Re: groupby question

2022-05-05 Thread wilson
don't know what you were trying to express. it's better if you can give the sample dataset and the purpose you want to achieve, then we may give the right solution. Thanks Irene Markelic wrote: I have and rdd that I want to group according to some key, but it just doesn't work. I am a Scala

groupby question

2022-05-05 Thread Irene Markelic
Hi everybody, I have and rdd that I want to group according to some key, but it just doesn't work. I am a Scala beginner. So I have the following RDD: langs: List[String] rdd: RDD[WikipediaArticle]) val meinVal = rdd.flatMap(article=>langs.map(lang=>{if (article.mentionsLanguage(lang){

groupBy question

2014-06-10 Thread SK
[1].max)), but got an error for that as well. What is the right way to get the max of the timestamp field (the first field in the ArrayBuffer) for each group? thanks. -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/groupBy-question-tp7357.html Sent from