Github user sryza commented on a diff in the pull request:
https://github.com/apache/spark/pull/4818#discussion_r25555088
--- Diff:
yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnAllocator.scala ---
@@ -290,8 +290,19 @@ private[yarn] class YarnAllocator(
location: String,
containersToUse: ArrayBuffer[Container],
remaining: ArrayBuffer[Container]): Unit = {
+ // SPARK-6050: certain Yarn configurations return a virtual core count
that doesn't match the
+ // request; for example, capacity scheduler +
DefaultResourceCalculator. Allow users in those
+ // situations to disable matching of the core count.
+ val matchingResource =
+ if (sparkConf.getBoolean("spark.yarn.container.disableCpuMatching",
false)) {
+ Resource.newInstance(allocatedContainer.getResource().getMemory(),
--- End diff --
Nit: take out parens for consistency.
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