org.apache.comet.shims.ShimCometSparkSessionExtensions.scala Maven / Gradle / Ivy
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* 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
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*/
package org.apache.comet.shims
import org.apache.spark.sql.execution.{LimitExec, QueryExecution, SparkPlan}
trait ShimCometSparkSessionExtensions {
/**
* TODO: delete after dropping Spark 3.3 support
*/
def getOffset(limit: LimitExec): Int = getOffsetOpt(limit).getOrElse(0)
/**
* TODO: delete after dropping Spark 3.x support and directly call
* SQLConf.EXTENDED_EXPLAIN_PROVIDERS.key
*/
protected val EXTENDED_EXPLAIN_PROVIDERS_KEY = "spark.sql.extendedExplainProviders"
private def getOffsetOpt(plan: SparkPlan): Option[Int] = plan.getClass.getDeclaredFields
.filter(_.getName == "offset")
.map { a => a.setAccessible(true); a.get(plan) }
.filter(_.isInstanceOf[Int])
.map(_.asInstanceOf[Int])
.headOption
// Extended info is available only since Spark 4.0.0
// (https://issues.apache.org/jira/browse/SPARK-47289)
def supportsExtendedExplainInfo(qe: QueryExecution): Boolean = {
try {
// Look for QueryExecution.extendedExplainInfo(scala.Function1[String, Unit], SparkPlan)
qe.getClass.getDeclaredMethod(
"extendedExplainInfo",
classOf[String => Unit],
classOf[SparkPlan])
} catch {
case _: NoSuchMethodException | _: SecurityException => return false
}
true
}
}