Github user ilganeli commented on a diff in the pull request:
https://github.com/apache/spark/pull/5574#discussion_r28905078
--- Diff: core/src/main/scala/org/apache/spark/SparkConf.scala ---
@@ -432,6 +505,21 @@ private[spark] object SparkConf extends Logging {
AlternateConfig("spark.yarn.applicationMaster.waitTries", "1.3",
// Translate old value to a duration, with 10s wait time per try.
translation = s => s"${s.toLong * 10}s")),
+ "spark.reducer.maxSizeInFlight" -> Seq(
+ AlternateConfig("spark.reducer.maxMbInFlight", "1.4")),
+ "spark.kryoserializer.buffer" ->
+ Seq(AlternateConfig("spark.kryoserializer.buffer.mb", "1.4",
+ translation = s => s"${s.toDouble * 1000}k")),
--- End diff --
This automatic translation may throw a NumberFormatException if someone
tries to use the .mb parameter as "64k" (e.g. the correct new format). Is that
a case we should be concerned with? There will be enough warnings and errors
thrown for them to readily track down the problem and fix the erroneous config
so this should be ok but want to confirm that.
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