What are active and passive "NameNodes"?
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What is a checkpoint?
How to resolve small file problem in hdfs?
How we can change Replication factor when Data is on the fly?
How Mapper is instantiated in a running job?
What stored in HDFS?
What is the difference between SQL and NoSQL?
Why is Apache Spark faster than Apache Hadoop?
In cloudera there is already a cluster, but if I want to form a cluster on ubuntu can we do it?
What is the default block size in hdfs?
How can you overwrite the replication factors in HDFS?
How to enable recycle bin or trash in hadoop?
Can the balancer be run while Hadoop is in use?
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