Explain first() operation in Apache Spark?

217

what needs to be taken care while adding a Column?

81

What are the three types of tombstone markers in hbase?

113

What are the different types of UDF's in Java supported by Apache Pig?

611

What are the features of Standalone (local) mode?

312

What is the default value of map and reduce max attempts?

655

What is the primary purpose of flume in the hadoop architecture?

853

How to create table in hbase?

110

Name some internal daemons used in spark?

231

Explain cassandra data model?

56

Compare HBase vs RDBMS?

115

Can aluminum cause a spark?

212

Explain how do you overwrite replication factor?

240

Explain what is kafka?

302

What is the need of MapReduce in Hadoop?

370