spark-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Kazuaki Ishizaki (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-21905) ClassCastException when call sqlContext.sql on temp table
Date Fri, 08 Sep 2017 11:32:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-21905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=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}



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org


Mime
View raw message