[GitHub] [incubator-uniffle] rhh777 commented on issue #154: [Improvement] Support Empty assignment to Shuffle Server

[GitBox <gi...@apache.org>]

rhh777 commented on issue #154:
URL: https://github.com/apache/incubator-uniffle/issues/154#issuecomment-1312449433

   When the RDD is Empty, the shuffle is triggered and the **Empty assignment to Shuffle Server**
   
   
   
           val conf = new SparkConf()
           conf.set("spark.shuffle.manager","org.apache.spark.shuffle.RssShuffleManager")
           conf.set("spark.rss.coordinator.quorum","localhost:19999")
           conf.set("spark.rss.storage.type","MEMORY_LOCALFILE")
   
           val session: SparkSession = SparkSession.builder().config(conf).
                   master("local").appName("rss_empty_assignment").getOrCreate()
   
           val rdd: RDD[Row] = session.emptyDataFrame.rdd
           val inputRDD: RDD[(String, Int)] = rdd.map((row: Row) => {
               ("rss_empty_assignment", 1)
           })
   
           inputRDD.countByKey().foreach(println)
           session.stop()
   


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