dongjoon-hyun opened a new pull request #26113: [SPARK-29466][WEBUI] Show `Duration` for running drivers in Standalone master web UI URL: https://github.com/apache/spark/pull/26113 ### What changes were proposed in this pull request? This PR aims to add a new column `Duration` for running drivers in Apache Spark `Standalone` master web UI. ### Why are the changes needed? When we use `--supervise`, the `Duration` column is not the same. ### Does this PR introduce any user-facing change? Yes. The red box is added newly. <img width="1312" alt="Screen Shot 2019-10-14 at 12 53 43 PM" src="https://user-images.githubusercontent.com/9700541/66779127-50301b80-ee82-11e9-853f-72222cd011ac.png";> ### How was this patch tested? Manual since this is a UI column. ``` $ sbin/start-master.sh $ sbin/start-slave.sh spark://$(hostname):7077 $ bin/spark-submit --master spark://(hostname):7077 --deploy-mode cluster --supervise --class org.apache.spark.examples.JavaSparkPi examples/target/scala-2.12/jars/spark-examples_2.12-3.0.0-SNAPSHOT.jar 1000 $ jps 41521 DriverWrapper ... $ kill -9 41521 // kill the `DriverWrapper`. ```
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