What stored in HDFS?
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What is Derby database?
What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?
Do we need to give a password, even if the key is added in ssh?
What is Rack Awareness in Apache Hadoop?
Explain the features of pseudo mode?
What Mapper does?
How to resolve IOException: Cannot create directory
What are the additional benefits YARN brings in to Hadoop?
How many instances of a jobtracker run on hadoop cluster?
What is commodity hardware?
What does /var/hadoop/pids do?
What is Rack awareness?