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how can you check whether Namenode is working beside using the jps command?


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More MapReduce Interview Questions

Explain the features of Apache Spark because of which it is superior to Apache MapReduce?

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What is difference between a MapReduce InputSplit and HDFS block

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Why Mapper runs in heavy weight process and not in a thread in MapReduce?

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what is NameNode in Hadoop?

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How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?

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What is the next step after Mapper or MapTask?

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What is identity mapper and identity reducer?

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When Namenode is down what happens to job tracker?

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what daemons run on a master node and slave nodes?

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In MapReduce Data Flow, when Combiner is called?

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What does a split do?

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What combiners are and when you should use a combiner in a mapreduce job?

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