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From "Vishwas Nalka (Jira)" <>
Subject [jira] [Created] (SPARK-29465) Unable to configure SPARK UI (spark.ui.port) in spark yarn cluster mode.
Date Mon, 14 Oct 2019 19:00:00 GMT
Vishwas Nalka created SPARK-29465:

             Summary: Unable to configure SPARK UI (spark.ui.port) in spark yarn cluster mode.

                 Key: SPARK-29465
             Project: Spark
          Issue Type: Bug
          Components: Spark Submit, YARN
    Affects Versions: 2.4.4, 1.6.2
            Reporter: Vishwas Nalka

 I'm trying to restrict the ports used by spark app which is launched in yarn cluster mode.
All ports (viz. driver, executor, blockmanager) could be specified using the respective properties
except the ui port. The spark app is launched using JAVA code and setting the property spark.ui.port
in sparkConf doesn't seem to help. Even setting a JVM option -Dspark.ui.port="some_port" does
not spawn the UI is required port. 

>From the logs of the spark app, *_the property spark.ui.port is overridden and the JVM
property '-Dspark.ui.port=0' is set_* even though it is never set to 0. 

_(Run in Spark 1.6.2) From the logs ->_

_command:LD_LIBRARY_PATH="/usr/hdp/$LD_LIBRARY_PATH" \{{JAVA_HOME}}/bin/java
-server -XX:OnOutOfMemoryError='kill %p' -Xms4096m -Xmx4096m\{{PWD}}/tmp
'-Dspark.blockManager.port=9900' '-Dspark.driver.port=9902' '-Dspark.fileserver.port=9903'
'-Dspark.broadcast.port=9904' '-Dspark.port.maxRetries=20' '-Dspark.ui.port=0' '-Dspark.executor.port=9905'_

_19/10/14 16:39:59 INFO Utils: Successfully started service 'SparkUI' on port 35167.19/10/14
16:39:59 INFO SparkUI: Started SparkUI at_ [_http://|]

Even tried using a *spark-submit command with --conf spark.ui.port* does spawn UI in required

{color:#172b4d}_(Run in Spark 2.4.4)_{color}
{color:#172b4d}_./bin/spark-submit --class org.apache.spark.examples.SparkPi --master yarn
--deploy-mode cluster --driver-memory 4g --executor-memory 2g --executor-cores 1 --conf spark.ui.port=12345
--conf spark.driver.port=12340 --queue default examples/jars/spark-examples_2.11-2.4.4.jar

_From the logs::_
_19/10/15 00:04:05 INFO ui.SparkUI: Stopped Spark web UI at [|]_

_command:\{{JAVA_HOME}}/bin/java -server -Xmx2048m\{{PWD}}/tmp '-Dspark.ui.port=0' 
'Dspark.driver.port=12340'<LOG_DIR> -XX:OnOutOfMemoryError='kill
%p' org.apache.spark.executor.CoarseGrainedExecutorBackend --driver-url spark://
--executor-id <executorId> --hostname <hostname> --cores 1 --app-id application_1570992022035_0089
--user-class-path file:$PWD/__app__.jar1><LOG_DIR>/stdout2><LOG_DIR>/stderr_


Looks like the application master override this and set a JVM property before launch resulting
in random UI port even though spark.ui.port is set.


In these links
 # []
(line 214)
 # []
(line 75)

I can see that the method _*run() in above files sets a system property UI_PORT*_ and _*spark.ui.port

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