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 is Distributed Cache?

857

what is difference between pig and sql?

2568

What problem does Apache Pig solve?

752

if you run Hive as a server?

871

What problems have you faced when you are working on Hadoop code?

927

What is HDFS - Hadoop Distributed File System?

920

Are multiline comments supported in Hive?

3241

How does MapReduce framework view its input internally?

839

What is the stable version of Hive ?

2594

What are the most commonly defined input formats in Hadoop?

1022

What does /var/hadoop/pids do?

1220

What is the use of Combiner?

937

What is Hive ?

960

what is SPF?

1473

what are Task Tracker and Job Tracker?

1007

Un-Answered Questions { Hadoop }

What is difference between hadoop and spark?

289

How client application interacts with the NameNode?

916

What is SparkContext in Apache Spark?

297

What is Interceptor?

104

Is a log flume a roller coaster?

Explain Erasure Coding in Hadoop?

475

Define the difference between hive and hbase?

166

While loading data into a hive table using the load data clause, how do you specify it is a hdfs file and not a local file ?

694

What is apache spark and what is it used for?

316

What is spark master?

322

What is the difference between Hiveserver1 and Hiveserver2?

747

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

581

Explain the Scope operators used in hbase?

178

Can rdd be shared between sparkcontexts?

274

What is spark good for?

320

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