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[SPARK-13996][SQL] Add more not null attributes for Filter codegen #11810

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viirya wants to merge 6 commits into from
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[SPARK-13996][SQL] Add more not null attributes for Filter codegen #11810

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8e59a74
Add more not null attributes for Filter codegen.
viirya Mar 18, 2016
376c6f0
Fix bug.
viirya Mar 18, 2016
3d73249
Fix it.
viirya Mar 18, 2016
662c4e3
Use exprId to deal with different qualifiers between child.outout and…
viirya Mar 19, 2016
65ea0dd
Merge remote-tracking branch 'upstream/master' into add-more-not-null…
viirya Apr 2, 2016
0c7afe7
Merge remote-tracking branch 'upstream/master' into add-more-not-null…
viirya Apr 2, 2016
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Add more not null attributes for Filter codegen.
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@viirya
viirya committed Mar 18, 2016
commit 8e59a7450db57ca210010fa3df1cb41a84311fed
5 changes: 3 additions & 2 deletions sql/core/src/main/scala/org/apache/spark/sql/execution/basicOperators.scala
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Expand Up @@ -79,12 +79,13 @@ case class Filter(condition: Expression, child: SparkPlan)

// Split out all the IsNotNulls from condition.
private val (notNullPreds, otherPreds) = splitConjunctivePredicates(condition).partition {
case IsNotNull(a) if child.output.contains(a) => true
case IsNotNull(a) if a.references.subsetOf(child.outputSet) => true
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@davies davies Mar 23, 2016

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This is not correct, for example, IsNotNull(IsNull(a)) does not means a can not be null.

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@viirya viirya Mar 24, 2016

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ah, you are right. With the NullIntolerant trait introduced in #11809, we can solve this easily. Wait for that PR to be ready then we can re-visit this. Thanks!

case _ => false
}

// The columns that will filtered out by `IsNotNull` could be considered as not nullable.
private val notNullAttributes = notNullPreds.flatMap(_.references)
private val notNullAttributes =
notNullPreds.flatMap(_.references) ++ child.output.filterNot(_.nullable)

override def output: Seq[Attribute] = {
child.output.map { a =>
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