1.What is HTML5? HTML5 is the next major revision of the HTML standard superseding HTML 4.01, XHTML 1.0, and XHTML 1.1. HTML5 is a standard for structuring and presenting content …
41.What is a Hbase Store? A Habse Store hosts a MemStore and 0 or more StoreFiles (HFiles). A Store corresponds to a column family for a table for a given …
31.How does Hbase support Bulk data loading? There are two main steps to do a data bulk load in Hbase. Generate Hbase data file(StoreFile) using a custom mapreduce job) from …
21.What is a rowkey in Hbase? Each row in Hbase is identified by a unique byte of array called row key.
11.Is Hbase a scale out or scale up process? Hbase runs on top of Hadoop which is a distributed system. Haddop can only scale uo as and when required by …
1.What are the different commands used in Hbase operations? There are 5 atomic commands which carry out different operations by Hbase. Get, Put, Delete, Scan and Increment.
41.Can we LOAD data into a view? No. A view can not be the target of a INSERT or LOAD statement.
31.What does the following query do? INSERT OVERWRITE TABLE employees PARTITION (country, state) SELECT …, se.cnty, se.st FROM staged_employees se; It creates partition on table employees with partition values coming …
21.What is the significance of the line set hive.mapred.mode = strict; It sets the mapreduce jobs to strict mode.By which the queries on partitioned tables can not run without a …
11.What are collection data types in Hive? There are three collection data types in Hive. ARRAY MAP STRUCT
