Github user WangTaoTheTonic commented on a diff in the pull request:
https://github.com/apache/spark/pull/3841#discussion_r22373227
--- 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 --
Swithing to `def` is not enough. For some port using in SparkEnv, for
instance the BlockManager's and 'http file server' port, they will not be able
to read `spark.port.maxRetries` before `env` in SparkEnv is set.
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