solve conflicts

Author: zhzhan

assembly/pom.xml

@@ -141,7 +141,9 @@
                     <include>com.google.common.**</include>
                   </includes>
                   <excludes>
-                    <exclude>com.google.common.base.Optional**</exclude>
+                    <exclude>com/google/common/base/Absent*</exclude>
+                    <exclude>com/google/common/base/Optional*</exclude>
+                    <exclude>com/google/common/base/Present*</exclude>
                   </excludes>
                 </relocation>
               </relocations>

core/pom.xml

@@ -343,7 +343,9 @@
                 <filter>
                   <artifact>com.google.guava:guava</artifact>
                   <includes>
+                    <include>com/google/common/base/Absent*</include>
                     <include>com/google/common/base/Optional*</include>
+                    <include>com/google/common/base/Present*</include>
                   </includes>
                 </filter>
               </filters>

core/src/main/scala/org/apache/spark/SparkContext.scala

@@ -1030,28 +1030,40 @@ class SparkContext(config: SparkConf) extends Logging {
   }
 
   /**
-   * Support function for API backtraces.
+   * Set the thread-local property for overriding the call sites
+   * of actions and RDDs.
    */
-  def setCallSite(site: String) {
-    setLocalProperty("externalCallSite", site)
+  def setCallSite(shortCallSite: String) {
+    setLocalProperty(CallSite.SHORT_FORM, shortCallSite)
   }
 
   /**
-   * Support function for API backtraces.
+   * Set the thread-local property for overriding the call sites
+   * of actions and RDDs.
+   */
+  private[spark] def setCallSite(callSite: CallSite) {
+    setLocalProperty(CallSite.SHORT_FORM, callSite.shortForm)
+    setLocalProperty(CallSite.LONG_FORM, callSite.longForm)
+  }
+
+  /**
+   * Clear the thread-local property for overriding the call sites
+   * of actions and RDDs.
    */
   def clearCallSite() {
-    setLocalProperty("externalCallSite", null)
+    setLocalProperty(CallSite.SHORT_FORM, null)
+    setLocalProperty(CallSite.LONG_FORM, null)
   }
 
   /**
    * Capture the current user callsite and return a formatted version for printing. If the user
-   * has overridden the call site, this will return the user's version.
+   * has overridden the call site using `setCallSite()`, this will return the user's version.
    */
   private[spark] def getCallSite(): CallSite = {
-    Option(getLocalProperty("externalCallSite")) match {
-      case Some(callSite) => CallSite(callSite, longForm = "")
-      case None => Utils.getCallSite
-    }
+    Option(getLocalProperty(CallSite.SHORT_FORM)).map { case shortCallSite =>
+      val longCallSite = Option(getLocalProperty(CallSite.LONG_FORM)).getOrElse("")
+      CallSite(shortCallSite, longCallSite)
+    }.getOrElse(Utils.getCallSite())
   }
 
   /**

core/src/main/scala/org/apache/spark/api/java/JavaPairRDD.scala

@@ -469,6 +469,22 @@ class JavaPairRDD[K, V](val rdd: RDD[(K, V)])
     fromRDD(joinResult.mapValues{case (v, w) => (JavaUtils.optionToOptional(v), w)})
   }
 
+  /**
+   * Perform a full outer join of `this` and `other`. For each element (k, v) in `this`, the
+   * resulting RDD will either contain all pairs (k, (Some(v), Some(w))) for w in `other`, or
+   * the pair (k, (Some(v), None)) if no elements in `other` have key k. Similarly, for each
+   * element (k, w) in `other`, the resulting RDD will either contain all pairs
+   * (k, (Some(v), Some(w))) for v in `this`, or the pair (k, (None, Some(w))) if no elements
+   * in `this` have key k. Uses the given Partitioner to partition the output RDD.
+   */
+  def fullOuterJoin[W](other: JavaPairRDD[K, W], partitioner: Partitioner)
+  : JavaPairRDD[K, (Optional[V], Optional[W])] = {
+    val joinResult = rdd.fullOuterJoin(other, partitioner)
+    fromRDD(joinResult.mapValues{ case (v, w) =>
+      (JavaUtils.optionToOptional(v), JavaUtils.optionToOptional(w))
+    })
+  }
+
   /**
    * Simplified version of combineByKey that hash-partitions the resulting RDD using the existing
    * partitioner/parallelism level.
@@ -563,6 +579,38 @@ class JavaPairRDD[K, V](val rdd: RDD[(K, V)])
     fromRDD(joinResult.mapValues{case (v, w) => (JavaUtils.optionToOptional(v), w)})
   }
 
+  /**
+   * Perform a full outer join of `this` and `other`. For each element (k, v) in `this`, the
+   * resulting RDD will either contain all pairs (k, (Some(v), Some(w))) for w in `other`, or
+   * the pair (k, (Some(v), None)) if no elements in `other` have key k. Similarly, for each
+   * element (k, w) in `other`, the resulting RDD will either contain all pairs
+   * (k, (Some(v), Some(w))) for v in `this`, or the pair (k, (None, Some(w))) if no elements
+   * in `this` have key k. Hash-partitions the resulting RDD using the existing partitioner/
+   * parallelism level.
+   */
+  def fullOuterJoin[W](other: JavaPairRDD[K, W]): JavaPairRDD[K, (Optional[V], Optional[W])] = {
+    val joinResult = rdd.fullOuterJoin(other)
+    fromRDD(joinResult.mapValues{ case (v, w) =>
+      (JavaUtils.optionToOptional(v), JavaUtils.optionToOptional(w))
+    })
+  }
+
+  /**
+   * Perform a full outer join of `this` and `other`. For each element (k, v) in `this`, the
+   * resulting RDD will either contain all pairs (k, (Some(v), Some(w))) for w in `other`, or
+   * the pair (k, (Some(v), None)) if no elements in `other` have key k. Similarly, for each
+   * element (k, w) in `other`, the resulting RDD will either contain all pairs
+   * (k, (Some(v), Some(w))) for v in `this`, or the pair (k, (None, Some(w))) if no elements
+   * in `this` have key k. Hash-partitions the resulting RDD into the given number of partitions.
+   */
+  def fullOuterJoin[W](other: JavaPairRDD[K, W], numPartitions: Int)
+  : JavaPairRDD[K, (Optional[V], Optional[W])] = {
+    val joinResult = rdd.fullOuterJoin(other, numPartitions)
+    fromRDD(joinResult.mapValues{ case (v, w) =>
+      (JavaUtils.optionToOptional(v), JavaUtils.optionToOptional(w))
+    })
+  }
+
   /**
    * Return the key-value pairs in this RDD to the master as a Map.
    */

core/src/main/scala/org/apache/spark/deploy/SparkSubmitArguments.scala

@@ -75,6 +75,10 @@ private[spark] class SparkSubmitArguments(args: Seq[String]) {
     defaultProperties
   }
 
+  // Respect SPARK_*_MEMORY for cluster mode
+  driverMemory = sys.env.get("SPARK_DRIVER_MEMORY").orNull
+  executorMemory = sys.env.get("SPARK_EXECUTOR_MEMORY").orNull
+
   parseOpts(args.toList)
   mergeSparkProperties()
   checkRequiredArguments()

core/src/main/scala/org/apache/spark/executor/Executor.scala

@@ -24,6 +24,7 @@ import java.util.concurrent._
 
 import scala.collection.JavaConversions._
 import scala.collection.mutable.{ArrayBuffer, HashMap}
+import scala.util.control.NonFatal
 
 import org.apache.spark._
 import org.apache.spark.deploy.SparkHadoopUtil
@@ -375,12 +376,17 @@ private[spark] class Executor(
           }
 
           val message = Heartbeat(executorId, tasksMetrics.toArray, env.blockManager.blockManagerId)
-          val response = AkkaUtils.askWithReply[HeartbeatResponse](message, heartbeatReceiverRef,
-            retryAttempts, retryIntervalMs, timeout)
-          if (response.reregisterBlockManager) {
-            logWarning("Told to re-register on heartbeat")
-            env.blockManager.reregister()
+          try {
+            val response = AkkaUtils.askWithReply[HeartbeatResponse](message, heartbeatReceiverRef,
+              retryAttempts, retryIntervalMs, timeout)
+            if (response.reregisterBlockManager) {
+              logWarning("Told to re-register on heartbeat")
+              env.blockManager.reregister()
+            }
+          } catch {
+            case NonFatal(t) => logWarning("Issue communicating with driver in heartbeater", t)
           }
+
           Thread.sleep(interval)
         }
       }

core/src/main/scala/org/apache/spark/rdd/PairRDDFunctions.scala

@@ -506,6 +506,23 @@ class PairRDDFunctions[K, V](self: RDD[(K, V)])
     }
   }
 
+  /**
+   * Perform a full outer join of `this` and `other`. For each element (k, v) in `this`, the
+   * resulting RDD will either contain all pairs (k, (Some(v), Some(w))) for w in `other`, or
+   * the pair (k, (Some(v), None)) if no elements in `other` have key k. Similarly, for each
+   * element (k, w) in `other`, the resulting RDD will either contain all pairs
+   * (k, (Some(v), Some(w))) for v in `this`, or the pair (k, (None, Some(w))) if no elements
+   * in `this` have key k. Uses the given Partitioner to partition the output RDD.
+   */
+  def fullOuterJoin[W](other: RDD[(K, W)], partitioner: Partitioner)
+      : RDD[(K, (Option[V], Option[W]))] = {
+    this.cogroup(other, partitioner).flatMapValues {
+      case (vs, Seq()) => vs.map(v => (Some(v), None))
+      case (Seq(), ws) => ws.map(w => (None, Some(w)))
+      case (vs, ws) => for (v <- vs; w <- ws) yield (Some(v), Some(w))
+    }
+  }
+
   /**
    * Simplified version of combineByKey that hash-partitions the resulting RDD using the
    * existing partitioner/parallelism level.
@@ -585,6 +602,31 @@ class PairRDDFunctions[K, V](self: RDD[(K, V)])
     rightOuterJoin(other, new HashPartitioner(numPartitions))
   }
 
+  /**
+   * Perform a full outer join of `this` and `other`. For each element (k, v) in `this`, the
+   * resulting RDD will either contain all pairs (k, (Some(v), Some(w))) for w in `other`, or
+   * the pair (k, (Some(v), None)) if no elements in `other` have key k. Similarly, for each
+   * element (k, w) in `other`, the resulting RDD will either contain all pairs
+   * (k, (Some(v), Some(w))) for v in `this`, or the pair (k, (None, Some(w))) if no elements
+   * in `this` have key k. Hash-partitions the resulting RDD using the existing partitioner/
+   * parallelism level.
+   */
+  def fullOuterJoin[W](other: RDD[(K, W)]): RDD[(K, (Option[V], Option[W]))] = {
+    fullOuterJoin(other, defaultPartitioner(self, other))
+  }
+
+  /**
+   * Perform a full outer join of `this` and `other`. For each element (k, v) in `this`, the
+   * resulting RDD will either contain all pairs (k, (Some(v), Some(w))) for w in `other`, or
+   * the pair (k, (Some(v), None)) if no elements in `other` have key k. Similarly, for each
+   * element (k, w) in `other`, the resulting RDD will either contain all pairs
+   * (k, (Some(v), Some(w))) for v in `this`, or the pair (k, (None, Some(w))) if no elements
+   * in `this` have key k. Hash-partitions the resulting RDD into the given number of partitions.
+   */
+  def fullOuterJoin[W](other: RDD[(K, W)], numPartitions: Int): RDD[(K, (Option[V], Option[W]))] = {
+    fullOuterJoin(other, new HashPartitioner(numPartitions))
+  }
+
   /**
    * Return the key-value pairs in this RDD to the master as a Map.
    *

core/src/main/scala/org/apache/spark/rdd/RDD.scala

@@ -17,7 +17,7 @@
 
 package org.apache.spark.rdd
 
-import java.util.Random
+import java.util.{Properties, Random}
 
 import scala.collection.{mutable, Map}
 import scala.collection.mutable.ArrayBuffer
@@ -41,7 +41,7 @@ import org.apache.spark.partial.CountEvaluator
 import org.apache.spark.partial.GroupedCountEvaluator
 import org.apache.spark.partial.PartialResult
 import org.apache.spark.storage.StorageLevel
-import org.apache.spark.util.{BoundedPriorityQueue, Utils}
+import org.apache.spark.util.{BoundedPriorityQueue, Utils, CallSite}
 import org.apache.spark.util.collection.OpenHashMap
 import org.apache.spark.util.random.{BernoulliSampler, PoissonSampler, SamplingUtils}
 
@@ -1224,7 +1224,8 @@ abstract class RDD[T: ClassTag](
   private var storageLevel: StorageLevel = StorageLevel.NONE
 
   /** User code that created this RDD (e.g. `textFile`, `parallelize`). */
-  @transient private[spark] val creationSite = Utils.getCallSite
+  @transient private[spark] val creationSite = sc.getCallSite()
+
   private[spark] def getCreationSite: String = Option(creationSite).map(_.shortForm).getOrElse("")
 
   private[spark] def elementClassTag: ClassTag[T] = classTag[T]

core/src/main/scala/org/apache/spark/util/Utils.scala

@@ -49,6 +49,11 @@ import org.apache.spark.serializer.{DeserializationStream, SerializationStream,
 /** CallSite represents a place in user code. It can have a short and a long form. */
 private[spark] case class CallSite(shortForm: String, longForm: String)
 
+private[spark] object CallSite {
+  val SHORT_FORM = "callSite.short"
+  val LONG_FORM = "callSite.long"
+}
+
 /**
  * Various utility methods used by Spark.
  */
@@ -859,18 +864,26 @@ private[spark] object Utils extends Logging {
     }
   }
 
-  /**
-   * A regular expression to match classes of the "core" Spark API that we want to skip when
-   * finding the call site of a method.
-   */
-  private val SPARK_CLASS_REGEX = """^org\.apache\.spark(\.api\.java)?(\.util)?(\.rdd)?\.[A-Z]""".r
+  /** Default filtering function for finding call sites using `getCallSite`. */
+  private def coreExclusionFunction(className: String): Boolean = {
+    // A regular expression to match classes of the "core" Spark API that we want to skip when
+    // finding the call site of a method.
+    val SPARK_CORE_CLASS_REGEX = """^org\.apache\.spark(\.api\.java)?(\.util)?(\.rdd)?\.[A-Z]""".r
+    val SCALA_CLASS_REGEX = """^scala""".r
+    val isSparkCoreClass = SPARK_CORE_CLASS_REGEX.findFirstIn(className).isDefined
+    val isScalaClass = SCALA_CLASS_REGEX.findFirstIn(className).isDefined
+    // If the class is a Spark internal class or a Scala class, then exclude.
+    isSparkCoreClass || isScalaClass
+  }
 
   /**
    * When called inside a class in the spark package, returns the name of the user code class
    * (outside the spark package) that called into Spark, as well as which Spark method they called.
    * This is used, for example, to tell users where in their code each RDD got created.
+   *
+   * @param skipClass Function that is used to exclude non-user-code classes.
    */
-  def getCallSite: CallSite = {
+  def getCallSite(skipClass: String => Boolean = coreExclusionFunction): CallSite = {
     val trace = Thread.currentThread.getStackTrace()
       .filterNot { ste:StackTraceElement =>
         // When running under some profilers, the current stack trace might contain some bogus
@@ -891,7 +904,7 @@ private[spark] object Utils extends Logging {
 
     for (el <- trace) {
       if (insideSpark) {
-        if (SPARK_CLASS_REGEX.findFirstIn(el.getClassName).isDefined) {
+        if (skipClass(el.getClassName)) {
           lastSparkMethod = if (el.getMethodName == "<init>") {
             // Spark method is a constructor; get its class name
             el.getClassName.substring(el.getClassName.lastIndexOf('.') + 1)

core/src/test/java/org/apache/spark/JavaAPISuite.java

@@ -1307,4 +1307,30 @@ public void collectUnderlyingScalaRDD() {
     SomeCustomClass[] collected = (SomeCustomClass[]) rdd.rdd().retag(SomeCustomClass.class).collect();
     Assert.assertEquals(data.size(), collected.length);
   }
+
+  /**
+   * Test for SPARK-3647. This test needs to use the maven-built assembly to trigger the issue,
+   * since that's the only artifact where Guava classes have been relocated.
+   */
+  @Test
+  public void testGuavaOptional() {
+    // Stop the context created in setUp() and start a local-cluster one, to force usage of the
+    // assembly.
+    sc.stop();
+    JavaSparkContext localCluster = new JavaSparkContext("local-cluster[1,1,512]", "JavaAPISuite");
+    try {
+      JavaRDD<Integer> rdd1 = localCluster.parallelize(Arrays.asList(1, 2, null), 3);
+      JavaRDD<Optional<Integer>> rdd2 = rdd1.map(
+        new Function<Integer, Optional<Integer>>() {
+          @Override
+          public Optional<Integer> call(Integer i) {
+            return Optional.fromNullable(i);
+          }
+        });
+      rdd2.collect();
+    } finally {
+      localCluster.stop();
+    }
+  }
+
 }