@Override
    public void hook(final int spot) throws RuntimeException {
      switch (spot) {
        case 9: // Before Index update and after region entry lock.
          hooked = true;
          logger
              .info("QueryDataInconsistency.IndexManagerTestHook is hooked in Update Index Entry.");
          await().until(() -> !hooked);
          break;
        case 10: // Before Region update and after Index Remove call.
          hooked = true;
          logger
              .info("QueryDataInconsistency.IndexManagerTestHook is hooked in Remove Index Entry.");
          await().until(() -> !hooked);
          break;
        default:
          break;
      }
    }
This tests the data inconsistency during update on an index and querying the same UNLOCKED index.
geode-core/src/distributedTest/java/org/apache/geode/cache/query/dunit/QueryDataInconsistencyDUnitTest.java