10 top interview questions asked in recent interviews. We collected these questions from the candidates who gave interviews. Look at Sqoop tutorial before you move further.
- The first and best function of Sqoop?
- Sqoop can import individual tables or entire databases into HDFS. The data is stored in the native directories and files in the HDFS file system.
- What is export in Sqoop?
- Sqoop can export data directly from HDFS into a relational database using a target table definition based on the specifics of the target database.
- Why Sqoop uses mapreduce in import/export operations?
- Sqoop uses MapReduce to import and export the data, which provides parallel operation as well as fault tolerance.
- What does it mean non-Hadoop data?
- It is one of the most popular Big Data tools that leverages the competency to haul out data from a non-Hadoop data store by transforming information into a form that can be easily accessed and used by Big Data Hadoop
- What are the underlying technologies in Sqoop?
- It has a high degree of dependence on underlying technologies like HDFS and MapReduce.
- What is the data loading or import in Sqoop?
- Load directly into Hive tables, creating HDFS files in the background and the Hive metadata automatically
- Sqoop imports data into three kinds of data storage what are those?
- Hive Tables
- HDFS files
- Hbase (HBase is an open-source, distributed, versioned, non-relational database modeled after Google’s Bigtable)
- The nine functions of Sqoop?
- Full Load
- Incremental Load
- Parallel import/export
- Import results of SQL query
- Compression
- Connectors for all major RDBMS Databases
- Kerberos Security Integration
- Load data directly into Hive/Hbase
- Support for Accumulo
- Where Sqoop come into picture in Hadoop eco system?
- Sqoop comes into picture. Sqoop acts like a intermediate layer between Hadoop and relational database systems
- Whether Sqoop will do aggregations?
- Sqoop just imports and exports the data; it does not do any aggregations.
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