Explain Erasure Coding in Hadoop?
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Mention what are the three modes in which hadoop can be run?
Why use hadoop?
If the hadoop administrator needs to make a change, which configuration file does he need to change?
Explain the usage of Context Object?
What is Federation?
Mention what is the data storage component used by hadoop?
Are there any special requirements for namenode?
Explain the key benefits of using storm for real time processing?
What type of data we should put in distributed cache? When to put the data in dc? How much volume we should put in?
Can you define inputsplit in hadoop?
How would you check whether your NameNode is working or not?
How would an hadoop administrator deploy various components of hadoop in production?
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