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

Hadoop Interview Questions

Questions Answers Views Company eMail

State some disadvantages of impala?

What is impala data types?

What are impala architecture components?

State some impala hadoop benefits?

How apache impala works with cdh?

What are the names of daemons in impala?

How to call impala built-in functions?

What are the best features of impala?

Compare hive, hbase, and impala?

What are impala built-in functions?

Does impala support generic jdbc?

How to control access to data in impala?

Mention the best features of Apache Sqoop?

What is Sqoop?

What is the Use of Sqoop?

Un-Answered Questions { Hadoop }

Explain distnct(),union(),intersection() and substract() transformation in Spark?

327

Does impala support generic jdbc?

What is shuffle in spark?

405

Define consistency?

131

State the difference between persist() and cache() functions.

319

How does Cassandra delete data?

Which is the reliable channel in Flume to ensure that there is no data loss?

133

What is the maximum recommended cell size?

174

What is pig statistics?

527

Can there be no Reducer?

840

What is the difference between DAG and Lineage?

1620

Why do we need a password-less ssh in fully distributed environment?

709

What are the bookkeeper elements and concepts?

Can multiple clients write into an HDFS file concurrently in hadoop?

What are the features of RDD, that makes RDD an important abstraction of Spark?

280

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