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From "Andrus Adamchik (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CAY-2043) ServerRuntimeBuilder: use DataDomain name for the default DataNode
Date Mon, 28 Dec 2015 14:27:49 GMT
Andrus Adamchik created CAY-2043:
------------------------------------

             Summary: ServerRuntimeBuilder: use DataDomain name for the default DataNode
                 Key: CAY-2043
                 URL: https://issues.apache.org/jira/browse/CAY-2043
             Project: Cayenne
          Issue Type: Improvement
    Affects Versions: 4.0.M2
            Reporter: Andrus Adamchik
            Assignee: Andrus Adamchik
            Priority: Minor


When a DataNode is created implicitly by ServerRuntimeBuilder, it is assigned a hardcoded
name of "cayenne". Turned out this can be a problem sometimes. 

E.g. in LinkMove (a data copy framework at https://github.com/nhl/link-move) a separate Cayenne
stack is used for each RDBMS source, and then one extra stack is used for the data target.
If we are using default configs for both source and target, source stack binds its Transaction
to the processing thread, and then source connections leak into target operations because
the corresponding DataNode names match. There are probably other ways to fix it (LinkMove
should split producer and consumer into separate threads), but still a good idea to not hardcode
the DataNode name.





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