Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/11603#discussion_r55570509
--- Diff: yarn/src/main/scala/org/apache/spark/deploy/yarn/config.scala ---
@@ -177,14 +177,26 @@ package object config {
private[spark] val DRIVER_CORES = ConfigBuilder("spark.driver.cores")
.intConf
- .optional
+ .withDefault(1)
private[spark] val DRIVER_MEMORY_OVERHEAD =
ConfigBuilder("spark.yarn.driver.memoryOverhead")
.bytesConf(ByteUnit.MiB)
.optional
+ private[spark] val DRIVER_MEMORY = ConfigBuilder("spark.driver.memory")
--- End diff --
This is a core config, so should be declared in
`core/src/main/scala/org/apache/spark/internal/config/package.scala` instead.
Same for `EXECUTOR_MEMORY`, `PY_FILES`, and probably also `EXECUTOR_CORES`,
although not completely sure about that last one.
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