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From "Paul Rogers (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-5618) Allow non-core storage plugins to define an initial configuration
Date Wed, 28 Jun 2017 23:36:00 GMT
Paul Rogers created DRILL-5618:

             Summary: Allow non-core storage plugins to define an initial configuration
                 Key: DRILL-5618
                 URL: https://issues.apache.org/jira/browse/DRILL-5618
             Project: Apache Drill
          Issue Type: Improvement
          Components: Storage - Other
    Affects Versions: 1.8.0
            Reporter: Paul Rogers
            Priority: Minor

Consider the storage plugin defined in DRILL-5432 for reading pcap files. The plugin would
like to define an out-of-the-box plugin configuration.

Drill's current mechanism for providing initial plugin definitions is the {{bootstrap-storage-plugin.json}}
file. However, only one such file can exist in the class path.

To add an initial configuration for a custom extension, the extension writer must modify the
Drill core file. The {{bootstrap-storage-plugin.json}} file uses Jackson serialization. Because
the format plugin is external to the core, serialization cannot find the required classes
and Drill suffers from a {{JsonMappingException}}.

A solution is to allow each plugin to define a {{bootstrap-storage-plugin.json}} file, and
for the bootstrap mechanism to load the file associated with each plugin, whether that plugin
is part of the Drill core, a "contrib" plugin, or a user-defined plugin.

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