Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/3841#discussion_r22373048
--- Diff: core/src/main/scala/org/apache/spark/util/Utils.scala ---
@@ -1691,15 +1691,12 @@ private[spark] object Utils extends Logging {
/**
* Default maximum number of retries when binding to a port before
giving up.
*/
- val portMaxRetries: Int = {
+ lazy val portMaxRetries: Int = {
--- End diff --
If we just switch this to a `def`, then do we need the system properties
changes, too? Or will just making this a `def` be sufficient? I'm just a bit
wary / skeptical of code that uses system properties because I just spent a
bunch of time cleaning up uses of properties in tests: #3739.
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