Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7657#discussion_r36262926
--- Diff:
yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnAllocator.scala ---
@@ -86,7 +86,7 @@ private[yarn] class YarnAllocator(
private var executorIdCounter = 0
@volatile private var numExecutorsFailed = 0
- @volatile private var targetNumExecutors = args.numExecutors
+ @volatile private var targetNumExecutors =
sparkConf.get("spark.executor.instances").toInt
--- End diff --
`sparkConf.getInt()`
Though it's a little weird, because `SparkConf.getInt()` takes a default
value. But `spark.executor.instances` should always be set after these changes,
so any dummy default should do.
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