What do you mean by taskinstance?
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Explain the Job OutputFormat?
What is Schema on Read and Schema on Write?
Explain the difference between NameNode
Is hadoop open source?
What are the basic available commands in Hadoop sqoop ?
Explain what is the purpose of RecordReader in Hadoop?
If a data Node is full how it's identified?
How to come out of the insert mode?
What do you know about nlineoutputformat?
What is the heartbeat used for?
What's the best way to copy files between HDFS clusters?
What is the purpose of RawComparator interface?
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