@After
  public void tearDown() {
    statisticTypes = null;
    allStatistics = null;
    StatisticsTypeFactoryImpl.clear();
    StatArchiveWriter.clearTraceFilter();
  }
Integration tests for statistics sampling.

@since GemFire 7.0
geode-core/src/integrationTest/java/org/apache/geode/internal/statistics/StatSamplerIntegrationTest.java