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      Colloqui di ProwarenessColloqui per Big Data Consultant presso ProwarenessColloquio di Prowareness


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      Colloquio per Big Data Consultant

      3 mar 2017
      Candidato anonimo a colloquio
      Bengaluru
      Nessuna offerta
      Esperienza negativa
      Colloquio facile

      Candidatura

      Ho presentato la mia candidatura tramite un selezionatore. La procedura ha richiesto un giorno. Ho sostenuto un colloquio presso Prowareness (Bengaluru) nel mese di mar 2017

      Colloquio

      1 Got Call for Interview for next day. 2. Technical Discussion . Panel seemed to have fixed question of Spark, Hive and SQL Questions were mostly difference two things . Few specific single word answer questions (One answer interviewer had in mind). The approach to answer would be stopped in between and asked to answer specific question. I found few questions very negative and boundary condition or anomaly type or interviewer wanted to answer in his word only like two primary-key possible ?, which file format spark saves job ? sorting of indexing ? Approach to solution was not appreciated or stopped then and there. I gave string feedback to HR about panel. No question on map-reduce or java or spark-dataframe . Answer to my role and responsibility : Teach and up-skill the team( us and others ) on big-data.

      Domande di colloquio [1]

      Domanda 1

      Spark : 1. Difference between map and flatmap. 2. Difference between groupbykey and reducebykey 3. Which file format spark saves file ? Answer should be ".orc" files only. (It took me multiple attempts to understand the question. and ".txt", ".csv" "xml" "anyflat-file-format" is not the correct answer. LOL ) 4. Difference between coalesce and repartition. 5. some more questions on RDD Hive 1 Difference between orderby and sortby 2. Select * from . How many mapper will be created. 3. Analytical function/ What is RANK ? hdfs 1. Difference between block and split SQL 1. What is indexing on single column ? (stopped in between of my answer ) and followed by what is sorting type in index key ascending or descending. (How does it matter its primary key not composite key) 2. Can you have two primary key . (I do not thing there will need of two primary as one it self does the job.) No tell the implementation is it possible, can you define two primary key ? (No) One of the panel member got irritated and fired a few questions after saying bye and answering my question related to profile and position . (Literally like Panel one : okay bye thanks for you ... Panel: No I will ask one last question . which file format spark saves files. )
      1 risposta
      3