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https://issues.apache.org/jira/browse/KYLIN-4925?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17347459#comment-17347459
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ASF GitHub Bot commented on KYLIN-4925:
---------------------------------------
zzcclp commented on a change in pull request #1601:
URL: https://github.com/apache/kylin/pull/1601#discussion_r635033446
##########
File path:
kylin-spark-project/kylin-spark-common/src/main/spark31/org/apache/spark/sql/execution/KylinFileSourceScanExec.scala
##########
@@ -0,0 +1,252 @@
+/*
+ * 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.execution
+
+import org.apache.hadoop.fs.{BlockLocation, FileStatus, LocatedFileStatus,
Path}
+import org.apache.kylin.common.KylinConfig
+import org.apache.spark.rdd.RDD
+import org.apache.spark.sql.catalyst.expressions.{Ascending, Attribute,
Expression, ExpressionUtils, SortOrder}
+import org.apache.spark.sql.catalyst.plans.physical.{HashPartitioning,
Partitioning, UnknownPartitioning}
+import org.apache.spark.sql.catalyst.{InternalRow, TableIdentifier}
+import org.apache.spark.sql.execution.datasource.{FilePruner, ShardSpec}
+import org.apache.spark.sql.execution.datasources._
+import org.apache.spark.sql.execution.metric.SQLMetrics
+import org.apache.spark.sql.types.StructType
+
+import scala.collection.mutable.ArrayBuffer
+
+class KylinFileSourceScanExec(
+ @transient override val relation: HadoopFsRelation,
+ override val output: Seq[Attribute],
+ override val requiredSchema: StructType,
+ override val partitionFilters: Seq[Expression],
+ val optionalShardSpec: Option[ShardSpec],
+ override val dataFilters: Seq[Expression],
+ override val tableIdentifier: Option[TableIdentifier]) extends
FileSourceScanExec(
+ relation, output, requiredSchema, partitionFilters, None, None, dataFilters,
tableIdentifier, false) {
+
+ private lazy val _inputRDD: RDD[InternalRow] = {
+ val readFile: (PartitionedFile) => Iterator[InternalRow] =
+ relation.fileFormat.buildReaderWithPartitionValues(
+ sparkSession = relation.sparkSession,
+ dataSchema = relation.dataSchema,
+ partitionSchema = relation.partitionSchema,
+ requiredSchema = requiredSchema,
+ filters = pushedDownFilters,
+ options = relation.options,
+ hadoopConf =
relation.sparkSession.sessionState.newHadoopConfWithOptions(relation.options))
+
+ optionalShardSpec match {
+ case Some(spec) if
KylinConfig.getInstanceFromEnv.isShardingJoinOptEnabled =>
+ createShardingReadRDD(spec, readFile, selectedPartitions, relation)
+ case _ =>
+ createNonShardingReadRDD(readFile, selectedPartitions, relation)
+ }
Review comment:
Please reference to the implementation of FileSourceScanExec.
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> Use Spark 3 as build and query engine for Kylin 4
> -------------------------------------------------
>
> Key: KYLIN-4925
> URL: https://issues.apache.org/jira/browse/KYLIN-4925
> Project: Kylin
> Issue Type: New Feature
> Components: Job Engine, Query Engine
> Reporter: Congling Xia
> Assignee: Congling Xia
> Priority: Major
> Fix For: v4.0.0-GA
>
>
> Spark 3 provides much more developed AQE framework, DPP and the increased
> support for GPUs and Kubernetes. The perspectives of performance increase are
> very promising.
> Currently, we try to run Kylin 4.0 with Spark 3.0 as build & query engine.
> We'd like to share the code changes here.
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