[GitHub] dongjoon-hyun commented on a change in pull request #23743: [SPARK-26843][MESOS] Use ConfigEntry for hardcoded configs for "mesos" resource manager

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dongjoon-hyun commented on a change in pull request #23743: [SPARK-26843][MESOS] Use ConfigEntry for hardcoded configs for "mesos" resource manager
URL: https://github.com/apache/spark/pull/23743#discussion_r254780738
 
 

 ##########
 File path: resource-managers/mesos/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosSchedulerBackendUtil.scala
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 @@ -34,11 +34,11 @@ import org.apache.spark.internal.Logging
  */
 private[mesos] object MesosSchedulerBackendUtil extends Logging {
   /**
-   * Parse a comma-delimited list of volume specs, each of which
+   * Parse a list of volume specs, each of which
    * takes the form [host-dir:]container-dir[:rw|:ro].
    */
-  def parseVolumesSpec(volumes: String): List[Volume] = {
-    volumes.split(",").map(_.split(":")).flatMap { spec =>
+  def parseVolumesSpec(volumes: Seq[String]): List[Volume] = {
 
 Review comment:
   @HeartSaVioR .
   Why do we change this function signature silently in this `Use ConfigEntry ...` PR?

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