[jira] [Created] (PHOENIX-5641) Decouple phoenix-queryserver from phoenix-core

["Istvan Toth (Jira)" <ji...@apache.org>]

Istvan Toth created PHOENIX-5641:
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             Summary: Decouple phoenix-queryserver from phoenix-core
                 Key: PHOENIX-5641
                 URL: https://issues.apache.org/jira/browse/PHOENIX-5641
             Project: Phoenix
          Issue Type: Improvement
    Affects Versions: 5.1.0
            Reporter: Istvan Toth
            Assignee: Istvan Toth


phoenix-queryserver has been moved to a separate repo, and it's versioning has been decoupled from that of phoenix-core.

Yet, phoenix-queryserver still uses code from phoenix-core, and phoenix-core in turn contains code that is only used by phoenix-queryserver.

This causes (at least) the following problems:
 * Adding new features to PQS is problematic, because it depends on an old released version of phoenix
 * The phoenix-thin-client includes phoenix code, that is not really necessary

I propose fully decoupling the PQS code from phoenix proper. This effectively means:
 * duplicating the PQS specific configuration parameter names and defaults in PQS
 * copying a minimal amount of code for building the JDBC connection URL
 * copying the InstanceResolver cache class

The tests are still dependent on phoenix-core, but I do not consider that a problem.

If/when this patch lands in PQS, we should also remove the PQS specific parameters from phoenix-core.



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