How to restart NameNode or all the daemons in Hadoop?

542

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What does jps command do in Hadoop?

651

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What is fsck?

642

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How to debug Hadoop code?

533

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Explain Hadoop streaming?

476

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What does hadoop-metrics.properties file do?

529

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How Hadoop’s CLASSPATH plays a vital role in starting or stopping in Hadoop daemons?

422

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What are the different commands used to startup and shutdown Hadoop daemons?

527

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What is configured in /etc/hosts and what is its role in setting Hadoop cluster?

525

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How is the splitting of file invoked in Hadoop framework?

513

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Is it possible to provide multiple input to Hadoop? If yes then how?

502

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Is it possible to have hadoop job output in multiple directories? If yes, how?

452

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What is the default replication factor and how will you change it?

533

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Explain Hadoop Archives?

535

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Explain the Single point of Failure in Hadoop?

477

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