Hadoop Sqoop Functions

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Sqoop Import: This Command is use to transfer data from MySQL to hdfs.

Hadoop Sqoop Video Tutorials

Sqoop import all: This command is used to import all tables present in the selected database.

Import only subset of data: In this, we import data with particular Parameters

Importing New Data: Used to import the new data inserted into the particular table

Incrementally importing Mutable data  : Used to import data with timestamp value

sqoop import –connect jdbc:mysql://mysql.example.com/sqoop –username root -P –table emp –incremental lastmodified –check-column last_update_date –last-value “2019-01-29 23:52:11”

Data Validation: Used to validate data in the table.

sqoop import –connect jdbc:mysql://localhost/retail_db   –table customers   –username root  -P –validate  –verbose  –target-dir /

Case 1: No data loss or change during transfer of Data

Case 2: Data loss during transfer.

Sqoop Job: This command is to create a job with a particular function and can be again and again without writing the whole command.

Sqoop eval: To find out the change in the table.