List out the different stream grouping in apache storm?
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What is Slot in Hadoop v1? Why was it removed from Hadoop v2?
What happens if you don?t override the mapper methods and keep them as it is?
What does rack awareness mean?
What is the relationship between Jobs and Tasks in Hadoop?
Explain how does hadoop classpath plays a vital role in stopping or starting in hadoop daemons?
Can you define a checkpoint?
Are job tracker and task trackers present in separate machines?
Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?
What happens if you get a ‘connection refused java exception’ when you type hadoop fsck /?
What happens when two clients try to access the same file in the hdfs?
What is the basic difference between traditional RDBMS and Hadoop?
Is Namenode machine same as DataNode machine as in terms of hardware?
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