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

Can you give us some more details about ssh communication between masters and the slaves?

738

Can you tell us more about ssh?

762

What is shark?

299

Name a few commonly used spark ecosystems?

303

What is hive on spark?

403

Can we do real-time processing using spark sql?

322

How sparksql is different from hql and sql?

511

What is a parquet file?

304

How to split single hdfs block into partitions rdd?

How does data transfer happen from hdfs to hive?

155

What is non-dfs used in hdfs web console

If the source data gets updated every now and then, how will you synchronize the data in hdfs that is imported by sqoop?

162

How to use hdfs put command for data transfer from flume to hdfs?

What are tools available to send the streaming data to hdfs?

how does hdfs ensure data integrity of data blocks stored in hadoop hdfs?

Un-Answered Questions { Hadoop }

What is sparkcontext in spark?

285

How do you do a file system check in hdfs?

What do you understand by the partitions in spark?

335

Difference between order by and sort by in Hive?

770

Did you ever ran into a lop sided job that resulted in out of memory error, if yes then how did you handled it ?

474

Why spark is faster than hadoop?

263

What is spark slang for?

300

Explain Spark Executor

292

Explain repository in apache ambari?

How to use hdfs put command for data transfer from flume to hdfs?

What type of data we should put in distributed cache? When to put the data in dc? How much volume we should put in?

478

Can spark be used without hadoop?

283

What are the complex datatypes in pig?

1022

What will happen in case you have not issued the command: ‘set hive.enforce.bucketing=true;’ before bucketing a table in hive in apache hive 0.x or 1.x?

824

What is hector?

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