How to handle bad records during parsing?

310

What is hadoop? Name the main components of a hadoop application?

316

What happens if you get a ‘connection refused java exception’ when you type hadoop fsck /?

310

Mention how hadoop is different from other data processing tools?

304

Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?

350

Explain how can you check whether namenode is working beside using the jps command?

317

Can you explain record reader?

298

How to use combiner in hadoop ?

298

Can you give some examples of Big Data?

332

Give me examples of unstructured data?

308

Mention how many inputsplits is made by a hadoop framework?

426

When should be hadoop archive create?

314

Which modes can Hadoop be run in? List a few features for each mode?

345

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

327

What are the features of Fully-Distributed mode?

308