Github user bomeng commented on a diff in the pull request:
https://github.com/apache/spark/pull/13543#discussion_r66701686
--- Diff:
core/src/main/scala/org/apache/spark/deploy/master/MasterArguments.scala ---
@@ -20,18 +20,24 @@ package org.apache.spark.deploy.master
import scala.annotation.tailrec
import org.apache.spark.SparkConf
+import org.apache.spark.internal.Logging
import org.apache.spark.util.{IntParam, Utils}
/**
* Command-line parser for the master.
*/
-private[master] class MasterArguments(args: Array[String], conf:
SparkConf) {
+private[master] class MasterArguments(args: Array[String], conf:
SparkConf) extends Logging {
var host = Utils.localHostName()
var port = 7077
var webUiPort = 8080
var propertiesFile: String = null
// Check for settings in environment variables
+ if (System.getenv("SPARK_MASTER_IP") != null) {
+ logWarning("SPARK_MASTER_IP is deprecated, please use
SPARK_MASTER_HOST")
+ host = System.getenv("SPARK_MASTER_IP")
+ }
+
if (System.getenv("SPARK_MASTER_HOST") != null) {
--- End diff --
Master.scala create an instance of MasterArguments (line 1008), and
MasterArguments will read environment as its initial values (includes
SPARK_MASTER_HOST), that is the original logic. User may not pass in --host and
just use the SPARK_MASTER_HOST as its value.
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