What is your favourite tool in the hadoop ecosystem?
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What is the InputFormat ?
What stored in HDFS?
How to exit the vi editor?
Define a combiner?
What is HDFS Block size? How is it different from traditional file system block size?
What is Rack awareness?
What is the main purpose of HDFS fsck command?
What is version-id mismatch error in hadoop?
Explain the difference between gen1 and gen2 hadoop with regards to the namenode?
How to change from su to cloudera?
How to resolve ioexception: cannot create directory, while formatting namenode in hadoop?
What is MapFile?
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