CODEWITHSUNDEEP
elasticsearch
goalie7960
goalie7960

Reputation: 873

Short queries return not enough results

Hey I have a field in elasticsearch that is analyzed with the alphanumeric_analyzer. Then I index data into that field that looks like this:

Test-00001

Test-00002

to

Test-01000

If I execute the following query, I get 250 results consistently. But they aren't necessarily Test-00001 to Test -00250. 

`{
  "query": {
    "match": {
      "filename_Analyzed": {
        "type": "phrase_prefix",
        "query": "0"
      }
    }
  }
}`

I was expecting to get 1000 results, but I only get 250. Are my expectations correct, or is the search incorrect?

EDIT 1:

Gist for the mapping: https://gist.github.com/goalie7960/8ffd1536269a901f18bc

EDIT 2:

If I double the number of shards, the number of results also doubles. So 5 shards = 250 results, 10 shards = 500 results, etc.

EDIT 3:

Here's a gist for the analyzer I am using. But I can also reproduce with the standard analyzer.

https://gist.github.com/goalie7960/b0bbbddf1cee29b4b5ed

Upvotes: 0

Views: 288

Answers (1)

goalie7960
goalie7960

Reputation: 873

Turns out the prefix query or phrase prefix was exceeding the max expansion limit in elastic search. A non simple solution was to switch to ngram analysis and it has fixed the problem. Yay.

Upvotes: 1

Related Questions