Difference between sqto and sfto

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1

What is the difference between sqto and sfto.
I assume sqto is search query operation per shard and sfto is fetching source of the document once we have document ids from search query operations. I cannot find anything in the reference to confirm my assumptions.

Thanks

2

Where are you seeing this?

3

_cat/nodes?h=sfto, sqto

4

https://www.elastic.co/guide/en/elasticsearch/reference/6.2/cat-nodes.html has these.

searchFetchTotal = Number of fetch operations
searchQueryTotal = Number of query operations

5

Hi warkolm
I have read the links but could not comprehend if

searchFetchTotal = Number of fetch operation
Does it mean operation per shard or per segment on the node

searchQueryTotal = Number of query operations
Does it mean source of a document is fetched from the node

Thank you

6

If you are using _cat/nodes, it gives you the number of queries per node and the number of fetches per node.

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