Gwen Shapira created SQOOP-1569:
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Summary: SQOOP2: Preserve old job/link configuration when
upgrading connectors
Key: SQOOP-1569
URL: https://issues.apache.org/jira/browse/SQOOP-1569
Project: Sqoop
Issue Type: Improvement
Reporter: Gwen Shapira
Right now the connector upgrade code can overwrite the existing configuration
of jobs/links.
This can lead to behavior that is surprising to users (you don't necessarily
think of backing up the repository when dumping a new connector jar) and
difficult to debug.
I suggest automatically storing (and time-stamping) the previous versions.
This should be completely transparent to the upgrade code and also to anyone
accessing the configurations (they should always just get the latest version).
The design I have in mind is of slowly changing dimension. Types 2, 4 or 6 will
work. Possibly with a view to hide the new behavior from the rest of the
code-base.
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