March 2016

41. Define catalog tables in Hbase? Catalog tables are used to maintain the metadata information.

31. What is REST? Rest stands for Representational State Transfer which defines the semantics so that the protocol can be used in a generic way to address remote resources. It …

21. What is use of tools command? This command is used to list the hbase surgery tools.

11. What is the full form of YCSB? YCSB stands for Yahoo! Cloud Serving Benchmark.

1. What is Apache HBase? It is a column oriented database which is used to store the sparse data sets. It is run on the top of Hadoop file distributed …

21.List the functions of Spark SQL. Spark SQL is capable of: • Loading data from a variety of structured sources • Querying data using SQL statements, both inside a Spark …

11.What is Spark Driver? Spark Driver is the program that runs on the master node of the machine and declares transformations and actions on data RDDs. In simple terms, driver …

1.What is Apache Spark? Spark is a fast, easy-to-use and flexible data processing framework. It has an advanced execution engine supporting cyclic data  flow and in-memory computing. Spark can run …

21.What are some of the main fields in SQLCA? Major Fields in SQLCA is SQL CODE, SQLERRM, and SQLERRD.

11.When the LIKE statement is used? LIKE statement is used to conduct partial searches like the search of employees by name. It is not necessary to indicate the complete name, …