[SOLR-9174] After Solr 5.5, mm parameter doesn't work properly

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 5.5, 6.0, 6.0.1
• Component/s: query parsers, search
• Assignee: Unassigned
• Reporter: Issei Nishigata
• Created: 31/May/16 00:30
• Updated: 10/Jun/16 15:00

Description

“mm" parameter does not work properly, when I set "q.op=AND” after Solr 5.5.
In Solr 5.4, mm parameter works expectedly with the following setting.

[schema]

<fieldType name="bi_gram" class="solr.TextField">
  <analyzer>
    <tokenizer class="solr.NGramTokenizerFactory" minGramSize="2" maxGramSize="2"/>
  </analyzer>
</fieldType>

[request]

http://localhost:8983/solr/collection1/select?defType=edismax&q.op=AND&mm=2&q=solar

After Solr 5.5, the result will not be the same as Solr 5.4.

[Solr 5.4]

<response>
...
  <lst name="params">
    <str name="mm">2</str>
    <str name="q">solar</str>
    <str name="defType">edismax</str>
    <str name="q.op">AND</str>
  </lst>
...
<result name="response" numFound="1" start="0">
  <doc>
    <str name="id">0</str>
    <arr name="content">
      <str>solr</str>
    </arr>
  </doc>
</result>
<lst name="debug">
  <str name="rawquerystring">solar</str>
  <str name="querystring">solar</str>
  <str name="parsedquery">
  (+DisjunctionMaxQuery((((text:so text:ol text:la text:ar)~2))))/no_coord
  </str>
  <str name="parsedquery_toString">+(((text:so text:ol text:la text:ar)~2))</str>
  ...
</response>

[Solr 6.0.1]

<response>
...
  <lst name="params">
    <str name="mm">2</str>
    <str name="q">solar</str>
    <str name="defType">edismax</str>
    <str name="q.op">AND</str>
  </lst>
...
<result name="response" numFound="0" start="0"/>
  <lst name="debug">
    <str name="rawquerystring">solar</str>
    <str name="querystring">solar</str>
    <str name="parsedquery">
    (+DisjunctionMaxQuery(((+text:so +text:ol +text:la +text:ar))))/no_coord
    </str>
    <str name="parsedquery_toString">+((+text:so +text:ol +text:la +text:ar))</str>
...

As shown above, parsedquery also differs from Solr 5.4 and Solr 6.0.1(after Solr 5.5).

Issue Links

• is related to: SOLR-8812 ExtendedDismaxQParser (edismax) ignores Boolean OR when q.op=AND and mm is not explicitly set