This extends Apache Hive basics interview questions & answers. Q76. What are the 3 key considerations in processing data in HDFS compared to traditional RDBMS or EDW (i.e. Enterprise Data…
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Home › Java & Big Data Interview Q&As › ➡ Java interview › 300+ Big Data Interview FAQs › Archive for Big Data – 06: Hive
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10 Apache Hive scenarios interview Q&As on backup, repair, partition, drop, etc
Q01: How do you back up an external with Data? A01 You can use CTAS (i.e. CREATE TABLE AS SELECT ) statement as shown below.
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hive> CREATE TABLE mydb.my_table_20211117 AS SELECT * FROM mydb. |
13: Q98 – Q104 Apache Hive Basics Interview questions & answers
Q98. What is Hive?
A98. Hive is used for accessing and analyzing data in Hadoop using SQL syntax. It is known as the HiveQL.
Q99. What is the difference between Hive internal tables & external tables?
A99. When you drop an internal table, it drops the data, and it also drops the schema (i.e…
Apache Hive for Slowly Changing Dimension (i.e. SCD) interview Q&As
Q1. What is a Slowly Changing Dimension (i.e. SCD)? A1. SCD means the dimensions that change slowly over time, rather than changing on regular basis. For example, change in customer…
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Q01 – Q07 Scenarios Based Hive Interview Q&As
Q1. Given you have a Hive table partitioned by ship_type where the ship_type can be DIRECT or PICK_UP. The last job run to populate the DIRECT shipment data for the…
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Q08- Q12 Scenarios Based Hive Query Language (i.e. HQL) Interview Q&As
This extends Q01 – Q07 Scenarios Based Hive Query Language (i.e. HQL) Interview Q&As. Q08. When you have a requirement to replicate all the data from a particular source table…
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Hope this detailed Q&As approach will help you open more doors without feeling stagnated, earn more, attend more interviews & choose from 2-6 job offers. Even you can go contracting or freelancing or change jobs every 2-3 years to expand your horizons. Nobody knows everything, but quality of answers to some of the key & frequently asked Java & Big Data interview questions will go a long way in getting multiple job offers. I often chose from 4-6 offers. It pays to prepare.
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