Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/19041#discussion_r138753970
--- Diff:
core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala ---
@@ -108,6 +110,10 @@ private[spark] class ExecutorAllocationManager(
private val cachedExecutorIdleTimeoutS = conf.getTimeAsSeconds(
"spark.dynamicAllocation.cachedExecutorIdleTimeout",
s"${Integer.MAX_VALUE}s")
+ // whether or not to try and save cached data when executors are
deallocated
+ private val replicateCachedData =
+ conf.getBoolean("spark.dynamicAllocation.recoverCachedData",
defaultValue = false)
--- End diff --
Please add a config constant in
`core/src/main/scala/org/apache/spark/internal/config/package.scala`.
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