[GitHub] [spark] srowen commented on a change in pull request #24713: [SPARK-26192][MESOS][2.4] Retrieve enableFetcherCache option from submission for driver URIs

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srowen commented on a change in pull request #24713: [SPARK-26192][MESOS][2.4] Retrieve enableFetcherCache option from submission for driver URIs
URL: https://github.com/apache/spark/pull/24713#discussion_r288532830
 
 

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 File path: resource-managers/mesos/src/main/scala/org/apache/spark/deploy/mesos/config.scala
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 @@ -129,4 +129,22 @@ package object config {
         "when launching drivers. Default is to accept all offers with sufficient resources.")
       .stringConf
       .createWithDefault("")
+
+  private[spark] val MAX_DRIVERS =
+    ConfigBuilder("spark.mesos.maxDrivers").intConf.createWithDefault(200)
 
 Review comment:
   Although it's not crazy to backport small enhancements, I'd not backport this change. 3.0 changes most all of the configs to use ConfigBuilder, but I don't necessarily think we want to change just a few of them in 2.4, just out of general consistency.

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