From b55563c17ec67f56017fa6bda5a18310c38dbefb Mon Sep 17 00:00:00 2001
From: Ala Luszczak <ala@databricks.com>
Date: Wed, 15 Feb 2017 17:06:04 +0100
Subject: [SPARK-19607] Finding QueryExecution that matches provided
 executionId

## What changes were proposed in this pull request?

Implementing a mapping between executionId and corresponding QueryExecution in SQLExecution.

## How was this patch tested?

Adds a unit test.

Author: Ala Luszczak <ala@databricks.com>

Closes #16940 from ala/execution-id.
---
 .../apache/spark/sql/execution/SQLExecution.scala  |  9 ++++++
 .../spark/sql/execution/SQLExecutionSuite.scala    | 32 ++++++++++++++++++++++
 2 files changed, 41 insertions(+)

(limited to 'sql')

diff --git a/sql/core/src/main/scala/org/apache/spark/sql/execution/SQLExecution.scala b/sql/core/src/main/scala/org/apache/spark/sql/execution/SQLExecution.scala
index ec07aab359..be35916e34 100644
--- a/sql/core/src/main/scala/org/apache/spark/sql/execution/SQLExecution.scala
+++ b/sql/core/src/main/scala/org/apache/spark/sql/execution/SQLExecution.scala
@@ -17,6 +17,7 @@
 
 package org.apache.spark.sql.execution
 
+import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.atomic.AtomicLong
 
 import org.apache.spark.SparkContext
@@ -32,6 +33,12 @@ object SQLExecution {
 
   private def nextExecutionId: Long = _nextExecutionId.getAndIncrement
 
+  private val executionIdToQueryExecution = new ConcurrentHashMap[Long, QueryExecution]()
+
+  def getQueryExecution(executionId: Long): QueryExecution = {
+    executionIdToQueryExecution.get(executionId)
+  }
+
   /**
    * Wrap an action that will execute "queryExecution" to track all Spark jobs in the body so that
    * we can connect them with an execution.
@@ -44,6 +51,7 @@ object SQLExecution {
     if (oldExecutionId == null) {
       val executionId = SQLExecution.nextExecutionId
       sc.setLocalProperty(EXECUTION_ID_KEY, executionId.toString)
+      executionIdToQueryExecution.put(executionId, queryExecution)
       val r = try {
         // sparkContext.getCallSite() would first try to pick up any call site that was previously
         // set, then fall back to Utils.getCallSite(); call Utils.getCallSite() directly on
@@ -60,6 +68,7 @@ object SQLExecution {
             executionId, System.currentTimeMillis()))
         }
       } finally {
+        executionIdToQueryExecution.remove(executionId)
         sc.setLocalProperty(EXECUTION_ID_KEY, null)
       }
       r
diff --git a/sql/core/src/test/scala/org/apache/spark/sql/execution/SQLExecutionSuite.scala b/sql/core/src/test/scala/org/apache/spark/sql/execution/SQLExecutionSuite.scala
index ad41111bec..b059706783 100644
--- a/sql/core/src/test/scala/org/apache/spark/sql/execution/SQLExecutionSuite.scala
+++ b/sql/core/src/test/scala/org/apache/spark/sql/execution/SQLExecutionSuite.scala
@@ -20,6 +20,7 @@ package org.apache.spark.sql.execution
 import java.util.Properties
 
 import org.apache.spark.{SparkConf, SparkContext, SparkFunSuite}
+import org.apache.spark.scheduler.{SparkListener, SparkListenerJobStart}
 import org.apache.spark.sql.SparkSession
 
 class SQLExecutionSuite extends SparkFunSuite {
@@ -102,6 +103,33 @@ class SQLExecutionSuite extends SparkFunSuite {
     }
   }
 
+
+  test("Finding QueryExecution for given executionId") {
+    val spark = SparkSession.builder.master("local[*]").appName("test").getOrCreate()
+    import spark.implicits._
+
+    var queryExecution: QueryExecution = null
+
+    spark.sparkContext.addSparkListener(new SparkListener {
+      override def onJobStart(jobStart: SparkListenerJobStart): Unit = {
+        val executionIdStr = jobStart.properties.getProperty(SQLExecution.EXECUTION_ID_KEY)
+        if (executionIdStr != null) {
+          queryExecution = SQLExecution.getQueryExecution(executionIdStr.toLong)
+        }
+        SQLExecutionSuite.canProgress = true
+      }
+    })
+
+    val df = spark.range(1).map { x =>
+      while (!SQLExecutionSuite.canProgress) {
+        Thread.sleep(1)
+      }
+      x
+    }
+    df.collect()
+
+    assert(df.queryExecution === queryExecution)
+  }
 }
 
 /**
@@ -114,3 +142,7 @@ private class BadSparkContext(conf: SparkConf) extends SparkContext(conf) {
     override protected def initialValue(): Properties = new Properties()
   }
 }
+
+object SQLExecutionSuite {
+  @volatile var canProgress = false
+}
-- 
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