How to resolve ioexception: cannot create directory, while formatting namenode in hadoop?


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More Apache Hadoop Interview Questions

What are different hdfs dfs shell commands to perform copy operation?

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did you maintain the hadoop cluster in-house or used hadoop in the cloud?

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What happens to a namenode, when job tracker is down?

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What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?

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How to configure hadoop to reuse JVM for mappers?

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What if a namenode has no data?

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What is Row Key?

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What is Writable & WritableComparable interface?

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Define a metadata?

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What is a 'block' in HDFS?

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Explain the basic difference between traditional rdbms and hadoop?

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Where do you specify the Mapper Implementation?

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