@Override
  protected InternalIndexStatistics createStats(String indexName) {
    if (internalIndexStats == null) {
      internalIndexStats = new PartitionedIndexStatistics(this.indexName);
    }
    return internalIndexStats;
  }
String representing the state.

@return string representing all the relevant information.
geode-core/src/main/java/org/apache/geode/cache/query/internal/index/PartitionedIndex.java