HyukjinKwon commented on a change in pull request #31244:
URL: https://github.com/apache/spark/pull/31244#discussion_r560076501
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File path: core/src/main/scala/org/apache/spark/util/Utils.scala
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@@ -1939,7 +1939,15 @@ private[spark] object Utils extends Logging {
* Indicates whether Spark is currently running unit tests.
*/
def isTesting: Boolean = {
Review comment:
I understand that this change tried to be conservative to avoid any
breakage but `isTesting` isn't an API (it's `private[spark] object Utils` so
it's fine to directly change `def isTesting` to `lazy val isTesting`
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