Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/20424#discussion_r164616947
--- Diff:
core/src/main/scala/org/apache/spark/api/python/PythonWorkerFactory.scala ---
@@ -191,7 +191,20 @@ private[spark] class PythonWorkerFactory(pythonExec:
String, envVars: Map[String
daemon = pb.start()
val in = new DataInputStream(daemon.getInputStream)
- daemonPort = in.readInt()
+ try {
+ daemonPort = in.readInt()
+ } catch {
+ case exc: EOFException =>
+ throw new IOException(s"No port number in $daemonModule's
stdout")
--- End diff --
Shall we throw `SparkException(s"No port number in $daemonModule's stdout",
eof)`?
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