Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/22770#discussion_r226459546
--- Diff:
core/src/main/scala/org/apache/spark/api/python/PythonWorkerFactory.scala ---
@@ -278,7 +289,7 @@ private[spark] class PythonWorkerFactory(pythonExec:
String, envVars: Map[String
override def run() {
while (true) {
- synchronized {
+ self.synchronized {
--- End diff --
this is fix 1
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