What stored in HDFS?
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How can you overwrite the replication factors in HDFS?
What is the difference between Hadoop and Traditional RDBMS?
Can hbase run without hadoop?
How is the option in Hadoop to skip the bad records?
What are the basic available commands in Hadoop sqoop ?
What is the jobtracker and what it performs in a hadoop cluster?
Did you ever built a production process in hadoop ? If yes then what was the process when your hadoop job fails due to any reason?
Is a job split into maps?
What is Disk Balancer in Apache Hadoop?
What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
What is zookeeper in hadoop?
did you maintain the hadoop cluster in-house or used hadoop in the cloud?
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