srowen commented on a change in pull request #25910: [SPARK-28762][CORE] Read
JAR main class if JAR is not located in local file system
URL: https://github.com/apache/spark/pull/25910#discussion_r328611916
##########
File path: core/src/main/scala/org/apache/spark/TestUtils.scala
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@@ -98,9 +98,20 @@ private[spark] object TestUtils {
* Create a jar file that contains this set of files. All files will be
located in the specified
* directory or at the root of the jar.
*/
- def createJar(files: Seq[File], jarFile: File, directoryPrefix:
Option[String] = None): URL = {
+ def createJar(
+ files: Seq[File],
+ jarFile: File,
+ directoryPrefix: Option[String] = None,
+ mainClass: Option[String] = None): URL = {
+ val mf = mainClass match {
+ case Some(mc) => new java.util.jar.Manifest(
Review comment:
Import this class
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