How to merge the result after multi search, then I can sort them like sorting in queryDSL?

Elastic Stack Elasticsearch
1

I have a multi search like:

{"index" : "news"}
{"query":{ "bool":{ "must":[{ "more_like_this_field" : { "content"
:{"like_text" : "James", "min_term_freq":1, "max_query_terms" : 12}} }, {
"match":{"topic":"Business"} }] }}, "from" : 0, "size" : 4}
{"index" : "news"}
{"query":{ "bool":{ "must":[{ "more_like_this_field" : { "content"
:{"like_text" : "James", "min_term_freq":1, "max_query_terms" : 12}} }, {
"match":{"topic":"Sport"} }] }}, "from" : 0, "size" : 2}

but the result is an array, I expect I can merge them, and sort them by
date and _score, is there a best way to do this?
Can I sort them like in ES, adding " "sort" : [ { "date" : {"order" :
"desc"} }]" ?

thanks
johnson

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2

Hi,

All that the multi-search can do is executing several search requests in a
single HTTP request. If you want to have merged results for both topics,
you either need to submit a single query that matches both topics (but
there is no guarantee that you will have 4 of them in the business topic
and 2 of them in the sport topic, the first thousand matches might just be
about business), or on client side.

On Tue, Apr 15, 2014 at 10:15 AM, yyh3011@gmail.com wrote:

I have a multi search like:

{"index" : "news"}
{"query":{ "bool":{ "must":[{ "more_like_this_field" : { "content"
:{"like_text" : "James", "min_term_freq":1, "max_query_terms" : 12}} },
{ "match":{"topic":"Business"} }] }}, "from" : 0, "size" : 4}
{"index" : "news"}
{"query":{ "bool":{ "must":[{ "more_like_this_field" : { "content"
:{"like_text" : "James", "min_term_freq":1, "max_query_terms" : 12}} },
{ "match":{"topic":"Sport"} }] }}, "from" : 0, "size" : 2}

but the result is an array, I expect I can merge them, and sort them by
date and _score, is there a best way to do this?
Can I sort them like in ES, adding " "sort" : [ { "date" : {"order" :
"desc"} }]" ?

thanks
johnson

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Adrien Grand

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