spark-patches/spark-3.2.1_dynamic_allocation_support.patch

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diff --git a/core/src/main/scala/org/apache/spark/Dependency.scala b/core/src/main/scala/org/apache/spark/Dependency.scala
index 1b4e7ba5106..95818ff72ca 100644
--- a/core/src/main/scala/org/apache/spark/Dependency.scala
+++ b/core/src/main/scala/org/apache/spark/Dependency.scala
@@ -174,8 +174,10 @@ class ShuffleDependency[K: ClassTag, V: ClassTag, C: ClassTag](
       !rdd.isBarrier()
   }
 
-  _rdd.sparkContext.cleaner.foreach(_.registerShuffleForCleanup(this))
-  _rdd.sparkContext.shuffleDriverComponents.registerShuffle(shuffleId)
+  if (!_rdd.context.getConf.isRssEnable()) {
+    _rdd.sparkContext.cleaner.foreach(_.registerShuffleForCleanup(this))
+    _rdd.sparkContext.shuffleDriverComponents.registerShuffle(shuffleId)
+  }
 }
 
 
diff --git a/core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala b/core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala
index c4b619300b5..821a01985d9 100644
--- a/core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala
+++ b/core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala
@@ -207,7 +207,9 @@ private[spark] class ExecutorAllocationManager(
       // If dynamic allocation shuffle tracking or worker decommissioning along with
       // storage shuffle decommissioning is enabled we have *experimental* support for
       // decommissioning without a shuffle service.
-      if (conf.get(config.DYN_ALLOCATION_SHUFFLE_TRACKING_ENABLED) ||
+      if (conf.isRssEnable()) {
+        logInfo("Dynamic allocation will use remote shuffle service")
+      } else if (conf.get(config.DYN_ALLOCATION_SHUFFLE_TRACKING_ENABLED) ||
           (decommissionEnabled &&
             conf.get(config.STORAGE_DECOMMISSION_SHUFFLE_BLOCKS_ENABLED))) {
         logWarning("Dynamic allocation without a shuffle service is an experimental feature.")
diff --git a/core/src/main/scala/org/apache/spark/SparkConf.scala b/core/src/main/scala/org/apache/spark/SparkConf.scala
index 5f37a1abb19..af4bee1e1bb 100644
--- a/core/src/main/scala/org/apache/spark/SparkConf.scala
+++ b/core/src/main/scala/org/apache/spark/SparkConf.scala
@@ -580,6 +580,10 @@ class SparkConf(loadDefaults: Boolean) extends Cloneable with Logging with Seria
     Utils.redact(this, getAll).sorted.map { case (k, v) => k + "=" + v }.mkString("\n")
   }
 
+  /**
+   * Return true if remote shuffle service is enabled.
+   */
+  def isRssEnable(): Boolean = get("spark.shuffle.manager", "sort").contains("RssShuffleManager")
 }
 
 private[spark] object SparkConf extends Logging {
diff --git a/core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala b/core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala
index a82d261d545..72e54940ca2 100644
--- a/core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala
+++ b/core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala
@@ -2231,7 +2231,8 @@ private[spark] class DAGScheduler(
     // if the cluster manager explicitly tells us that the entire worker was lost, then
     // we know to unregister shuffle output.  (Note that "worker" specifically refers to the process
     // from a Standalone cluster, where the shuffle service lives in the Worker.)
-    val fileLost = workerHost.isDefined || !env.blockManager.externalShuffleServiceEnabled
+    val fileLost = (workerHost.isDefined || !env.blockManager.externalShuffleServiceEnabled) &&
+      !sc.getConf.isRssEnable()
     removeExecutorAndUnregisterOutputs(
       execId = execId,
       fileLost = fileLost,
diff --git a/core/src/main/scala/org/apache/spark/scheduler/TaskSetManager.scala b/core/src/main/scala/org/apache/spark/scheduler/TaskSetManager.scala
index 3b72103f993..8e03754941e 100644
--- a/core/src/main/scala/org/apache/spark/scheduler/TaskSetManager.scala
+++ b/core/src/main/scala/org/apache/spark/scheduler/TaskSetManager.scala
@@ -1015,7 +1015,8 @@ private[spark] class TaskSetManager(
     // and we are not using an external shuffle server which could serve the shuffle outputs.
     // The reason is the next stage wouldn't be able to fetch the data from this dead executor
     // so we would need to rerun these tasks on other executors.
-    if (isShuffleMapTasks && !env.blockManager.externalShuffleServiceEnabled && !isZombie) {
+    if (isShuffleMapTasks && !env.blockManager.externalShuffleServiceEnabled &&
+        !isZombie && !conf.isRssEnable()) {
       for ((tid, info) <- taskInfos if info.executorId == execId) {
         val index = taskInfos(tid).index
         // We may have a running task whose partition has been marked as successful,
diff --git a/sql/core/src/main/scala/org/apache/spark/sql/execution/ShuffledRowRDD.scala b/sql/core/src/main/scala/org/apache/spark/sql/execution/ShuffledRowRDD.scala
index 47d61196fe8..98a5381bef4 100644
--- a/sql/core/src/main/scala/org/apache/spark/sql/execution/ShuffledRowRDD.scala
+++ b/sql/core/src/main/scala/org/apache/spark/sql/execution/ShuffledRowRDD.scala
@@ -174,6 +174,9 @@ class ShuffledRowRDD(
   }
 
   override def getPreferredLocations(partition: Partition): Seq[String] = {
+    if (conf.isRssEnable()) {
+      return Nil
+    }
     val tracker = SparkEnv.get.mapOutputTracker.asInstanceOf[MapOutputTrackerMaster]
     partition.asInstanceOf[ShuffledRowRDDPartition].spec match {
       case CoalescedPartitionSpec(startReducerIndex, endReducerIndex, _) =>
-- 
2.32.0