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What are active and passive "NameNodes"?


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More Apache Hadoop Interview Questions

What is a speculative execution in Apache Hadoop MapReduce?

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Explain the basic difference between traditional rdbms and hadoop?

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What do you know about nlineoutputformat?

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Is hadoop based on google mapreduce?

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Can Hadoop be compared to NOSQL database like Cassandra?

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Why are the number of splits equal to the number of maps?

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Define a task tracker?

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What is difference between split and block in hadoop?

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What does /var/hadoop/pids do?

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How can you overwrite the replication factors in HDFS?

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How can we check whether namenode is working or not?

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How does NameNode tackle DataNode failures?

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