[
https://issues.apache.org/jira/browse/SPARK-22826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Aleksander Eskilson updated SPARK-22826:
----------------------------------------
Description:
The {{findWiderTypeForTwo}} codepath in Catalyst {{TypeCoercion}} fails when
applied to to {{StructType}} having the following fields:
{noformat}
StructType(StructField("a", ArrayType(StringType, containsNull=true)) ::
Nil),
StructType(StructField("a", ArrayType(StringType, containsNull=false)) ::
Nil)
{noformat}
When in {{findTightestCommonType}}, the function attempts to recursively find
the tightest common type of two arrays. These two arrays are not equal types
(since one would admit null elements and the other would not), but
{{findTightestCommonType}} has no match case for {{ArrayType}} (or
{{MapType}}), so the
[get|https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/TypeCoercion.scala#L108]
operation on the dataType of the {{StructField}} throws a
{{NoSuchElementException}}.
was:
The {{findWiderTypeForTwo}} codepath in Catalyst {{TypeCoercion}} fails when
applied to to {{StructType}} having the following fields:
{noformat}
StructType(StructField("a", ArrayType(StringType, containsNull=true)) ::
Nil),
StructType(StructField("a", ArrayType(StringType, containsNull=false)) ::
Nil)
{noformat}
When in {{findTightestCommonType}}, the function attempts to recursively find
the tightest common type of two arrays. These two arrays are not equal types
(since one would admit null elements and the other would not), but
{{findTightestCommonType}} has no match case for {{ArrayType}} (or
{{MapType}}), so the
get[operation|https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/TypeCoercion.scala#L108]
operation on the dataType of the {{StructField}} throws a
{{NoSuchElementException}}.
> [SQL] findWiderTypeForTwo Fails over StructField of Array
> ---------------------------------------------------------
>
> Key: SPARK-22826
> URL: https://issues.apache.org/jira/browse/SPARK-22826
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Aleksander Eskilson
>
> The {{findWiderTypeForTwo}} codepath in Catalyst {{TypeCoercion}} fails when
> applied to to {{StructType}} having the following fields:
> {noformat}
> StructType(StructField("a", ArrayType(StringType, containsNull=true))
> :: Nil),
> StructType(StructField("a", ArrayType(StringType, containsNull=false))
> :: Nil)
> {noformat}
> When in {{findTightestCommonType}}, the function attempts to recursively find
> the tightest common type of two arrays. These two arrays are not equal types
> (since one would admit null elements and the other would not), but
> {{findTightestCommonType}} has no match case for {{ArrayType}} (or
> {{MapType}}), so the
> [get|https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/TypeCoercion.scala#L108]
> operation on the dataType of the {{StructField}} throws a
> {{NoSuchElementException}}.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
