viirya commented on a change in pull request #28788:
URL: https://github.com/apache/spark/pull/28788#discussion_r439188335
##########
File path:
resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/config.scala
##########
@@ -74,10 +76,11 @@ package object config {
.doc("Whether to populate Hadoop classpath from
`yarn.application.classpath` and " +
"`mapreduce.application.classpath` Note that if this is set to `false`,
it requires " +
"a `with-Hadoop` Spark distribution that bundles Hadoop runtime or user
has to provide " +
- "a Hadoop installation separately.")
+ "a Hadoop installation separately. By default, for `with-hadoop` Spark
distribution, " +
+ "this is set to `false`; for `no-hadoop` distribution, this is set to
`true`.")
.version("2.4.6")
.booleanConf
- .createWithDefault(true)
+ .createWithDefault(isHadoopProvided())
Review comment:
I also have thought about adding to migration guide. No yarn related
migration guide, so maybe can put in core.
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