[SPARK-24785] Making sure REPL prints Spark UI info and then Welcome message

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.0
• Fix Version/s: 2.4.0
• Component/s: Spark Shell
• Assignee: DB Tsai
• Reporter: DB Tsai
• Created: 11/Jul/18 18:05
• Updated: 30/Aug/18 02:36
• Resolved: 22/Aug/18 23:16

Description

After SPARK-24418 the welcome message will be printed first, and then scala prompt will be shown before the Spark UI info is printed as the following.

 apache-spark git:(scala-2.11.12) ✗ ./bin/spark-shell 
Setting default log level to "WARN".
To adjust logging level use sc.setLogLevel(newLevel). For SparkR, use setLogLevel(newLevel).
Welcome to
      ____              __
     / __/__  ___ _____/ /__
    _\ \/ _ \/ _ `/ __/  '_/
   /___/ .__/\_,_/_/ /_/\_\   version 2.4.0-SNAPSHOT
      /_/
         
Using Scala version 2.11.12 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_161)
Type in expressions to have them evaluated.
Type :help for more information.

scala> Spark context Web UI available at http://192.168.1.169:4040
Spark context available as 'sc' (master = local[*], app id = local-1528180279528).
Spark session available as 'spark'.


scala> 

Although it's a minor issue, but visually, it doesn't look nice as the existing behavior.

Issue Links

• is duplicated by: SPARK-25138 Spark Shell should show the Scala prompt after initialization is complete
• links to: [Github] Pull Request #21749 (dbtsai)