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[GitHub] [spark] viirya opened a new pull request #35749: [SPARK-38285][SQL] Avoid generator runing for invalid extractor
viirya opened a new pull request #35749:
URL: https://github.com/apache/spark/pull/35749
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### What changes were proposed in this pull request?
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This fixes a bug in generator nested column pruning. The bug happens when the extractor pattern is like `GetArrayStructFields(GetStructField(...), ...)` on the generator output. Once the input to the generator is an array, after replacing with the extractor based on pruning logic, it becomes an extractor of `GetArrayStructFields(GetArrayStructFields(...), ...)` which is not valid.
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To fix a bug in generator nested column pruning.
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Yes, fixing a user-facing bug.
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Added unit test.
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[GitHub] [spark] dongjoon-hyun commented on a change in pull request #35749: [SPARK-38285][SQL] Avoid generator runing for invalid extractor
Posted by GitBox <gi...@apache.org>.
dongjoon-hyun commented on a change in pull request #35749:
URL: https://github.com/apache/spark/pull/35749#discussion_r820469658
##########
File path: sql/core/src/test/scala/org/apache/spark/sql/DataFrameSuite.scala
##########
@@ -3087,6 +3087,26 @@ class DataFrameSuite extends QueryTest
assert(res.collect.length == 2)
}
+
+ test("SPARK-38285: Fix ClassCastException: GenericArrayData cannot be cast to InternalRow") {
+ withTempView("v1") {
+ val sqlText =
+ """
+ |create or replace temp view v1 as
Review comment:
nit. Shall we capitalize the SQL keywords? :)
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[GitHub] [spark] dongjoon-hyun commented on a change in pull request #35749: [SPARK-38285][SQL] Avoid generator runing for invalid extractor
Posted by GitBox <gi...@apache.org>.
dongjoon-hyun commented on a change in pull request #35749:
URL: https://github.com/apache/spark/pull/35749#discussion_r820470883
##########
File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasing.scala
##########
@@ -372,6 +372,13 @@ object GeneratorNestedColumnAliasing {
e.withNewChildren(Seq(extractor))
}
+ val invalidExtractor = rewrittenG.generator.children.head.collect {
Review comment:
Could you add some comments for this logic?
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[GitHub] [spark] viirya commented on pull request #35749: [SPARK-38285][SQL] Avoid generator pruning for invalid extractor
Posted by GitBox <gi...@apache.org>.
viirya commented on pull request #35749:
URL: https://github.com/apache/spark/pull/35749#issuecomment-1061082592
Merging to master/3.2.
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[GitHub] [spark] dongjoon-hyun commented on a change in pull request #35749: [SPARK-38285][SQL] Avoid generator runing for invalid extractor
Posted by GitBox <gi...@apache.org>.
dongjoon-hyun commented on a change in pull request #35749:
URL: https://github.com/apache/spark/pull/35749#discussion_r820469853
##########
File path: sql/core/src/test/scala/org/apache/spark/sql/DataFrameSuite.scala
##########
@@ -3087,6 +3087,26 @@ class DataFrameSuite extends QueryTest
assert(res.collect.length == 2)
}
+
+ test("SPARK-38285: Fix ClassCastException: GenericArrayData cannot be cast to InternalRow") {
+ withTempView("v1") {
+ val sqlText =
+ """
+ |create or replace temp view v1 as
+ |select * from values
+ |(array(
+ | named_struct('s', 'string1', 'b', array(named_struct('e', 'string2'))),
+ | named_struct('s', 'string4', 'b', array(named_struct('e', 'string5')))
+ | )
+ |)
+ |v1(o);
+ |""".stripMargin
+ sql(sqlText)
+
+ val df = sql("select eo.b.e from (select explode(o) as eo from v1)")
Review comment:
ditto.
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[GitHub] [spark] viirya commented on pull request #35749: [SPARK-38285][SQL] Avoid generator pruning for invalid extractor
Posted by GitBox <gi...@apache.org>.
viirya commented on pull request #35749:
URL: https://github.com/apache/spark/pull/35749#issuecomment-1061033305
Thank you @dongjoon-hyun !
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[GitHub] [spark] dongjoon-hyun commented on pull request #35749: [SPARK-38285][SQL] Avoid generator pruning for invalid extractor
Posted by GitBox <gi...@apache.org>.
dongjoon-hyun commented on pull request #35749:
URL: https://github.com/apache/spark/pull/35749#issuecomment-1061030267
+1, LGTM. Thank you, @viirya !
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[GitHub] [spark] viirya closed pull request #35749: [SPARK-38285][SQL] Avoid generator pruning for invalid extractor
Posted by GitBox <gi...@apache.org>.
viirya closed pull request #35749:
URL: https://github.com/apache/spark/pull/35749
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[GitHub] [spark] viirya commented on a change in pull request #35749: [SPARK-38285][SQL] Avoid generator runing for invalid extractor
Posted by GitBox <gi...@apache.org>.
viirya commented on a change in pull request #35749:
URL: https://github.com/apache/spark/pull/35749#discussion_r820485068
##########
File path: sql/core/src/test/scala/org/apache/spark/sql/DataFrameSuite.scala
##########
@@ -3087,6 +3087,26 @@ class DataFrameSuite extends QueryTest
assert(res.collect.length == 2)
}
+
+ test("SPARK-38285: Fix ClassCastException: GenericArrayData cannot be cast to InternalRow") {
+ withTempView("v1") {
+ val sqlText =
+ """
+ |create or replace temp view v1 as
Review comment:
yea
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[GitHub] [spark] viirya commented on a change in pull request #35749: [SPARK-38285][SQL] Avoid generator runing for invalid extractor
Posted by GitBox <gi...@apache.org>.
viirya commented on a change in pull request #35749:
URL: https://github.com/apache/spark/pull/35749#discussion_r820485266
##########
File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasing.scala
##########
@@ -372,6 +372,13 @@ object GeneratorNestedColumnAliasing {
e.withNewChildren(Seq(extractor))
}
+ val invalidExtractor = rewrittenG.generator.children.head.collect {
Review comment:
Sure. I will add some.
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