[SPARK-3273][SPARK-3301]We should read the version information from the same place

Author: GuoQiang Li <witgo@qq.com>

Closes #2175 from witgo/SPARK-3273 and squashes the following commits:

cf9c65a [GuoQiang Li] We should read the version information from the same place
2a44e2f [GuoQiang Li] The spark version in the welcome message of pyspark is not correct

4 files changed, 8 insertions, 6 deletions

diff --git a/core/src/main/scala/org/apache/spark/SparkContext.scala b/core/src/main/scala/org/apache/spark/SparkContext.scala
index 6eaf679476..24d1a8f9ec 100644
--- a/core/src/main/scala/org/apache/spark/SparkContext.scala
+++ b/core/src/main/scala/org/apache/spark/SparkContext.scala
@@ -49,6 +49,7 @@ import org.apache.spark.scheduler.cluster.{CoarseGrainedSchedulerBackend, SparkD
 import org.apache.spark.scheduler.cluster.mesos.{CoarseMesosSchedulerBackend, MesosSchedulerBackend}
 import org.apache.spark.scheduler.local.LocalBackend
 import org.apache.spark.storage._
+import org.apache.spark.SPARK_VERSION
 import org.apache.spark.ui.SparkUI
 import org.apache.spark.util.{CallSite, ClosureCleaner, MetadataCleaner, MetadataCleanerType, TimeStampedWeakValueHashMap, Utils}
 
@@ -825,7 +826,7 @@ class SparkContext(config: SparkConf) extends Logging {
   }
 
   /** The version of Spark on which this application is running. */
-  def version = SparkContext.SPARK_VERSION
+  def version = SPARK_VERSION
 
   /**
    * Return a map from the slave to the max memory available for caching and the remaining
@@ -1297,8 +1298,6 @@ class SparkContext(config: SparkConf) extends Logging {
  */
 object SparkContext extends Logging {
 
-  private[spark] val SPARK_VERSION = "1.2.0-SNAPSHOT"
-
   private[spark] val SPARK_JOB_DESCRIPTION = "spark.job.description"
 
   private[spark] val SPARK_JOB_GROUP_ID = "spark.jobGroup.id"
diff --git a/core/src/main/scala/org/apache/spark/package.scala b/core/src/main/scala/org/apache/spark/package.scala
index 5cdbc306e5..e2fc9c6499 100644
--- a/core/src/main/scala/org/apache/spark/package.scala
+++ b/core/src/main/scala/org/apache/spark/package.scala
@@ -44,4 +44,5 @@ package org.apache
 
 package object spark {
   // For package docs only
+  val SPARK_VERSION = "1.2.0-SNAPSHOT"
 }
diff --git a/core/src/main/scala/org/apache/spark/scheduler/EventLoggingListener.scala b/core/src/main/scala/org/apache/spark/scheduler/EventLoggingListener.scala
index 4b99f63044..64b32ae0ed 100644
--- a/core/src/main/scala/org/apache/spark/scheduler/EventLoggingListener.scala
+++ b/core/src/main/scala/org/apache/spark/scheduler/EventLoggingListener.scala
@@ -29,6 +29,7 @@ import org.json4s.jackson.JsonMethods._
 import org.apache.spark.{Logging, SparkConf, SparkContext}
 import org.apache.spark.deploy.SparkHadoopUtil
 import org.apache.spark.io.CompressionCodec
+import org.apache.spark.SPARK_VERSION
 import org.apache.spark.util.{FileLogger, JsonProtocol, Utils}
 
 /**
@@ -86,7 +87,7 @@ private[spark] class EventLoggingListener(
         sparkConf.get("spark.io.compression.codec", CompressionCodec.DEFAULT_COMPRESSION_CODEC)
       logger.newFile(COMPRESSION_CODEC_PREFIX + codec)
     }
-    logger.newFile(SPARK_VERSION_PREFIX + SparkContext.SPARK_VERSION)
+    logger.newFile(SPARK_VERSION_PREFIX + SPARK_VERSION)
     logger.newFile(LOG_PREFIX + logger.fileIndex)
   }
 
diff --git a/core/src/test/scala/org/apache/spark/scheduler/EventLoggingListenerSuite.scala b/core/src/test/scala/org/apache/spark/scheduler/EventLoggingListenerSuite.scala
index fead883793..e5315bc93e 100644
--- a/core/src/test/scala/org/apache/spark/scheduler/EventLoggingListenerSuite.scala
+++ b/core/src/test/scala/org/apache/spark/scheduler/EventLoggingListenerSuite.scala
@@ -28,6 +28,7 @@ import org.scalatest.{BeforeAndAfter, FunSuite}
 import org.apache.spark.{SparkConf, SparkContext}
 import org.apache.spark.deploy.SparkHadoopUtil
 import org.apache.spark.io.CompressionCodec
+import org.apache.spark.SPARK_VERSION
 import org.apache.spark.util.{JsonProtocol, Utils}
 
 import java.io.File
@@ -196,7 +197,7 @@ class EventLoggingListenerSuite extends FunSuite with BeforeAndAfter {
 
     def assertInfoCorrect(info: EventLoggingInfo, loggerStopped: Boolean) {
       assert(info.logPaths.size > 0)
-      assert(info.sparkVersion === SparkContext.SPARK_VERSION)
+      assert(info.sparkVersion === SPARK_VERSION)
       assert(info.compressionCodec.isDefined === compressionCodec.isDefined)
       info.compressionCodec.foreach { codec =>
         assert(compressionCodec.isDefined)
@@ -381,7 +382,7 @@ class EventLoggingListenerSuite extends FunSuite with BeforeAndAfter {
   private def assertSparkVersionIsValid(logFiles: Array[FileStatus]) {
     val file = logFiles.map(_.getPath.getName).find(EventLoggingListener.isSparkVersionFile)
     assert(file.isDefined)
-    assert(EventLoggingListener.parseSparkVersion(file.get) === SparkContext.SPARK_VERSION)
+    assert(EventLoggingListener.parseSparkVersion(file.get) === SPARK_VERSION)
   }
 
   private def assertCompressionCodecIsValid(logFiles: Array[FileStatus], compressionCodec: String) {