[GitHub] [spark] manuzhang commented on a change in pull request #25299: [SPARK-27651][Core] Avoid the network when shuffle blocks are fetched from the same host

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manuzhang commented on a change in pull request #25299: [SPARK-27651][Core] Avoid the network when shuffle blocks are fetched from the same host
URL: https://github.com/apache/spark/pull/25299#discussion_r356946746
 
 

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 File path: core/src/main/scala/org/apache/spark/internal/config/package.scala
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 @@ -1075,6 +1075,24 @@ package object config {
       .booleanConf
       .createWithDefault(false)
 
+  private[spark] val SHUFFLE_HOST_LOCAL_DISK_READING_ENABLED =
+    ConfigBuilder("spark.shuffle.readHostLocalDisk.enabled")
 
 Review comment:
   @attilapiros @cloud-fan @squito @tgravescs @vanzin,
   I think we need to mention in migration guide that this option must be disabled for old shuffle service.

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