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author | Tathagata Das <tathagata.das1565@gmail.com> | 2016-04-18 11:09:33 -0700 |
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committer | Shixiong Zhu <shixiong@databricks.com> | 2016-04-18 11:09:33 -0700 |
commit | 775cf17eaaae1a38efe47b282b1d6bbdb99bd759 (patch) | |
tree | da02930091ff58ad899b8d13f06fc9647fce4b9a /sql/catalyst/src | |
parent | 432d1399cb6985893932088875b2f3be981c0b5f (diff) | |
download | spark-775cf17eaaae1a38efe47b282b1d6bbdb99bd759.tar.gz spark-775cf17eaaae1a38efe47b282b1d6bbdb99bd759.tar.bz2 spark-775cf17eaaae1a38efe47b282b1d6bbdb99bd759.zip |
[SPARK-14473][SQL] Define analysis rules to catch operations not supported in streaming
## What changes were proposed in this pull request?
There are many operations that are currently not supported in the streaming execution. For example:
- joining two streams
- unioning a stream and a batch source
- sorting
- window functions (not time windows)
- distinct aggregates
Furthermore, executing a query with a stream source as a batch query should also fail.
This patch add an additional step after analysis in the QueryExecution which will check that all the operations in the analyzed logical plan is supported or not.
## How was this patch tested?
unit tests.
Author: Tathagata Das <tathagata.das1565@gmail.com>
Closes #12246 from tdas/SPARK-14473.
Diffstat (limited to 'sql/catalyst/src')
6 files changed, 594 insertions, 0 deletions
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/OutputMode.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/OutputMode.scala new file mode 100644 index 0000000000..a4d387eae3 --- /dev/null +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/OutputMode.scala @@ -0,0 +1,23 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.spark.sql.catalyst.analysis + +sealed trait OutputMode + +case object Append extends OutputMode +case object Update extends OutputMode diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/UnsupportedOperationChecker.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/UnsupportedOperationChecker.scala new file mode 100644 index 0000000000..aadc1d31bd --- /dev/null +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/UnsupportedOperationChecker.scala @@ -0,0 +1,145 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.spark.sql.catalyst.analysis + +import org.apache.spark.sql.AnalysisException +import org.apache.spark.sql.catalyst.plans._ +import org.apache.spark.sql.catalyst.plans.logical._ + +/** + * Analyzes the presence of unsupported operations in a logical plan. + */ +object UnsupportedOperationChecker { + + def checkForBatch(plan: LogicalPlan): Unit = { + plan.foreachUp { + case p if p.isStreaming => + throwError( + "Queries with streaming sources must be executed with write.startStream()")(p) + + case _ => + } + } + + def checkForStreaming(plan: LogicalPlan, outputMode: OutputMode): Unit = { + + if (!plan.isStreaming) { + throwError( + "Queries without streaming sources cannot be executed with write.startStream()")(plan) + } + + plan.foreachUp { implicit plan => + + // Operations that cannot exists anywhere in a streaming plan + plan match { + + case _: Command => + throwError("Commands like CreateTable*, AlterTable*, Show* are not supported with " + + "streaming DataFrames/Datasets") + + case _: InsertIntoTable => + throwError("InsertIntoTable is not supported with streaming DataFrames/Datasets") + + case Aggregate(_, _, child) if child.isStreaming && outputMode == Append => + throwError( + "Aggregations are not supported on streaming DataFrames/Datasets in " + + "Append output mode. Consider changing output mode to Update.") + + case Join(left, right, joinType, _) => + + joinType match { + + case Inner => + if (left.isStreaming && right.isStreaming) { + throwError("Inner join between two streaming DataFrames/Datasets is not supported") + } + + case FullOuter => + if (left.isStreaming || right.isStreaming) { + throwError("Full outer joins with streaming DataFrames/Datasets are not supported") + } + + + case LeftOuter | LeftSemi | LeftAnti => + if (right.isStreaming) { + throwError("Left outer/semi/anti joins with a streaming DataFrame/Dataset " + + "on the right is not supported") + } + + case RightOuter => + if (left.isStreaming) { + throwError("Right outer join with a streaming DataFrame/Dataset on the left is " + + "not supported") + } + + case NaturalJoin(_) | UsingJoin(_, _) => + // They should not appear in an analyzed plan. + + case _ => + throwError(s"Join type $joinType is not supported with streaming DataFrame/Dataset") + } + + case c: CoGroup if c.children.exists(_.isStreaming) => + throwError("CoGrouping with a streaming DataFrame/Dataset is not supported") + + case u: Union if u.children.map(_.isStreaming).distinct.size == 2 => + throwError("Union between streaming and batch DataFrames/Datasets is not supported") + + case Except(left, right) if right.isStreaming => + throwError("Except with a streaming DataFrame/Dataset on the right is not supported") + + case Intersect(left, right) if left.isStreaming && right.isStreaming => + throwError("Intersect between two streaming DataFrames/Datasets is not supported") + + case GroupingSets(_, _, child, _) if child.isStreaming => + throwError("GroupingSets is not supported on streaming DataFrames/Datasets") + + case GlobalLimit(_, _) | LocalLimit(_, _) if plan.children.forall(_.isStreaming) => + throwError("Limits are not supported on streaming DataFrames/Datasets") + + case Sort(_, _, _) | SortPartitions(_, _) if plan.children.forall(_.isStreaming) => + throwError("Sorting is not supported on streaming DataFrames/Datasets") + + case Sample(_, _, _, _, child) if child.isStreaming => + throwError("Sampling is not supported on streaming DataFrames/Datasets") + + case Window(_, _, _, child) if child.isStreaming => + throwError("Non-time-based windows are not supported on streaming DataFrames/Datasets") + + case ReturnAnswer(child) if child.isStreaming => + throwError("Cannot return immediate result on streaming DataFrames/Dataset. Queries " + + "with streaming DataFrames/Datasets must be executed with write.startStream().") + + case _ => + } + } + } + + private def throwErrorIf( + condition: Boolean, + msg: String)(implicit operator: LogicalPlan): Unit = { + if (condition) { + throwError(msg) + } + } + + private def throwError(msg: String)(implicit operator: LogicalPlan): Nothing = { + throw new AnalysisException( + msg, operator.origin.line, operator.origin.startPosition, Some(operator)) + } +} diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/dsl/package.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/dsl/package.scala index 1e7296664b..958966328b 100644 --- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/dsl/package.scala +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/dsl/package.scala @@ -297,6 +297,24 @@ package object dsl { condition: Option[Expression] = None): LogicalPlan = Join(logicalPlan, otherPlan, joinType, condition) + def cogroup[Key: Encoder, Left: Encoder, Right: Encoder, Result: Encoder]( + otherPlan: LogicalPlan, + func: (Key, Iterator[Left], Iterator[Right]) => TraversableOnce[Result], + leftGroup: Seq[Attribute], + rightGroup: Seq[Attribute], + leftAttr: Seq[Attribute], + rightAttr: Seq[Attribute] + ): LogicalPlan = { + CoGroup.apply[Key, Left, Right, Result]( + func, + leftGroup, + rightGroup, + leftAttr, + rightAttr, + logicalPlan, + otherPlan) + } + def orderBy(sortExprs: SortOrder*): LogicalPlan = Sort(sortExprs, true, logicalPlan) def sortBy(sortExprs: SortOrder*): LogicalPlan = Sort(sortExprs, false, logicalPlan) diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/LogicalPlan.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/LogicalPlan.scala index aceeb8aadc..45ac126a72 100644 --- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/LogicalPlan.scala +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/LogicalPlan.scala @@ -42,6 +42,9 @@ abstract class LogicalPlan extends QueryPlan[LogicalPlan] with Logging { */ def analyzed: Boolean = _analyzed + /** Returns true if this subtree contains any streaming data sources. */ + def isStreaming: Boolean = children.exists(_.isStreaming == true) + /** * Returns a copy of this node where `rule` has been recursively applied first to all of its * children and then itself (post-order). When `rule` does not apply to a given node, it is left diff --git a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/UnsupportedOperationsSuite.scala b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/UnsupportedOperationsSuite.scala new file mode 100644 index 0000000000..ce00a03e76 --- /dev/null +++ b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/UnsupportedOperationsSuite.scala @@ -0,0 +1,384 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.spark.sql.catalyst.analysis + +import org.apache.spark.SparkFunSuite +import org.apache.spark.sql.AnalysisException +import org.apache.spark.sql.catalyst.dsl.expressions._ +import org.apache.spark.sql.catalyst.dsl.plans._ +import org.apache.spark.sql.catalyst.encoders.ExpressionEncoder +import org.apache.spark.sql.catalyst.expressions.{Attribute, AttributeReference} +import org.apache.spark.sql.catalyst.plans._ +import org.apache.spark.sql.catalyst.plans.logical._ +import org.apache.spark.sql.types.IntegerType + +class UnsupportedOperationsSuite extends SparkFunSuite { + + val attribute = AttributeReference("a", IntegerType, nullable = true)() + val batchRelation = LocalRelation(attribute) + val streamRelation = new TestStreamingRelation(attribute) + + /* + ======================================================================================= + BATCH QUERIES + ======================================================================================= + */ + + assertSupportedInBatchPlan("local relation", batchRelation) + + assertNotSupportedInBatchPlan( + "streaming source", + streamRelation, + Seq("with streaming source", "startStream")) + + assertNotSupportedInBatchPlan( + "select on streaming source", + streamRelation.select($"count(*)"), + Seq("with streaming source", "startStream")) + + + /* + ======================================================================================= + STREAMING QUERIES + ======================================================================================= + */ + + // Batch plan in streaming query + testError( + "streaming plan - no streaming source", + Seq("without streaming source", "startStream")) { + UnsupportedOperationChecker.checkForStreaming(batchRelation.select($"count(*)"), Append) + } + + // Commands + assertNotSupportedInStreamingPlan( + "commmands", + DescribeFunction("func", true), + outputMode = Append, + expectedMsgs = "commands" :: Nil) + + // Aggregates: Not supported on streams in Append mode + assertSupportedInStreamingPlan( + "aggregate - batch with update output mode", + batchRelation.groupBy("a")("count(*)"), + outputMode = Update) + + assertSupportedInStreamingPlan( + "aggregate - batch with append output mode", + batchRelation.groupBy("a")("count(*)"), + outputMode = Append) + + assertSupportedInStreamingPlan( + "aggregate - stream with update output mode", + streamRelation.groupBy("a")("count(*)"), + outputMode = Update) + + assertNotSupportedInStreamingPlan( + "aggregate - stream with append output mode", + streamRelation.groupBy("a")("count(*)"), + outputMode = Append, + Seq("aggregation", "append output mode")) + + // Inner joins: Stream-stream not supported + testBinaryOperationInStreamingPlan( + "inner join", + _.join(_, joinType = Inner), + streamStreamSupported = false) + + // Full outer joins: only batch-batch is allowed + testBinaryOperationInStreamingPlan( + "full outer join", + _.join(_, joinType = FullOuter), + streamStreamSupported = false, + batchStreamSupported = false, + streamBatchSupported = false) + + // Left outer joins: *-stream not allowed + testBinaryOperationInStreamingPlan( + "left outer join", + _.join(_, joinType = LeftOuter), + streamStreamSupported = false, + batchStreamSupported = false, + expectedMsg = "left outer/semi/anti joins") + + // Left semi joins: stream-* not allowed + testBinaryOperationInStreamingPlan( + "left semi join", + _.join(_, joinType = LeftSemi), + streamStreamSupported = false, + batchStreamSupported = false, + expectedMsg = "left outer/semi/anti joins") + + // Left anti joins: stream-* not allowed + testBinaryOperationInStreamingPlan( + "left anti join", + _.join(_, joinType = LeftAnti), + streamStreamSupported = false, + batchStreamSupported = false, + expectedMsg = "left outer/semi/anti joins") + + // Right outer joins: stream-* not allowed + testBinaryOperationInStreamingPlan( + "right outer join", + _.join(_, joinType = RightOuter), + streamStreamSupported = false, + streamBatchSupported = false) + + // Cogroup: only batch-batch is allowed + testBinaryOperationInStreamingPlan( + "cogroup", + genCogroup, + streamStreamSupported = false, + batchStreamSupported = false, + streamBatchSupported = false) + + def genCogroup(left: LogicalPlan, right: LogicalPlan): LogicalPlan = { + def func(k: Int, left: Iterator[Int], right: Iterator[Int]): Iterator[Int] = { + Iterator.empty + } + implicit val intEncoder = ExpressionEncoder[Int] + + left.cogroup[Int, Int, Int, Int]( + right, + func, + AppendColumns[Int, Int]((x: Int) => x, left).newColumns, + AppendColumns[Int, Int]((x: Int) => x, right).newColumns, + left.output, + right.output) + } + + // Union: Mixing between stream and batch not supported + testBinaryOperationInStreamingPlan( + "union", + _.union(_), + streamBatchSupported = false, + batchStreamSupported = false) + + // Except: *-stream not supported + testBinaryOperationInStreamingPlan( + "except", + _.except(_), + streamStreamSupported = false, + batchStreamSupported = false) + + // Intersect: stream-stream not supported + testBinaryOperationInStreamingPlan( + "intersect", + _.intersect(_), + streamStreamSupported = false) + + + // Unary operations + testUnaryOperatorInStreamingPlan("sort", Sort(Nil, true, _)) + testUnaryOperatorInStreamingPlan("sort partitions", SortPartitions(Nil, _), expectedMsg = "sort") + testUnaryOperatorInStreamingPlan( + "sample", Sample(0.1, 1, true, 1L, _)(), expectedMsg = "sampling") + testUnaryOperatorInStreamingPlan( + "window", Window(Nil, Nil, Nil, _), expectedMsg = "non-time-based windows") + + + /* + ======================================================================================= + TESTING FUNCTIONS + ======================================================================================= + */ + + /** + * Test that an unary operator correctly fails support check when it has a streaming child plan, + * but not when it has batch child plan. There can be batch sub-plans inside a streaming plan, + * so it is valid for the operator to have a batch child plan. + * + * This test wraps the logical plan in a fake operator that makes the whole plan look like + * a streaming plan even if the child plan is a batch plan. This is to test that the operator + * supports having a batch child plan, forming a batch subplan inside a streaming plan. + */ + def testUnaryOperatorInStreamingPlan( + operationName: String, + logicalPlanGenerator: LogicalPlan => LogicalPlan, + outputMode: OutputMode = Append, + expectedMsg: String = ""): Unit = { + + val expectedMsgs = if (expectedMsg.isEmpty) Seq(operationName) else Seq(expectedMsg) + + assertNotSupportedInStreamingPlan( + s"$operationName with stream relation", + wrapInStreaming(logicalPlanGenerator(streamRelation)), + outputMode, + expectedMsgs) + + assertSupportedInStreamingPlan( + s"$operationName with batch relation", + wrapInStreaming(logicalPlanGenerator(batchRelation)), + outputMode) + } + + + /** + * Test that a binary operator correctly fails support check when it has combinations of + * streaming and batch child plans. There can be batch sub-plans inside a streaming plan, + * so it is valid for the operator to have a batch child plan. + */ + def testBinaryOperationInStreamingPlan( + operationName: String, + planGenerator: (LogicalPlan, LogicalPlan) => LogicalPlan, + outputMode: OutputMode = Append, + streamStreamSupported: Boolean = true, + streamBatchSupported: Boolean = true, + batchStreamSupported: Boolean = true, + expectedMsg: String = ""): Unit = { + + val expectedMsgs = if (expectedMsg.isEmpty) Seq(operationName) else Seq(expectedMsg) + + if (streamStreamSupported) { + assertSupportedInStreamingPlan( + s"$operationName with stream-stream relations", + planGenerator(streamRelation, streamRelation), + outputMode) + } else { + assertNotSupportedInStreamingPlan( + s"$operationName with stream-stream relations", + planGenerator(streamRelation, streamRelation), + outputMode, + expectedMsgs) + } + + if (streamBatchSupported) { + assertSupportedInStreamingPlan( + s"$operationName with stream-batch relations", + planGenerator(streamRelation, batchRelation), + outputMode) + } else { + assertNotSupportedInStreamingPlan( + s"$operationName with stream-batch relations", + planGenerator(streamRelation, batchRelation), + outputMode, + expectedMsgs) + } + + if (batchStreamSupported) { + assertSupportedInStreamingPlan( + s"$operationName with batch-stream relations", + planGenerator(batchRelation, streamRelation), + outputMode) + } else { + assertNotSupportedInStreamingPlan( + s"$operationName with batch-stream relations", + planGenerator(batchRelation, streamRelation), + outputMode, + expectedMsgs) + } + + assertSupportedInStreamingPlan( + s"$operationName with batch-batch relations", + planGenerator(batchRelation, batchRelation), + outputMode) + } + + /** + * Assert that the logical plan is supported as subplan insider a streaming plan. + * + * To test this correctly, the given logical plan is wrapped in a fake operator that makes the + * whole plan look like a streaming plan. Otherwise, a batch plan may throw not supported + * exception simply for not being a streaming plan, even though that plan could exists as batch + * subplan inside some streaming plan. + */ + def assertSupportedInStreamingPlan( + name: String, + plan: LogicalPlan, + outputMode: OutputMode): Unit = { + test(s"streaming plan - $name: supported") { + UnsupportedOperationChecker.checkForStreaming(wrapInStreaming(plan), outputMode) + } + } + + /** + * Assert that the logical plan is not supported inside a streaming plan. + * + * To test this correctly, the given logical plan is wrapped in a fake operator that makes the + * whole plan look like a streaming plan. Otherwise, a batch plan may throw not supported + * exception simply for not being a streaming plan, even though that plan could exists as batch + * subplan inside some streaming plan. + */ + def assertNotSupportedInStreamingPlan( + name: String, + plan: LogicalPlan, + outputMode: OutputMode, + expectedMsgs: Seq[String]): Unit = { + testError( + s"streaming plan - $name: not supported", + expectedMsgs :+ "streaming" :+ "DataFrame" :+ "Dataset" :+ "not supported") { + UnsupportedOperationChecker.checkForStreaming(wrapInStreaming(plan), outputMode) + } + } + + /** Assert that the logical plan is supported as a batch plan */ + def assertSupportedInBatchPlan(name: String, plan: LogicalPlan): Unit = { + test(s"batch plan - $name: supported") { + UnsupportedOperationChecker.checkForBatch(plan) + } + } + + /** Assert that the logical plan is not supported as a batch plan */ + def assertNotSupportedInBatchPlan( + name: String, + plan: LogicalPlan, + expectedMsgs: Seq[String]): Unit = { + testError(s"batch plan - $name: not supported", expectedMsgs) { + UnsupportedOperationChecker.checkForBatch(plan) + } + } + + /** + * Test whether the body of code will fail. If it does fail, then check if it has expected + * messages. + */ + def testError(testName: String, expectedMsgs: Seq[String])(testBody: => Unit): Unit = { + + test(testName) { + val e = intercept[AnalysisException] { + testBody + } + + if (!expectedMsgs.map(_.toLowerCase).forall(e.getMessage.toLowerCase.contains)) { + fail( + s"""Exception message should contain the following substrings: + | + | ${expectedMsgs.mkString("\n ")} + | + |Actual exception message: + | + | ${e.getMessage} + """.stripMargin) + } + } + } + + def wrapInStreaming(plan: LogicalPlan): LogicalPlan = { + new StreamingPlanWrapper(plan) + } + + case class StreamingPlanWrapper(child: LogicalPlan) extends UnaryNode { + override def output: Seq[Attribute] = child.output + override def isStreaming: Boolean = true + } + + case class TestStreamingRelation(output: Seq[Attribute]) extends LeafNode { + def this(attribute: Attribute) = this(Seq(attribute)) + override def isStreaming: Boolean = true + } +} diff --git a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/plans/LogicalPlanSuite.scala b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/plans/LogicalPlanSuite.scala index faef9ed274..cc86f1f6e2 100644 --- a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/plans/LogicalPlanSuite.scala +++ b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/plans/LogicalPlanSuite.scala @@ -18,7 +18,9 @@ package org.apache.spark.sql.catalyst.plans import org.apache.spark.SparkFunSuite +import org.apache.spark.sql.catalyst.expressions.{Attribute, AttributeReference} import org.apache.spark.sql.catalyst.plans.logical._ +import org.apache.spark.sql.types.IntegerType /** * This suite is used to test [[LogicalPlan]]'s `resolveOperators` and make sure it can correctly @@ -68,4 +70,23 @@ class LogicalPlanSuite extends SparkFunSuite { assert(invocationCount === 1) } + + test("isStreaming") { + val relation = LocalRelation(AttributeReference("a", IntegerType, nullable = true)()) + val incrementalRelation = new LocalRelation( + Seq(AttributeReference("a", IntegerType, nullable = true)())) { + override def isStreaming(): Boolean = true + } + + case class TestBinaryRelation(left: LogicalPlan, right: LogicalPlan) extends BinaryNode { + override def output: Seq[Attribute] = left.output ++ right.output + } + + require(relation.isStreaming === false) + require(incrementalRelation.isStreaming === true) + assert(TestBinaryRelation(relation, relation).isStreaming === false) + assert(TestBinaryRelation(incrementalRelation, relation).isStreaming === true) + assert(TestBinaryRelation(relation, incrementalRelation).isStreaming === true) + assert(TestBinaryRelation(incrementalRelation, incrementalRelation).isStreaming) + } } |