mridulm commented on code in PR #2373: URL: https://github.com/apache/celeborn/pull/2373#discussion_r1562071909
########## assets/spark-patch/Celeborn-Optimize-Skew-Partitions-spark3_3.patch: ########## @@ -0,0 +1,79 @@ +# 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. + +diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala +index af03ad9a4cb..3b5c7ce4fce 100644 +--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ++++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala +@@ -3784,6 +3784,12 @@ object SQLConf { + .booleanConf + .createWithDefault(false) + ++ val CELEBORN_CLIENT_ADAPTIVE_OPTIMIZE_SKEWED_PARTITION_READ = ++ buildConf("spark.celeborn.client.adaptive.optimizeSkewedPartitionRead.enabled") ++ .version("3.3.0") ++ .booleanConf ++ .createWithDefault(false) ++ + /** + * Holds information about keys that have been deprecated. + * +@@ -4549,6 +4555,9 @@ class SQLConf extends Serializable with Logging { + def histogramNumericPropagateInputType: Boolean = + getConf(SQLConf.HISTOGRAM_NUMERIC_PROPAGATE_INPUT_TYPE) + ++ def celebornClientAdaptiveOptimizeSkewedPartitionReadEnabled: Boolean = ++ getConf(SQLConf.CELEBORN_CLIENT_ADAPTIVE_OPTIMIZE_SKEWED_PARTITION_READ) ++ + /** ********************** SQLConf functionality methods ************ */ + + /** Set Spark SQL configuration properties. */ +diff --git a/sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/ShufflePartitionsUtil.scala b/sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/ShufflePartitionsUtil.scala +index af689db3379..38e54b3ed0a 100644 +--- a/sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/ShufflePartitionsUtil.scala ++++ b/sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/ShufflePartitionsUtil.scala +@@ -22,6 +22,8 @@ import scala.collection.mutable.ArrayBuffer + import org.apache.spark.{MapOutputStatistics, MapOutputTrackerMaster, SparkEnv} + import org.apache.spark.internal.Logging + import org.apache.spark.sql.execution.{CoalescedPartitionSpec, PartialReducerPartitionSpec, ShufflePartitionSpec} ++import org.apache.spark.sql.internal.SQLConf ++import org.apache.spark.util.Utils + + object ShufflePartitionsUtil extends Logging { + final val SMALL_PARTITION_FACTOR = 0.2 +@@ -387,6 +389,10 @@ object ShufflePartitionsUtil extends Logging { + val mapStartIndices = splitSizeListByTargetSize( + mapPartitionSizes, targetSize, smallPartitionFactor) + if (mapStartIndices.length > 1) { ++ // If Celeborn is enabled, split skew partitions without shuffle mapper-range reading ++ val isCelebornClientAdaptiveOptimizeSkewedPartitionReadEnabled = Utils.isCelebornEnabled(SparkEnv.get.conf) && ++ SQLConf.get.celebornClientAdaptiveOptimizeSkewedPartitionReadEnabled ++ + Some(mapStartIndices.indices.map { i => + val startMapIndex = mapStartIndices(i) + val endMapIndex = if (i == mapStartIndices.length - 1) { +@@ -400,7 +406,11 @@ object ShufflePartitionsUtil extends Logging { + dataSize += mapPartitionSizes(mapIndex) + mapIndex += 1 + } +- PartialReducerPartitionSpec(reducerId, startMapIndex, endMapIndex, dataSize) ++ if (isCelebornClientAdaptiveOptimizeSkewedPartitionReadEnabled) { ++ PartialReducerPartitionSpec(reducerId, mapStartIndices.length, i, -1) Review Comment: When `isCelebornClientAdaptiveOptimizeSkewedPartitionReadEnabled`, avoid the prefix computation here entirely ? That is, avoid ``` var dataSize = 0L var mapIndex = startMapIndex while (mapIndex < endMapIndex) { dataSize += mapPartitionSizes(mapIndex) mapIndex += 1 } ``` ? ########## assets/spark-patch/Celeborn-Optimize-Skew-Partitions-spark3_3.patch: ########## @@ -0,0 +1,79 @@ +# 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. + +diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala +index af03ad9a4cb..3b5c7ce4fce 100644 +--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ++++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala +@@ -3784,6 +3784,12 @@ object SQLConf { + .booleanConf + .createWithDefault(false) + ++ val CELEBORN_CLIENT_ADAPTIVE_OPTIMIZE_SKEWED_PARTITION_READ = ++ buildConf("spark.celeborn.client.adaptive.optimizeSkewedPartitionRead.enabled") ++ .version("3.3.0") ++ .booleanConf ++ .createWithDefault(false) ++ + /** + * Holds information about keys that have been deprecated. + * +@@ -4549,6 +4555,9 @@ class SQLConf extends Serializable with Logging { + def histogramNumericPropagateInputType: Boolean = + getConf(SQLConf.HISTOGRAM_NUMERIC_PROPAGATE_INPUT_TYPE) + ++ def celebornClientAdaptiveOptimizeSkewedPartitionReadEnabled: Boolean = ++ getConf(SQLConf.CELEBORN_CLIENT_ADAPTIVE_OPTIMIZE_SKEWED_PARTITION_READ) ++ + /** ********************** SQLConf functionality methods ************ */ + + /** Set Spark SQL configuration properties. */ +diff --git a/sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/ShufflePartitionsUtil.scala b/sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/ShufflePartitionsUtil.scala +index af689db3379..38e54b3ed0a 100644 +--- a/sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/ShufflePartitionsUtil.scala ++++ b/sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/ShufflePartitionsUtil.scala +@@ -22,6 +22,8 @@ import scala.collection.mutable.ArrayBuffer + import org.apache.spark.{MapOutputStatistics, MapOutputTrackerMaster, SparkEnv} + import org.apache.spark.internal.Logging + import org.apache.spark.sql.execution.{CoalescedPartitionSpec, PartialReducerPartitionSpec, ShufflePartitionSpec} ++import org.apache.spark.sql.internal.SQLConf ++import org.apache.spark.util.Utils + + object ShufflePartitionsUtil extends Logging { + final val SMALL_PARTITION_FACTOR = 0.2 +@@ -387,6 +389,10 @@ object ShufflePartitionsUtil extends Logging { + val mapStartIndices = splitSizeListByTargetSize( + mapPartitionSizes, targetSize, smallPartitionFactor) + if (mapStartIndices.length > 1) { ++ // If Celeborn is enabled, split skew partitions without shuffle mapper-range reading ++ val isCelebornClientAdaptiveOptimizeSkewedPartitionReadEnabled = Utils.isCelebornEnabled(SparkEnv.get.conf) && ++ SQLConf.get.celebornClientAdaptiveOptimizeSkewedPartitionReadEnabled ++ + Some(mapStartIndices.indices.map { i => + val startMapIndex = mapStartIndices(i) + val endMapIndex = if (i == mapStartIndices.length - 1) { +@@ -400,7 +406,11 @@ object ShufflePartitionsUtil extends Logging { + dataSize += mapPartitionSizes(mapIndex) + mapIndex += 1 + } +- PartialReducerPartitionSpec(reducerId, startMapIndex, endMapIndex, dataSize) ++ if (isCelebornClientAdaptiveOptimizeSkewedPartitionReadEnabled) { ++ PartialReducerPartitionSpec(reducerId, mapStartIndices.length, i, -1) Review Comment: When `isCelebornClientAdaptiveOptimizeSkewedPartitionReadEnabled`, avoid the prefix computation here entirely ? That is, avoid ``` var dataSize = 0L var mapIndex = startMapIndex while (mapIndex < endMapIndex) { dataSize += mapPartitionSizes(mapIndex) mapIndex += 1 } ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
