[jira] [Created] (SQOOP-2135) Sqoop2: Add direction to the uniqueness that is verified for config names

["Jarek Jarcec Cecho (JIRA)" <ji...@apache.org>]

Jarek Jarcec Cecho created SQOOP-2135:
-----------------------------------------

             Summary: Sqoop2: Add direction to the uniqueness that is verified for config names
                 Key: SQOOP-2135
                 URL: https://issues.apache.org/jira/browse/SQOOP-2135
             Project: Sqoop
          Issue Type: Bug
    Affects Versions: 1.99.5
            Reporter: Jarek Jarcec Cecho
             Fix For: 1.99.6


As part of From/To changes in 1.99.4, we've added [constraint in our repository|https://github.com/apache/sqoop/blob/sqoop2/repository/repository-derby/src/main/java/org/apache/sqoop/repository/derby/DerbySchemaUpgradeQuery.java#L489] that combination of config name, type and configurable needs to be unique (where type is either job or link).

As we are having different configuration objects for both FROM and TO directions and the direction specification is not part of the unique key, it means that one can't have the same input name for both direction. For example instead of:

{code}
class FromConfig {
 String table;
}

class ToConfig {
 String table;
}
{code}

We have to rename the variables to be unique:

{code}
class FromConfig {
 String fromTable;
}

class ToConfig {
 String toTable;
}
{code}

This is troublesome because:

* We're requesting uniqueness across different classes.
* We have to rename variables to a longer then necessary names.
* This limitation is not checked by java as it's verified in repository (e.g. no compilation errors, only runtime checks).

Hence I would suggest to allow that back :)



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