What are active and passive "NameNodes"?
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What is a speculative execution in Apache Hadoop MapReduce?
Explain the basic difference between traditional rdbms and hadoop?
What do you know about nlineoutputformat?
Is hadoop based on google mapreduce?
Can Hadoop be compared to NOSQL database like Cassandra?
Why are the number of splits equal to the number of maps?
Define a task tracker?
What is difference between split and block in hadoop?
What does /var/hadoop/pids do?
How can you overwrite the replication factors in HDFS?
How can we check whether namenode is working or not?
How does NameNode tackle DataNode failures?
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