What is Identity reducer?
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List out the different stream grouping in apache storm?
What is heartbeat in hadoop?
How does hadoop achieve fault tolerance?
What is Erasure Coding in Hadoop?
Explain how can we check whether namenode is working or not?
What is the use of cloudera?
What is difference between secondary namenode, checkpoint namenode & backupnode?
What is active and passive NameNode in Hadoop?
What are the features of Standalone (local) mode?
How to specify more than one path for storage in Hadoop?
How Hadoop’s CLASSPATH plays a vital role in starting or stopping in Hadoop daemons?
Why use hadoop?
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