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https://issues.apache.org/jira/browse/SPARK-32735?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Takeshi Yamamuro updated SPARK-32735:
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Labels: (was: pull-request-available)
> RDD actions in DStream.transfrom don't show at batch page
> ---------------------------------------------------------
>
> Key: SPARK-32735
> URL: https://issues.apache.org/jira/browse/SPARK-32735
> Project: Spark
> Issue Type: Bug
> Components: DStreams, Web UI
> Affects Versions: 3.0.0
> Reporter: Liechuan Ou
> Priority: Major
>
> h4. Issue
> {code:java}
> val lines = ssc.socketTextStream("localhost", 9999)
> val words = lines.flatMap(_.split(" "))
> val mappedStream= words.transform(rdd => {
> val c = rdd.count();
> rdd.map(x => s"$c x")}
> )
> mappedStream.foreachRDD(rdd => rdd.foreach(x => println(x))){code}
> Every batch two spark jobs are created. Only the second one is associated
> with the streaming output operation and shows at batch page.
> h4. Investigation
> The first action rdd.count() is invoked by JobGenerator.generateJobs. Batch
> time and output op id are not available in spark context because they are set
> in JobScheduler later.
> h4. Proposal
> delegate dstream.getOrCompute to JobScheduler so that all rdd actions can run
> in spark context with correct local properties.
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