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https://issues.apache.org/jira/browse/SPARK-29465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16951581#comment-16951581
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Sandeep Katta commented on SPARK-29465:
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I see as per the comments in the [code
|https://github.com/apache/spark/blob/master/resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMaster.scala#L212]
behavior is correct. User can submit more spark applications in the same box.
ping [~hyukjin.kwon] [~dongjoon] what's your suggesstion
> 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: 1.6.2, 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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