@After
  public void tearDown() throws Exception {
    IndexManager.INDEX_ELEMARRAY_THRESHOLD_FOR_TESTING = -1;
    utils.closeCache();
  }
Tests adding entries to compact range index where there are undefined and null values
for the key
geode-core/src/integrationTest/java/org/apache/geode/cache/query/internal/index/CompactRangeIndexJUnitTest.java