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More Apache Hadoop Interview Questions

What is version-id mismatch error in hadoop?

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What is the difference between rdbms and hadoop?

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What do shuffling do?

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Is it necessary to know java to learn hadoop?

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Is hadoop the future?

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What happens to job tracker when namenode is down?

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What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?

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What does /etc /init.d do?

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What are the two main parts of the hadoop framework?

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