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author | Michael Armbrust <michael@databricks.com> | 2014-11-14 12:00:08 -0800 |
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committer | Reynold Xin <rxin@databricks.com> | 2014-11-14 12:01:07 -0800 |
commit | 39257ca1bc920352e89ccb519a7e8b5d90710b68 (patch) | |
tree | 81b8b7f2d7bd21b15bd0d3eb08638abd46fb9fd6 | |
parent | f1e7d1c2c02ded1f66ff2a3cff9a6e46bb10c5d3 (diff) | |
download | spark-39257ca1bc920352e89ccb519a7e8b5d90710b68.tar.gz spark-39257ca1bc920352e89ccb519a7e8b5d90710b68.tar.bz2 spark-39257ca1bc920352e89ccb519a7e8b5d90710b68.zip |
[SPARK-4394][SQL] Data Sources API Improvements
This PR adds two features to the data sources API:
- Support for pushing down `IN` filters
- The ability for relations to optionally provide information about their `sizeInBytes`.
Author: Michael Armbrust <michael@databricks.com>
Closes #3260 from marmbrus/sourcesImprovements and squashes the following commits:
9a5e171 [Michael Armbrust] Use method instead of configuration directly
99c0e6b [Michael Armbrust] Add support for sizeInBytes.
416f167 [Michael Armbrust] Support for IN in data sources API.
2a04ab3 [Michael Armbrust] Simplify implementation of InSet.
(cherry picked from commit 77e845ca7726ffee2d6f8e33ea56ec005dde3874)
Signed-off-by: Reynold Xin <rxin@databricks.com>
9 files changed, 32 insertions, 15 deletions
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/predicates.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/predicates.scala index 1e22b2d03c..94b6fb084d 100644 --- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/predicates.scala +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/predicates.scala @@ -99,10 +99,10 @@ case class In(value: Expression, list: Seq[Expression]) extends Predicate { * Optimized version of In clause, when all filter values of In clause are * static. */ -case class InSet(value: Expression, hset: HashSet[Any], child: Seq[Expression]) +case class InSet(value: Expression, hset: Set[Any]) extends Predicate { - def children = child + def children = value :: Nil def nullable = true // TODO: Figure out correct nullability semantics of IN. override def toString = s"$value INSET ${hset.mkString("(", ",", ")")}" diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala index a4aa322fc5..f164a6c68a 100644 --- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala @@ -289,7 +289,7 @@ object OptimizeIn extends Rule[LogicalPlan] { case q: LogicalPlan => q transformExpressionsDown { case In(v, list) if !list.exists(!_.isInstanceOf[Literal]) => val hSet = list.map(e => e.eval(null)) - InSet(v, HashSet() ++ hSet, v +: list) + InSet(v, HashSet() ++ hSet) } } } diff --git a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/ExpressionEvaluationSuite.scala b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/ExpressionEvaluationSuite.scala index 918996f11d..2f57be94a8 100644 --- a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/ExpressionEvaluationSuite.scala +++ b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/ExpressionEvaluationSuite.scala @@ -158,13 +158,13 @@ class ExpressionEvaluationSuite extends FunSuite { val nl = Literal(null) val s = Seq(one, two) val nullS = Seq(one, two, null) - checkEvaluation(InSet(one, hS, one +: s), true) - checkEvaluation(InSet(two, hS, two +: s), true) - checkEvaluation(InSet(two, nS, two +: nullS), true) - checkEvaluation(InSet(nl, nS, nl +: nullS), true) - checkEvaluation(InSet(three, hS, three +: s), false) - checkEvaluation(InSet(three, nS, three +: nullS), false) - checkEvaluation(InSet(one, hS, one +: s) && InSet(two, hS, two +: s), true) + checkEvaluation(InSet(one, hS), true) + checkEvaluation(InSet(two, hS), true) + checkEvaluation(InSet(two, nS), true) + checkEvaluation(InSet(nl, nS), true) + checkEvaluation(InSet(three, hS), false) + checkEvaluation(InSet(three, nS), false) + checkEvaluation(InSet(one, hS) && InSet(two, hS), true) } test("MaxOf") { diff --git a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/OptimizeInSuite.scala b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/OptimizeInSuite.scala index 97a78ec971..017b180c57 100644 --- a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/OptimizeInSuite.scala +++ b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/OptimizeInSuite.scala @@ -52,8 +52,7 @@ class OptimizeInSuite extends PlanTest { val optimized = Optimize(originalQuery.analyze) val correctAnswer = testRelation - .where(InSet(UnresolvedAttribute("a"), HashSet[Any]()+1+2, - UnresolvedAttribute("a") +: Seq(Literal(1),Literal(2)))) + .where(InSet(UnresolvedAttribute("a"), HashSet[Any]()+1+2)) .analyze comparePlans(optimized, correctAnswer) diff --git a/sql/core/src/main/scala/org/apache/spark/sql/sources/DataSourceStrategy.scala b/sql/core/src/main/scala/org/apache/spark/sql/sources/DataSourceStrategy.scala index 9b8c6a56b9..954e86822d 100644 --- a/sql/core/src/main/scala/org/apache/spark/sql/sources/DataSourceStrategy.scala +++ b/sql/core/src/main/scala/org/apache/spark/sql/sources/DataSourceStrategy.scala @@ -108,5 +108,7 @@ private[sql] object DataSourceStrategy extends Strategy { case expressions.LessThanOrEqual(a: Attribute, Literal(v, _)) => LessThanOrEqual(a.name, v) case expressions.LessThanOrEqual(Literal(v, _), a: Attribute) => GreaterThanOrEqual(a.name, v) + + case expressions.InSet(a: Attribute, set) => In(a.name, set.toArray) } } diff --git a/sql/core/src/main/scala/org/apache/spark/sql/sources/LogicalRelation.scala b/sql/core/src/main/scala/org/apache/spark/sql/sources/LogicalRelation.scala index 82a2cf8402..4d87f6817d 100644 --- a/sql/core/src/main/scala/org/apache/spark/sql/sources/LogicalRelation.scala +++ b/sql/core/src/main/scala/org/apache/spark/sql/sources/LogicalRelation.scala @@ -41,8 +41,7 @@ private[sql] case class LogicalRelation(relation: BaseRelation) } @transient override lazy val statistics = Statistics( - // TODO: Allow datasources to provide statistics as well. - sizeInBytes = BigInt(relation.sqlContext.defaultSizeInBytes) + sizeInBytes = BigInt(relation.sizeInBytes) ) /** Used to lookup original attribute capitalization */ diff --git a/sql/core/src/main/scala/org/apache/spark/sql/sources/filters.scala b/sql/core/src/main/scala/org/apache/spark/sql/sources/filters.scala index e72a2aeb8f..4a9fefc12b 100644 --- a/sql/core/src/main/scala/org/apache/spark/sql/sources/filters.scala +++ b/sql/core/src/main/scala/org/apache/spark/sql/sources/filters.scala @@ -24,3 +24,4 @@ case class GreaterThan(attribute: String, value: Any) extends Filter case class GreaterThanOrEqual(attribute: String, value: Any) extends Filter case class LessThan(attribute: String, value: Any) extends Filter case class LessThanOrEqual(attribute: String, value: Any) extends Filter +case class In(attribute: String, values: Array[Any]) extends Filter diff --git a/sql/core/src/main/scala/org/apache/spark/sql/sources/interfaces.scala b/sql/core/src/main/scala/org/apache/spark/sql/sources/interfaces.scala index ac3bf9d8e1..861638b1e9 100644 --- a/sql/core/src/main/scala/org/apache/spark/sql/sources/interfaces.scala +++ b/sql/core/src/main/scala/org/apache/spark/sql/sources/interfaces.scala @@ -18,7 +18,7 @@ package org.apache.spark.sql.sources import org.apache.spark.annotation.DeveloperApi import org.apache.spark.rdd.RDD -import org.apache.spark.sql.{Row, SQLContext, StructType} +import org.apache.spark.sql.{SQLConf, Row, SQLContext, StructType} import org.apache.spark.sql.catalyst.expressions.{Expression, Attribute} /** @@ -53,6 +53,15 @@ trait RelationProvider { abstract class BaseRelation { def sqlContext: SQLContext def schema: StructType + + /** + * Returns an estimated size of this relation in bytes. This information is used by the planner + * to decided when it is safe to broadcast a relation and can be overridden by sources that + * know the size ahead of time. By default, the system will assume that tables are too + * large to broadcast. This method will be called multiple times during query planning + * and thus should not perform expensive operations for each invocation. + */ + def sizeInBytes = sqlContext.defaultSizeInBytes } /** diff --git a/sql/core/src/test/scala/org/apache/spark/sql/sources/FilteredScanSuite.scala b/sql/core/src/test/scala/org/apache/spark/sql/sources/FilteredScanSuite.scala index 8b2f1591d5..939b3c0c66 100644 --- a/sql/core/src/test/scala/org/apache/spark/sql/sources/FilteredScanSuite.scala +++ b/sql/core/src/test/scala/org/apache/spark/sql/sources/FilteredScanSuite.scala @@ -51,6 +51,7 @@ case class SimpleFilteredScan(from: Int, to: Int)(@transient val sqlContext: SQL case LessThanOrEqual("a", v: Int) => (a: Int) => a <= v case GreaterThan("a", v: Int) => (a: Int) => a > v case GreaterThanOrEqual("a", v: Int) => (a: Int) => a >= v + case In("a", values) => (a: Int) => values.map(_.asInstanceOf[Int]).toSet.contains(a) } def eval(a: Int) = !filterFunctions.map(_(a)).contains(false) @@ -122,6 +123,10 @@ class FilteredScanSuite extends DataSourceTest { Seq(1).map(i => Row(i, i * 2)).toSeq) sqlTest( + "SELECT * FROM oneToTenFiltered WHERE a IN (1,3,5)", + Seq(1,3,5).map(i => Row(i, i * 2)).toSeq) + + sqlTest( "SELECT * FROM oneToTenFiltered WHERE A = 1", Seq(1).map(i => Row(i, i * 2)).toSeq) @@ -150,6 +155,8 @@ class FilteredScanSuite extends DataSourceTest { testPushDown("SELECT * FROM oneToTenFiltered WHERE a > 1 AND a < 10", 8) + testPushDown("SELECT * FROM oneToTenFiltered WHERE a IN (1,3,5)", 3) + testPushDown("SELECT * FROM oneToTenFiltered WHERE a = 20", 0) testPushDown("SELECT * FROM oneToTenFiltered WHERE b = 1", 10) |