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Hadoop Interview Questions
Questions Answers Views Company eMail

What is a flume agent?

61

How do I start flume in hadoop?

83

What is spooldir flume?

92

What is flume instagram?

86

What is flume and sqoop?

107

Why is flume used?

76

How does a log flume work?

88

What kind of music is flume?

94

How much does flume cost?

81

What is “serde” in “hive”?

761

Explain about the smb join in hive?

771

Compare hadoop & spark?

288

What are ‘reduces’?

772

Explain how do ‘map’ and ‘reduce’ work?

648

How do ‘map’ and ‘reduce’ work?

707


Un-Answered Questions { Hadoop }

what are the different modes of Hive?

744


What are different Hive commands available for hive and beeline CLI?

764


What is bloom filter?

88


What is wal and hlog in hbase?

317


How tasks are created in spark?

299


How to create hadoop archive?

457


What is the basic difference between traditional RDBMS and Hadoop?

482


What is hadoop? Name the main components of a hadoop application?

476


Why do I have to use refresh and invalidate metadata, what do they do?

62


Tell something about the query language used in Cassandra Database?

76


Can we run spark on windows?

293


What is a block in HDFS? what is the default size in Hadoop 1 and Hadoop 2? Can we change the block size?

72


How do you process big data with spark?

301


What is flume interceptor?

93


What is the difference between python and spark?

293