elasticsearch, function_score SearchPhaseExecutionException

Question

I followed the tutorial at the last part of this page.

POST /merchantindex/_search
{
    "function_score": {
    "query": {
    {"query_string": { "query": "test"}}
    },
    "functions": [
        {
            "script_score": 
            {
                "script": "return _score;"
            }
        }
    ]
}
}

What I am expecting the returning of relevance score. I wanted to do some processing with the _score, e.g. _score * some other stuffs but I am just trying if the code works for now.

Error that I got is

"error": "SearchPhaseExecutionException[Failed to execute phase [query], all shards failed;...

Olly Cruickshank · Accepted Answer · 2015-03-09 09:16:13Z

1

This error:

"error": "SearchPhaseExecutionException[Failed to execute phase [query], all shards failed;...

typically means that the formatting of your query is wrong.

if you check your query you'll see that you have two curly brackets between query and query_string:

"query": {    {"query_string":

Also function_score needs to sit inside a query and functions needs to be inside function_score.

Try this instead:

curl -XPOST "http://localhost:9200/merchantindex/_search" -d '
{
    "query": {
      "function_score" : {
         "query" :{
            "query_string": { "query": "test"}
         },
         "functions": [
         {
            "script_score": {
                "script": "return _score;"
            }
         }
       ]
     }
   }
}'

edited Mar 9, 2015 at 9:16

answered Mar 9, 2015 at 8:29

Olly Cruickshank

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2 Comments

FailedMathematician Over a year ago

I actually followed the code from some site, and I have tested your version and it is not functioning as well (same error). =(. Please advise.

Olly Cruickshank Over a year ago

How have you defined your script return_score? Can you add your full error message to your question?

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