elasticsearch - ES search without wildcards not getting results with analyzer -


after reading official documentation , q&a here still can't elasticsearch search partial words without wildcards.

i've got ~470k entries of companies , want accomplish kind of autocompletion when starting enter company name.

the index gets created this: 

{   "lei-index" : {     "aliases" : { },     "mappings" : {       "record" : {         "properties" : {           "legalname" : {             "type" : "text",             "analyzer" : "legalname_analyzer",             "search_analyzer" : "legalname_search"           }         }       }     },     "settings" : {       "index" : {         "number_of_shards" : "5",         "provided_name" : "lei-index",         "creation_date" : "1478597987141",         "analysis" : {           "filter" : {             "legalname_filter" : {               "type" : "edge_ngram",               "min_gram" : "4",               "max_gram" : "20"             }           },           "analyzer" : {             "legalname_analyzer" : {               "filter" : [                 "legalname_filter",                 "lowercase"               ],               "type" : "custom",               "tokenizer" : "legalname_tokenizer"             },             "legalname_search" : {               "filter" : [                 "legalname_filter",                 "standard",                 "lowercase"               ],               "type" : "custom",               "tokenizer" : "legalname_tokenizer"             }           },           "tokenizer" : {             "legalname_tokenizer" : {               "token_chars" : [                 "letter"               ],               "min_gram" : "4",               "type" : "edge_ngram",               "max_gram" : "20"             }           }         },         "number_of_replicas" : "1",         "uuid" : "mubvjn9bsbayrkvxsixxqw",         "version" : {           "created" : "5000051"         }       }     }   } }

when know lets hapag-loyd, can search "hapag" , 3 results "hapag loyd", "hapag-loyd", , "hapag loyd"

but want archive can search "hapa" , results.

http://localhost:9200/lei-index/record/_search?pretty&q=hapa

0 results

with wildcard results, including hapag loyd, guess wildcards inefficient in larger indexes

http://localhost:9200/lei-index/record/_search?pretty&q=hapa*

i tried use keywords tokenizer , leaving filter out , use tokenizer didn't expected results.

testing analyzer:

curl -xpost 'localhost:9200/lei-index/_analyze?pretty' -d '{ "analyzer": "legalname_analyzer", "text": "hapag"}' {   "tokens" : [     {       "token" : "hapa",       "start_offset" : 0,       "end_offset" : 4,       "type" : "word",       "position" : 0     },     {       "token" : "hapa",       "start_offset" : 0,       "end_offset" : 5,       "type" : "word",       "position" : 1     },     {       "token" : "hapag",       "start_offset" : 0,       "end_offset" : 5,       "type" : "word",       "position" : 1     }   ] }

would great if point out thinking goes wrong here, since it's first time work elasticsearch.

and 1 last thing, i've got nothing hapag-loyd, used example here.

thanks

when making following request, standard analyzer query_string query kicks in.

http://localhost:9200/lei-index/record/_search?pretty&q=hapa

that's not want. instead, need specify legalname field search_analyzer field leveraged:

http://localhost:9200/lei-index/record/_search?pretty&q=legalname:hapa

another solution keep query override standard analyzer of query string own one:

http://localhost:9200/lei-index/record/_search?pretty&q=hapa&analyzer=legalname_search

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