What is a block and block scanner in HDFS?
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What is Hadoop?
Explain the use of .mecia class?
What is InputSplit and RecordReader?
What is the difference between Apache Hadoop and RDBMS?
How to use Apache Zookeeper command line interface?
How many maximum jvm can run on a slave node?
What are active and passive "NameNodes"?
What is the use of Combiner?
What is formatting of the dfs?
Can NameNode and DataNode be a commodity hardware?
Which files are used by the startup and shutdown commands?
What platform and java version are required to run hadoop?
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