how to share the metastore within multiple users?
How do you define "block" in HDFS?
Where is the Mapper Output intermediate kay-value data stored ?
What is Distributed Cache?
What problems have you faced when you are working on Hadoop code?
What is HDFS - Hadoop Distributed File System?
What are the most commonly defined input formats in Hadoop?
What does /var/hadoop/pids do?
What is the use of Combiner?
what is SPF?
what are Task Tracker and Job Tracker?
On what basis name node distribute blocks across the data nodes?
Name some companies that use Hadoop?
Rack awareness of Namenode?
Have you ever used Counters in Hadoop. Give us an example scenario?