Where is the Mapper Output stored?
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did you maintain the hadoop cluster in-house or used hadoop in the cloud?
Is it necessary to know java to learn hadoop?
Can Apache Kafka be used without Zookeeper?
What is the jobtracker?
What is InputSplit and RecordReader?
Can NameNode and DataNode be a commodity hardware?
What is the communication channel between client and namenode/datanode?
What is the meaning of the term "non-DFS used" in Hadoop web-console?
Which data storage components are used by hadoop?
What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?
What is the difference between HDFS and NAS ?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
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