I setup two clusters. each cluster have two nodes(2 shards, 1 replica).
One saves document source. Another one doesn't save. Both cluster already
saves about 0.46 billion documents count.
Through the test, I found query performance of saving document source is
much better than not saving document source, almost twice. One is about
1.5s response time, another is about 3s response time.
I'm not sure this result is correct or not.
Can anyone else help confirm it?
Thank you very much!