What is High Availability feature in Hadoop2?
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What happens if you get a ‘connection refused java exception’ when you type hadoop fsck /?
How to create a user in Hadoop?
Compare Hadoop 2 and Hadoop 3?
What are the restriction to the key and value class ?
What is purpose of RecordWriter in Hadoop?
What is the difference between TextInputFormat and KeyValueInputFormat class?
Explain what is storage and compute nodes?
What is the use of context object?
What is data cleansing?
How to debug Hadoop code?
What does the file hadoop-metrics.properties do?
What do you know about the speculative execution?
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