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https://issues.apache.org/jira/browse/SPARK-29465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16952516#comment-16952516
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Vishwas Nalka commented on SPARK-29465:
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[~dongjoon], The problem is when the yarn cluster is running in a machine where
not all ports can be opened. The requirement is to restrict the ports used by
the spark job that is launched in yarn mode. I was able to set all other ports
like _"spark.driver.port", "spark.blockManager.port"_ except the UI port.
// Set the web ui port to be ephemeral for yarn so we don't conflict with//
other spark processes running on the same
boxSystem.setProperty("spark.ui.port", "0")
Can't the above code be modified to include a condition to check if the UI port
is already set by the user, if not the port should be set to random as
mentioned in the comments. Do let me know your suggestion.
Thanks!
> Unable to configure SPARK UI (spark.ui.port) in spark yarn cluster mode.
> -------------------------------------------------------------------------
>
> Key: SPARK-29465
> URL: https://issues.apache.org/jira/browse/SPARK-29465
> Project: Spark
> Issue Type: Bug
> Components: Spark Submit, YARN
> Affects Versions: 2.4.4
> Reporter: Vishwas Nalka
> Priority: Major
>
> 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/2.6.4.0-91/hadoop/lib/native:$LD_LIBRARY_PATH"
> {{JAVA_HOME}}/bin/java -server -XX:OnOutOfMemoryError='kill %p' -Xms4096m
> -Xmx4096m -Djava.io.tmpdir={{PWD}}/tmp '-Dspark.blockManager.port=9900'
> '-Dspark.driver.port=9902' '-Dspark.fileserver.port=9903'
> '-Dspark.broadcast.port=9904' '-Dspark.port.maxRetries=20'
> '-Dspark.ui.port=0' '-Dspark.executor.port=9905'_
> _19/10/14 16:39:59 INFO Utils: Successfully started service 'SparkUI' on port
> 35167.19/10/14 16:39:59 INFO SparkUI: Started SparkUI at_
> [_http://10.65.170.98:35167_|http://10.65.170.98:35167/]
> Even tried using a *spark-submit command with --conf spark.ui.port* does
> spawn UI in required port
> {color:#172b4d}_(Run in Spark 2.4.4)_{color}
> {color:#172b4d}_./bin/spark-submit --class org.apache.spark.examples.SparkPi
> --master yarn --deploy-mode cluster --driver-memory 4g --executor-memory 2g
> --executor-cores 1 --conf spark.ui.port=12345 --conf spark.driver.port=12340
> --queue default examples/jars/spark-examples_2.11-2.4.4.jar 10_{color}
> _From the logs::_
> _19/10/15 00:04:05 INFO ui.SparkUI: Stopped Spark web UI at
> [http://invrh74ace005.informatica.com:46622|http://invrh74ace005.informatica.com:46622/]_
> _command:{{JAVA_HOME}}/bin/java -server -Xmx2048m
> -Djava.io.tmpdir={{PWD}}/tmp '-Dspark.ui.port=0' 'Dspark.driver.port=12340'
> -Dspark.yarn.app.container.log.dir=<LOG_DIR> -XX:OnOutOfMemoryError='kill %p'
> org.apache.spark.executor.CoarseGrainedExecutorBackend --driver-url
> spark://coarsegrainedschedu...@invrh74ace005.informatica.com:12340
> --executor-id <executorId> --hostname <hostname> --cores 1 --app-id
> application_1570992022035_0089 --user-class-path
> [file:$PWD/__app__.jar1|file://%24pwd/__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 by the
> user.
> In these links
> #
> [https://github.com/apache/spark/blob/master/resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMaster.scala]
> (line 214)
> #
> [https://github.com/cloudera/spark/blob/master/yarn/alpha/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMaster.scala]
> (line 75)
> I can see that the method _*run() in above files sets a system property
> UI_PORT*_ and _*spark.ui.port respectively.*_
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