[jira] [Created] (ACCUMULO-2497) InstanceFactory

["Bill Havanki (JIRA)" <ji...@apache.org>]

Bill Havanki created ACCUMULO-2497:
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             Summary: InstanceFactory
                 Key: ACCUMULO-2497
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2497
             Project: Accumulo
          Issue Type: Improvement
          Components: client
            Reporter: Bill Havanki
            Assignee: Bill Havanki
            Priority: Minor


Working on ACCUMULO-2470 (unit tests for server/base) is made difficult by the heavy dependence on static method calls in our architecture. This ticket is for introducing an {{InstanceFactory}} interface that will greatly ease testing of code that currently retrieves instances via static methods (e.g., {{HdfsZooInstance.getInstance()}}.

Limitations:
* Work here should be limited to creating {{InstanceFactory}} and its implementations, and not integrating it into existing code (yet).
* Work is limited to 1.6 and later. To avoid perturbing the 1.6.0 release no new code may be introduced into the public API ({{Instance}} is in the public API).
* A refactoring of the client API is being considered (see ACCUMULO-2128), so this change should not further complicate - and should hopefully help - that future effort.



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