Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/3561#discussion_r22067557
--- Diff:
core/src/main/scala/org/apache/spark/deploy/SparkSubmitArguments.scala ---
@@ -123,14 +124,21 @@ private[spark] class SparkSubmitArguments(args:
Seq[String], env: Map[String, St
// Try to set main class from JAR if no --class argument is given
if (mainClass == null && !isPython && primaryResource != null) {
- try {
- val jar = new JarFile(primaryResource)
- // Note that this might still return null if no main-class is set;
we catch that later
- mainClass =
jar.getManifest.getMainAttributes.getValue("Main-Class")
- } catch {
- case e: Exception =>
- SparkSubmit.printErrorAndExit("Cannot load main class from JAR:
" + primaryResource)
- return
+ val uri = new URI(primaryResource)
+ val uriScheme = uri.getScheme()
+ // Note that this might still return null if no main-class is set;
we catch that later
--- End diff --
```
// Note that this might still return null if no main-class is set; we catch
that later
```
I'm confused, what might still return null? I don't think this comment is
super necessary.
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