Who is intended audience to learn HCatalog?

5

Is impala intended to handle real time queries in low-latency applications or is it for ad hoc queries for the purpose of data exploration?

43

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

184

If datanodes increase, then do we need to upgrade namenode?

464

Explain when to use explode in Hive?

703

What is hfile ?

291

Why replication is required in Kafka?

508

How does bloom filter help in searching rows?

219

What is spark etl?

296

What is the difference between apache mahout and prediction.io ?

47

What happens if the quantity of the reducer is 0 in mapreduce?

594

why should we use 'group' keyword in pig scripts?

559

What are accumulators in spark?

311

What are the different operational commands in HBase at record level and table level?

361

Explain the Differences between Hive and Spark SQL?

716