Hadoop Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Apache Hadoop (394)
MapReduce (354)
Apache Hive (345)
Apache Pig (225)

Apache Ambari (93)
Apache HCatalog (34)
Apache HDFS Hadoop Distributed File System (214)
Apache Kafka (189)

Hadoop Interview Questions

Questions Answers Views Company eMail

What are the usage of different consistency levels for write operations ?

What are the consistency levels for write operations in Cassandra?

101

Who was the original author of Cassandra?

What are the different CQL data manipulation commands in Cassandra?

123

What is the use of tracing cqlsh command in Cassandra?

Which query language is used in Cassandra database?

106

Does Cassandra work on Windows?

What is Hector in Cassandra?

104

Which command is used to start the cqlsh prompt?

269

What is the use of Bloom Filter in Cassandra?

127

Give some important features of SPM?

101

What is prepare() method in Cassandra?

What is Cassandra?

100

What are the differences between a node, a cluster, and datacenter in Cassandra?

Describe SPM?

Un-Answered Questions { Hadoop }

How do ‘map’ and ‘reduce’ work?

708

Why is spark used?

281

What square measure the options of apache mahout?

When does queuefullexception occur?

690

Can spark be used without hadoop?

283

Explain some Disadvantages of Avro?

Define composite key?

What is difference between a MapReduce InputSplit and HDFS block

727

What are some of the apache pig use cases you can think of?

538

What advantages does Spark offer over Hadoop MapReduce?

317

What are use cases of Apache Flume?

How to configure the number of the Combiner in MapReduce?

668

Did you ever ran into a lop sided job that resulted in out of memory error

1280

How do you process big data with spark?

301

Explain about transformations and actions in the context of RDDs.

363

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