Dawid Weiss created LUCENE-4020:
-----------------------------------

             Summary: Tests may not be repeatable across different platforms/ 
JVMs due to different locale/ timezone being picked.
                 Key: LUCENE-4020
                 URL: https://issues.apache.org/jira/browse/LUCENE-4020
             Project: Lucene - Java
          Issue Type: Bug
            Reporter: Dawid Weiss
            Assignee: Dawid Weiss
            Priority: Minor
             Fix For: 4.0


This is because the source array can be/ is different for each system/ JVM. So 
this pick is not repeatable for example:
{code}
  /** 
   * Return a random Locale from the available locales on the system.
   */
  public static Locale randomLocale(Random random) {
    Locale locales[] = Locale.getAvailableLocales();
    return locales[random.nextInt(locales.length)];
  }
{code}

I don't think there is much we can do to make it repeatable (other than maybe 
enforcing locale using system property).

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