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  1. Core Server
  2. SERVER-18524

Different parsing for RLP index keys and queries leads to missing results

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    • Type: Icon: Bug Bug
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
    • 3.1.5
    • Affects Version/s: 3.1.2
    • Component/s: Text Search
    • Fully Compatible
    • ALL
    • Hide 
      (function () {
    'use strict';

    var t = db.fts;
    t.drop();

    t.ensureIndex({a: 'text'});
    t.insert({a: 'hello.world', language: 'arabic'});

    assert.eq(t.find({$text: {$search: 'hello.world', $language: 'arabic'}}).itcount(), 1);
}());
      Show
      (function () { 'use strict'; var t = db.fts; t.drop(); t.ensureIndex({a: 'text'}); t.insert({a: 'hello.world', language: 'arabic'}); assert.eq(t.find({$text: {$search: 'hello.world', $language: 'arabic'}}).itcount(), 1); }());
    • Platform 4 06/05/15, Platform 5 06/26/16

      When using RLP, there seems to be different parsing for index keys and queries, which can lead to missing results:

      > db.fts.ensureIndex({a: 'text'});
// The index is created

> db.fts.insert({a: 'hello.world', language: 'arabic'});
// Resultant index key from the RLP tokenizer: "{ : \"hello.world\", : 1.1 }"

> db.fts.find({$text: {$search: 'hello.world', $language: 'arabic'}}).itcount();
0

> db.fts.find({$text: {$search: 'hello.world', $language: 'arabic'}}).explain(true);

// Parsed terms:
"parsedTextQuery" : {
    "terms" : [
        "hello",
        "world"
    ],
    "negatedTerms" : [ ],
    "phrases" : [ ],
    "negatedPhrases" : [ ]
}

            Assignee:
            mark.benvenuto@mongodb.com Mark Benvenuto
            Reporter:
            kamran.khan Kamran K.
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              Created:
              Updated:
              Resolved: