A Match Query against a boolean field returns a result

[ericdcobb]

Using version 0.90.5.

Supplying a string in a match query against a boolean type field with its value set to 'true' will return a hit if the query is a non-empty string.

In the following example, the first query returns a result, the second does not.

PUT /test/test/1
{
    "hello" : true
}

POST /test/_search 
{
    "query": {
        "bool": {
            "minimum_number_should_match": 1,
            "should": [
               {"match": {
                  "hello": "foo"
               }}
            ]
        }
    }
}

POST /test/_search 
{
    "query": {
        "bool": {
            "minimum_number_should_match": 1,
            "should": [
               {"match": {
                  "hello": ""
               }}
            ]
        }
    }
}

Obviously this is a really dumb query 😄 .We are fixing our client to not build queries like this. This does seem like odd behavior though.

[imotov]

Currently null, "", "F", "false", "0", "off" and "no" is parsed as False. Everything else is True.

[ericdcobb]

Thank you Igor.