Github user jerryshao commented on a diff in the pull request:
https://github.com/apache/spark/pull/19047#discussion_r135247004
--- Diff:
launcher/src/main/java/org/apache/spark/launcher/AbstractCommandBuilder.java ---
@@ -136,7 +136,8 @@ void addOptionString(List<String> cmd, String options) {
Set<String> cp = new LinkedHashSet<>();
addToClassPath(cp, appClassPath);
-
+ addToClassPath(cp, getenv("SPARK_DAEMON_CLASSPATH"));
--- End diff --
I think it would be better to only support this env variable for daemon
process like HistoryServer, ExternalShuffleService and others, like what we did
for `SPARK_DAEMON_JAVA_OPTS`. Currently with your fix normal Spark application
will also honor this env variable.
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