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From jiangxb1987 <>
Subject [GitHub] spark pull request #18487: [SPARK-21243][Core] Limit no. of map outputs in a...
Date Thu, 06 Jul 2017 14:47:15 GMT
Github user jiangxb1987 commented on a diff in the pull request:
    --- Diff: core/src/main/scala/org/apache/spark/internal/config/package.scala ---
    @@ -321,6 +321,16 @@ package object config {
    +  private[spark] val REDUCER_MAX_BLOCKS_IN_FLIGHT_PER_ADDRESS =
    +    ConfigBuilder("spark.reducer.maxBlocksInFlightPerAddress")
    +      .doc("This configuration limits the number of remote blocks being fetched from
a given " +
    +        " host port at any given point. When external shuffle is enabled and a large
number of " +
    --- End diff --
    How does it affect the behavior whether the external shuffle service is enabled or not?
AFAIK this should have little relation with external shuffle service.

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