Which modes can Hadoop be run in? List a few features for each mode?
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After the Map phase finishes, the Hadoop framework does 'Partitioning, Shuffle and sort'. Explain what happens in this phase?
Mention what is data cleansing?
Ideally what should be replication factor in a Hadoop cluster?
Explain how jobtracker schedules a task?
How to handle bad records during parsing?
What are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?
How Big is ‘Big Data’?
Why Hadoop performs replication, although it results in data redundancy?
Clarify what is sqoop in hadoop?
Why slaves limited to 4000 in hadoop version 1?
List of the some best tools that can be useful for data-analysis?
Define data cleansing?
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