How many instances of tasktracker run on a hadoop cluster?
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Rack awareness of Namenode?
What platform and java version are required to run hadoop?
What is the difference between hadoop and other data processing tools?
What is HDFS Block size? How is it different from traditional file system block size?
How to change from su to cloudera?
What are the different types of Znodes?
What is the purpose of DataNode block scanner?
What is Apache Hadoop? Why is Hadoop essential for every Big Data application?
In which location Name Node stores its Metadata and why?
Explain the overview of hadoop history breifly?
Which are the three main hdfs-site.xml properties?
How to write a Custom Key Class?
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