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

How many operational commands in hbase?

164

why use hcolumndescriptor class?

146

What is the row key?

153

Tell me about the types of hbase operations?

171

How does hbase actually delete a row?

188

Name the filter which accepts the page size as the parameter in hbase?

179

Explain why to use hbase?

154

Mention the difference between hbase and relational database?

157

Mention what are the three types of tombstone markers in hbase?

219

Mention what are the key components of hbase?

165

Explain what is the row key?

146

Can the region server will be located on all datanodes?

316

What is the meaning of compaction in hbase?

156

Discuss how you can use filters in apache hbase

158

Explain jmx concerning hbse

168

Un-Answered Questions { Hadoop }

Tell me about the execution modes of Apache Pig?

509

Can I use impala to query data already loaded into hive and hbase?

what is Zookeeper in Kafka? Can we use Kafka without Zookeeper?

516

What is the default spark executor memory?

254

What is spark executor cores?

272

What is Apache HBase?

259

How to setup the local repository manually?

What is rdd in spark with example?

263

Explain the Parquet File format in Apache Spark. When is it the best to choose this?

330

What does a 'MapReduce Partitioner' do?

636

Explain about the basic parameters of mapper and reducer function

1006

How can you add a new partition for the month December in the above partitioned table?

634

How to write MapReduce Programs?

650

How can you manually partition the rdd?

273

What is the key difference between NameNode and DataNode in Hadoop?

449

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