you can use the _cat/indices?v
API, which prints the total index size and total size of primary shards.
if you can provide the output of Above API which shows your index in question, we can confirm its a total index size or size of all primary shards.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…