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From "Paul Rogers (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-5112) Unit tests derived from PopUnitTestBase fail in IDE due to config errors
Date Wed, 07 Dec 2016 01:17:58 GMT
Paul Rogers created DRILL-5112:

             Summary: Unit tests derived from PopUnitTestBase fail in IDE due to config errors
                 Key: DRILL-5112
                 URL: https://issues.apache.org/jira/browse/DRILL-5112
             Project: Apache Drill
          Issue Type: Bug
    Affects Versions: 1.8.0
            Reporter: Paul Rogers
            Assignee: Paul Rogers

Drill provides a wide variety of unit tests. Many derive from {{PopUnitTestBase}} to test
the Physical OPerators.

The tests use a default configuration:

protected static DrillConfig CONFIG;

  public static void setup() {
    CONFIG = DrillConfig.create();

The default config tries to locate a {{drill-override.conf}} file somewhere on the class path.

When run in Eclipse, no such file exists. Instead, no override file is found and defaults
are used. The defaults allow a web server to be started.

Many tests start multiple Drillbits using the above config. When this occurs, each tries to
start a web server. The second one fails because the HTTP port is already in use.

It is not clear how these tests succeed when run from Maven. Perhaps in that scenario the
required file is somehow placed onto the class path? No such file exists in the source path.

The solution is to initialize the config using the same settings as used in the {{BaseTestQuery}}
test case: the unit tests then work fine in Eclipse.

As an aside, having multiple ways to set up the Drill config (and other items) leads to much
wasted time as each engineer must learn the quirks of each test hierarchy.

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