What happens in a textinputformat?
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Does the hdfs client decide the input split or namenode?
Are Namenode and job tracker on the same host?
How the HDFS Blocks are replicated?
Did you ever ran into a lop sided job that resulted in out of memory error
What is a “Distributed Cache” in Apache Hadoop?
What is version-id mismatch error in hadoop?
What is the full form of fsck?
What are different hdfs dfs shell commands to perform copy operation?
How does a namenode handle the failure of the data nodes?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
What is compute and Storage nodes?
How do you define "block" in HDFS?