Sqoop Interview Questions and Answers
Experienced / Expert level questions & answers
Ques 1. Explain the purpose of the --direct option in Sqoop.
The --direct option enables direct export or import between Hadoop and the database without using HDFS as an intermediary.
Ques 2. Explain the purpose of the --direct-split-size option in Sqoop.
The --direct-split-size option is used to specify the number of bytes per split when using direct mode for imports and exports.
Example:
sqoop import --connect jdbc:mysql://localhost:3306/db --table mytable --direct --direct-split-size 1000000
Ques 3. What is the purpose of the --direct-import option in Sqoop?
The --direct-import option is used to import data directly into the database without using HDFS as an intermediate storage.
Ques 4. What is the purpose of the --validate option in Sqoop?
The --validate option is used to perform data validation during import by comparing the source and target data counts.
Example:
sqoop import --connect jdbc:mysql://localhost:3306/db --table mytable --validate
Ques 5. Explain the purpose of the --direct-split-size option in Sqoop.
The --direct-split-size option is used to specify the number of bytes per split when using direct mode for imports and exports.
Example:
sqoop import --connect jdbc:mysql://localhost:3306/db --table mytable --direct --direct-split-size 1000000
Ques 6. What is the purpose of the --direct-split-size option in Sqoop?
The --direct-split-size option is used to specify the number of bytes per split when using direct mode for imports and exports.
Example:
sqoop import --connect jdbc:mysql://localhost:3306/db --table mytable --direct --direct-split-size 1000000
Ques 7. Explain the purpose of the --autoreset-to-one-mapper option in Sqoop.
The --autoreset-to-one-mapper option automatically resets the number of mappers to one if the initial split size is larger than the total number of rows in the table.
Example:
sqoop import --connect jdbc:mysql://localhost:3306/db --table mytable --autoreset-to-one-mapper
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