What is Writable & WritableComparable interface?
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Is a job split into maps?
Name the various types of lists supported by bootstrap.
what is SPF?
What is a heartbeat in HDFS?
Define tasktracker.
Explain Erasure Coding in Apache Hadoop?
What is 'Key value pair' in HDFS?
What does /var/hadoop/pids do?
What are combiners and its purpose?
On what basis name node distribute blocks across the data nodes?
Can hbase run without hadoop?
How can we check whether namenode is working or not?
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