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Elastic search - request will not be executed

After a short reading of the elastic search tutorial, I try to make the following query for a while:

{ "query" : { "size" : "10", "query" : { "bool" : { "must" : { "custom_score" : { "query" : { "text" : { "phrase" : {"query" : "iphone4", "type" : "phrase_prefix"}} }, "params" : { "param1" : 1000 }, "script" : "_score * param1 " } }, "should" : [{ "custom_score" : { "query" : { "match_all" : {}}, "params" : { "param2" : 0.001 }, "script" : "_score * doc['matches'].value * param2 " } },{ "custom_score" : { "query" : {"match_all" : {}}, "params" : { "param3" : 0.001 }, "script" : "_score * doc['hits'].value * param3 " } }] } } } }

When I try to start it, I get the following error:

 { "error": "SearchPhaseExecutionException[Failed to execute phase [query], total failure; shardFailures {[jJz-l-ENSV-0inWp2Sf8Bw][searches][2]: SearchParseException[[searches][2]: from[-1],size[-1]: Parse Failure [Failed to parse source [{\n\"query\" :\n{ \n \t\"size\" : \"10\",\n \t\"query\" : {\n\t\t\"bool\" : {\n\t\t\t\"must\" : {\n\t\t\t\t\"custom_score\" : {\n\t\t\t\t\t\"query\" : {\n\t\t\t\t\t\t\"text\" : { \"phrase\" : {\"query\" : \"iphone4\", \"type\" : \"phrase_prefix\"}}\n\t\t\t\t\t},\n\t\t\t\t\t\"params\" : {\n \t\t\t\t\t\"param1\" : 1000\n \t\t\t\t\t },\n\t\t\t\t\t\"script\" : \"_score * param1 \"\n\t\t\t\t}\n\t\t\t},\n\t\t\t\"should\" : [{ \n\t\t\t\t\"custom_score\" : {\n\t\t\t\t\t\"query\" : { \"match_all\" : {}},\n\t\t\t\t\t\"params\" : {\n \t\t\t\t\t\"param2\" : 0.001\n \t\t\t\t\t },\n\t\t\t\t\t\"script\" : \"_score * doc['matches'].value * param2 \"\n\t\t\t\t}\n\t\t\t},{\n\t\t\t\t\"custom_score\" : {\n\t\t\t\t\t\"query\" : {\"match_all\" : {}},\n\t\t\t\t\t\"params\" : {\n \t\t\t\t\t\"param3\" : 0.001\n \t\t\t\t\t },\n\t\t\t\t\t\"script\" : \"_score * doc['hits'].value * param3 \"\n\t\t\t\t}\n\t\t\t}]\n\t \t\n\t\t}\n\t}\n}\n}]]]; nested: QueryParsingException[[searches] [_na] query malformed, no field after start_object]; }{[jJz-l-ENSV-0inWp2Sf8Bw][searches][4]: SearchParseException[[searches][4]: from[-1],size[-1]: Parse Failure [Failed to parse source [{\n\"query\" :\n{ \n \t\"size\" : \"10\",\n \t\"query\" : {\n\t\t\"bool\" : {\n\t\t\t\"must\" : {\n\t\t\t\t\"custom_score\" : {\n\t\t\t\t\t\"query\" : {\n\t\t\t\t\t\t\"text\" : { \"phrase\" : {\"query\" : \"iphone4\", \"type\" : \"phrase_prefix\"}}\n\t\t\t\t\t},\n\t\t\t\t\t\"params\" : {\n \t\t\t\t\t\"param1\" : 1000\n \t\t\t\t\t },\n\t\t\t\t\t\"script\" : \"_score * param1 \"\n\t\t\t\t}\n\t\t\t},\n\t\t\t\"should\" : [{ \n\t\t\t\t\"custom_score\" : {\n\t\t\t\t\t\"query\" : { \"match_all\" : {}},\n\t\t\t\t\t\"params\" : {\n \t\t\t\t\t\"param2\" : 0.001\n \t\t\t\t\t },\n\t\t\t\t\t\"script\" : \"_score * doc['matches'].value * param2 \"\n\t\t\t\t}\n\t\t\t},{\n\t\t\t\t\"custom_score\" : {\n\t\t\t\t\t\"query\" : {\"match_all\" : {}},\n\t\t\t\t\t\"params\" : {\n \t\t\t\t\t\"param3\" : 0.001\n \t\t\t\t\t },\n\t\t\t\t\t\"script\" : \"_score * doc['hits'].value * param3 \"\n\t\t\t\t}\n\t\t\t}]\n\t \t\n\t\t}\n\t}\n}\n}]]]; nested: QueryParsingException[[searches] [_na] query malformed, no field after start_object]; }]", "status": 500 }

What do you think is my fault? Any suggestions on how I should act?

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1 answer

You need to "combine" a subquery with an external query. Try the following:

 { "query" : { "bool" : { "must" : { "custom_score" : { "query" : { "text" : { "phrase" : {"query" : "iphone4", "type" : "phrase_prefix"}} }, "params" : { "param1" : 1000 }, "script" : "_score * param1 " } }, "should" : [{ "custom_score" : { "query" : { "match_all" : {}}, "params" : { "param2" : 0.001 }, "script" : "_score * doc['matches'].value * param2 " } },{ "custom_score" : { "query" : {"match_all" : {}}, "params" : { "param3" : 0.001 }, "script" : "_score * doc['hits'].value * param3 " } }] } }, "size" : "10" }

If you use it with curl, you may also need to replace ' with '\''

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Source: https://habr.com/ru/post/1440053/

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