in gremlin-client/src/main/java/org/apache/tinkerpop/gremlin/driver/EndpointClientCollection.java [187:195]
private void submitMetrics(Runnable runnable){
if (collectMetrics && allowSubmitMetrics) {
try {
executorService.submit(runnable);
} catch (RejectedExecutionException e) {
logger.trace("Error submitting metrics", e);
}
}
}