Github user jiangxb1987 commented on a diff in the pull request:
https://github.com/apache/spark/pull/18948#discussion_r133504106
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/StreamingContext.scala ---
@@ -144,6 +144,13 @@ class StreamingContext private[streaming] (
}
}
+ if (sc.conf.contains("spark.cores.max")) {
+ val totalCores = sc.conf.getInt("spark.cores.max", 1)
--- End diff --
The config `spark.cores.max` is used to limit the max number of cores that
a single executor can require, and as @jerryshao pointed out, it's not set by
default. I'm not convinced that validating the config can benefit your issue.
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