Big Data Interview Questions
Questions Answers Views Company eMail

what is JobTracker in Hadoop? What are the actions followed by Hadoop?

81

Is it possible to split 100 lines of input as a single split in MapReduce?

75

What is the fundamental difference between a MapReduce Split and a HDFS block?scale data processing?

114




Is it possible to rename the output file?

65

how JobTracker schedules a task ?

69

what is NameNode in Hadoop?

81

what does the conf.setMapper Class do ?

74

how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?

68

What is SequenceFileInputFormat?

81

What is a "map" in Hadoop?

71

What is a "reducer" in Hadoop?

82

what is Speculative Execution?

68

Explain JobConf in MapReduce.

75

What is OutputCommitter?

75

How is reporting controlled in hadoop?

68







Un-Answered Questions { Big Data }

What is the difference between Hadoop and Traditional RDBMS?

193


What is a partition in Hive?

89


On what basis Namenode will decide which datanode to write on?

425


how JobTracker schedules a task ?

69


Can Apache Kafka be used without Zookeeper?

215






Do you need to install Spark on all nodes of Yarn cluster while running Spark on Yarn?

116


Define Spark Streaming.

56


How can I install Cloudera VM in my system?

204


Are Namenode and job tracker on the same host?

588


What is compute and Storage nodes?

195


What problem does Apache Flume solve?

5


Are multiline comments supported in Hive?

278


Explain InputFormat?

168


What are the different types of tombstone markers in HBase for deletion?

457


What are the two main components of ResourceManager?

201