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https://issues.apache.org/jira/browse/SPARK-12624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15124556#comment-15124556
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Cheng Lian commented on SPARK-12624:
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Yes, it should.
> When schema is specified, we should give better error message if actual row
> length doesn't match
> ------------------------------------------------------------------------------------------------
>
> Key: SPARK-12624
> URL: https://issues.apache.org/jira/browse/SPARK-12624
> Project: Spark
> Issue Type: Bug
> Components: PySpark, SQL
> Reporter: Reynold Xin
> Assignee: Cheng Lian
> Priority: Blocker
> Fix For: 1.6.1, 2.0.0
>
>
> The following code snippet reproduces this issue:
> {code}
> from pyspark.sql.types import StructType, StructField, IntegerType, StringType
> from pyspark.sql.types import Row
> schema = StructType([StructField("a", IntegerType()), StructField("b",
> StringType())])
> rdd = sc.parallelize(range(10)).map(lambda x: Row(a=x))
> df = sqlContext.createDataFrame(rdd, schema)
> df.show()
> {code}
> An unintuitive {{ArrayIndexOutOfBoundsException}} exception is thrown in this
> case:
> {code}
> ...
> Caused by: java.lang.ArrayIndexOutOfBoundsException: 1
> at
> org.apache.spark.sql.catalyst.expressions.GenericInternalRow.genericGet(rows.scala:227)
> at
> org.apache.spark.sql.catalyst.expressions.BaseGenericInternalRow$class.getAs(rows.scala:35)
> at
> org.apache.spark.sql.catalyst.expressions.BaseGenericInternalRow$class.isNullAt(rows.scala:36)
> ...
> {code}
> We should give a better error message here.
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