@Override
  protected final void preTearDown() throws Exception {
    LocalRegion.ISSUE_CALLBACKS_TO_CACHE_OBSERVER = false;
  }
The test will verify <br>
1. Multiple oplogs are being rolled at once <br>
2. The Number of entries getting logged to the HTree are taking care of creation
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/MultipleOplogsRollingFeatureJUnitTest.java