public long getQueryRateAverageLatency() {
    return queryRateAverageLatency;
  }
Returns the average latency for query executions using the {@link LuceneIndex}

@return the average latency for query executions in nanoseconds using the Lucene Index
geode-lucene/src/main/java/org/apache/geode/cache/lucene/management/LuceneIndexMetrics.java