How to handle bulk data in "Terms Query"

Elastic Stack Elasticsearch
1

Hi,
Need to check the list of 10000 ids available in my indexed doc? How to achieve that efficiently.
I am using java apis for elastic search
"query" : {
"terms" : {
"DestCountry" : ["US","IT"] // => How to give lakhs of data here?
}
}
}
}

2

I'm not sure that you can. You may have to split the query in smaller queries.
Unsure though.