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https://issues.apache.org/jira/browse/SPARK-21905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16152955#comment-16152955
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Marco Gaido commented on SPARK-21905:
-------------------------------------
This is likely to be caused by a bug in the Magellan package. It expects to
receive an InternalRow to deserialize but in this case it doesn't happen. So it
should be fixed there.
> 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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