FROM person").foreach(println(_));
> {code}
> the last statement throws exception:
> {code:java}
> Caused by: java.lang.ClassCastException:
> org.apache.spark.sql.catalyst.expressions.GenericRow cannot be cast to
> org.apache.spark.sql.catalyst.InternalRow
> at
> org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection.evalIfFalseExpr1$(Unknown
> Source)
> at
> org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection.apply(Unknown
> Source)
> at
> org.apache.spark.sql.catalyst.encoders.ExpressionEncoder.toRow(ExpressionEncoder.scala:287)
> ... 18 more
> {code}
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