Markus Kemper created SQOOP-3183:
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Summary: Sqoop1 (doc import + --incremental lastmodified) does not
cover the --merge-key option
Key: SQOOP-3183
URL: https://issues.apache.org/jira/browse/SQOOP-3183
Project: Sqoop
Issue Type: Bug
Reporter: Markus Kemper
Sqoop1 (doc import + --incremental lastmodified) does not cover the --merge-key
option
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https://sqoop.apache.org/docs/1.4.6/SqoopUserGuide.html#_incremental_imports
7.2.10. Incremental Imports
Table 5. Incremental import arguments:
Sqoop supports two types of incremental imports: append and lastmodified. You
can use the --incremental argument to specify the type of incremental import to
perform.
--check-column (col)
--incremental (mode)
--last-value (value)
An alternate table update strategy supported by Sqoop is called lastmodified
mode. You should use this when rows of the source table may be updated, and
each such update will set the value of a last-modified column to the current
timestamp. Rows where the check column holds a timestamp more recent than the
timestamp specified with --last-value are imported.
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