Importing Incremental Data
You can also perform incremental imports using Sqoop. Incremental import is a technique that imports only the newly added rows in a table. It is required to add incremental , check-column , and last-value options to perform the incremental import.
incremental - Used by Sqoop to determine which rows are new. Legal values for this mode include append and lastmodified .
check-column - To provide the column that needs to checked the determine the candidate rows.
last-value - This is the maximum value of the last import run.
Example:
sqoop import
--connect jdbc:mysql://localhost:3306/kalyan
--username root
--table sample
-m 1
--incremental append
--check-column id
--last-value 1000
You can also perform incremental imports using Sqoop. Incremental import is a technique that imports only the newly added rows in a table. It is required to add incremental , check-column , and last-value options to perform the incremental import.
incremental - Used by Sqoop to determine which rows are new. Legal values for this mode include append and lastmodified .
check-column - To provide the column that needs to checked the determine the candidate rows.
last-value - This is the maximum value of the last import run.
Example:
sqoop import
--connect jdbc:mysql://localhost:3306/kalyan
--username root
--table sample
-m 1
--incremental append
--check-column id
--last-value 1000
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