Elasticsearch CCS: Will request be sent to all clusters when I specify the cluster?

Elastic Stack Elasticsearch
1

ES version: 6.2.4
I have same index which named "index-aa" in both clusterA and clusterB.
Normally I use the address of clusterA to do "cross cluster search" to get data from "index-aa", Use "*:index-aa" to get data both from clusterA and clusterB.
But sometimes I will specify the cluster name "clusterA:index-aa", just to get data from clusterA. My question is: will the request be sent to clusterB also? ES client is smart enough to check how many clusters should be searched (To save the network bandwidth)?
Thanks.
@javanna

2

Hi,
when you specify the alias of a specific cluster, the request will only go to such cluster, there won't be any request going to the other clusters.

Cheers
Luca

3

That's great! Thanks.

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