-
Notifications
You must be signed in to change notification settings - Fork 5.4k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[native] Use row wise encoding for exchanges with more than 1000 streams
- Loading branch information
Showing
58 changed files
with
926 additions
and
165 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
137 changes: 137 additions & 0 deletions
137
...acebook/presto/sql/planner/iterative/rule/DetermineRemotePartitionedExchangeEncoding.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,137 @@ | ||
| /* | ||
| * Licensed 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 com.facebook.presto.sql.planner.iterative.rule; | ||
|
|
||
| import com.facebook.presto.Session; | ||
| import com.facebook.presto.common.type.FixedWidthType; | ||
| import com.facebook.presto.common.type.Type; | ||
| import com.facebook.presto.matching.Captures; | ||
| import com.facebook.presto.matching.Pattern; | ||
| import com.facebook.presto.spi.relation.VariableReferenceExpression; | ||
| import com.facebook.presto.sql.planner.iterative.Rule; | ||
| import com.facebook.presto.sql.planner.plan.ExchangeNode; | ||
| import com.google.common.annotations.VisibleForTesting; | ||
|
|
||
| import static com.facebook.presto.SystemSessionProperties.getMinColumnarEncodingChannelsToPreferRowWiseEncoding; | ||
| import static com.facebook.presto.spi.plan.ExchangeEncoding.ROW_WISE; | ||
| import static com.facebook.presto.sql.planner.plan.ExchangeNode.Scope.REMOTE_STREAMING; | ||
| import static com.facebook.presto.sql.planner.plan.ExchangeNode.Type.REPARTITION; | ||
| import static com.facebook.presto.sql.planner.plan.Patterns.Exchange.scope; | ||
| import static com.facebook.presto.sql.planner.plan.Patterns.Exchange.type; | ||
| import static com.facebook.presto.sql.planner.plan.Patterns.exchange; | ||
|
|
||
| public class DetermineRemotePartitionedExchangeEncoding | ||
| implements Rule<ExchangeNode> | ||
| { | ||
| private static final Pattern<ExchangeNode> PATTERN = exchange() | ||
| .with(scope().equalTo(REMOTE_STREAMING)) | ||
| .with(type().equalTo(REPARTITION)); | ||
|
|
||
| private final boolean nativeExecution; | ||
| private final boolean prestoSparkExecutionEnvironment; | ||
|
|
||
| public DetermineRemotePartitionedExchangeEncoding(boolean nativeExecution, boolean prestoSparkExecutionEnvironment) | ||
| { | ||
| this.nativeExecution = nativeExecution; | ||
| this.prestoSparkExecutionEnvironment = prestoSparkExecutionEnvironment; | ||
| } | ||
|
|
||
| @Override | ||
| public Pattern<ExchangeNode> getPattern() | ||
| { | ||
| return PATTERN; | ||
| } | ||
|
|
||
| @Override | ||
| public boolean isEnabled(Session session) | ||
| { | ||
| return nativeExecution || prestoSparkExecutionEnvironment; | ||
| } | ||
|
|
||
| @Override | ||
| public Result apply(ExchangeNode node, Captures captures, Context context) | ||
| { | ||
| if (prestoSparkExecutionEnvironment) { | ||
| // In Presto on Spark, row-wise encoding is always used for non-special shuffles (i.e., excluding broadcast, single, and arbitrary shuffles). | ||
| // To accurately reflect this in the plan, the exchange encoding is set here. | ||
| // Presto on Spark does not check the ExchangeEncoding specified in the plan. | ||
| return determineForPrestoOnSpark(node); | ||
| } | ||
| if (nativeExecution) { | ||
| return determineForNativeExecution(context.getSession(), node); | ||
| } | ||
| // Presto Java runtime does not support row-wise encoding | ||
| return Result.empty(); | ||
| } | ||
|
|
||
| private Result determineForPrestoOnSpark(ExchangeNode node) | ||
| { | ||
| // keep columnar for special cases | ||
| if (node.getPartitioningScheme().isSingleOrBroadcastOrArbitrary()) { | ||
| return Result.empty(); | ||
| } | ||
| if (node.getPartitioningScheme().getEncoding() == ROW_WISE) { | ||
| // leave untouched if already visited | ||
| return Result.empty(); | ||
| } | ||
| // otherwise switch to row-wise | ||
| return Result.ofPlanNode(node.withRowWiseEncoding()); | ||
| } | ||
|
|
||
| private Result determineForNativeExecution(Session session, ExchangeNode node) | ||
| { | ||
| // keep columnar for special cases | ||
| if (node.getPartitioningScheme().isSingleOrBroadcastOrArbitrary()) { | ||
| return Result.empty(); | ||
| } | ||
| if (node.getPartitioningScheme().getEncoding() == ROW_WISE) { | ||
| // leave untouched if already visited | ||
| return Result.empty(); | ||
| } | ||
| int minChannelsToPreferRowWiseEncoding = getMinColumnarEncodingChannelsToPreferRowWiseEncoding(session); | ||
| if (estimateNumberOfOutputColumnarChannels(node) >= minChannelsToPreferRowWiseEncoding) { | ||
| return Result.ofPlanNode(node.withRowWiseEncoding()); | ||
| } | ||
| return Result.empty(); | ||
| } | ||
|
|
||
| @VisibleForTesting | ||
| static long estimateNumberOfOutputColumnarChannels(ExchangeNode node) | ||
| { | ||
| return node.getOutputVariables().stream() | ||
| .map(VariableReferenceExpression::getType) | ||
| .mapToLong(DetermineRemotePartitionedExchangeEncoding::estimateNumberOfColumnarChannels) | ||
| .sum(); | ||
| } | ||
|
|
||
| @VisibleForTesting | ||
| static long estimateNumberOfColumnarChannels(Type type) | ||
| { | ||
| if (type instanceof FixedWidthType) { | ||
| // nulls and values | ||
| return 2; | ||
| } | ||
| if (!type.getTypeParameters().isEmpty()) { | ||
| // complex type | ||
| // nulls and offsets | ||
| long result = 2; | ||
| for (Type parameter : type.getTypeParameters()) { | ||
| result += estimateNumberOfColumnarChannels(parameter); | ||
| } | ||
| return result; | ||
| } | ||
| // nulls, offsets, values | ||
| return 3; | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.