Github user gengliangwang commented on a diff in the pull request:
https://github.com/apache/spark/pull/20297#discussion_r162548031
--- Diff:
launcher/src/main/java/org/apache/spark/launcher/LauncherConnection.java ---
@@ -95,15 +95,15 @@ protected synchronized void send(Message msg) throws
IOException {
}
@Override
- public void close() throws IOException {
+ public synchronized void close() throws IOException {
if (!closed) {
--- End diff --
=> isOpen
---
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