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 does heartbeat in hdfs means?

What does hdfs mean?

Would you be able to change the block size of hdfs files?

Characterize data integrity? How does hdfs ensure information integrity of data blocks squares kept in hdfs?

Does hdfs enable a customer to peruse a record, which is already opened for writing?

What is the throughput?

How does hdfs give great throughput?

Will various customers write into an hdfs record simultaneously?

Clarify the difference between nas and hdfs.

What do you mean by meta information in hdfs?

Can we change the document present in hdfs?

What does rack awareness algorithm means and why is it utilized as a part of hadoop?

384

What does rack awareness algorithm means?

450

What does the high availability of a name-node means? How is it accomplished?

377

What does name-node mean in hadoop?

437

Un-Answered Questions { Hadoop }

What is Fault Tolerance in Hadoop HDFS?

What problem does Apache Flume solve?

How would you diagnose or do exception handling in the pig?

913

Explain reduceByKey() Spark operation?

281

How will you backup an HBase cluster?

139

How the HDFS Blocks are replicated?

902

What is the ZooKeeper ensemble?

Explain the maximum size of a message that can be received by the Kafka?

677

What do you understand by the parquet file?

261

What is the difference between apache mahout and apache spark’s mllib?

Explain tokenize?

525

Can you define serde in hive?

631

What are the side data distribution techniques?

439

Difference between hive and impala?

688

What is the default replication factor in Hadoop and how will you change it?

540

For More Un-Answered { Hadoop } Questions Click Here