Vamsee Yarlagadda created SOLR-6299:
---------------------------------------
Summary: Facet count on facet queries returns different results if
#shards > 1
Key: SOLR-6299
URL: https://issues.apache.org/jira/browse/SOLR-6299
Project: Solr
Issue Type: Bug
Components: SolrCloud
Affects Versions: 5.0
Reporter: Vamsee Yarlagadda
I am trying to run some facet counts on facet queries and looks like i am
getting different counts if i use >1 shards in the SolrCloud cluster.
Here is the upstream unit test:
https://github.com/apache/lucene-solr/blob/trunk/solr/core/src/test/org/apache/solr/request/SimpleFacetsTest.java#L173
Setup:
* Ingested 5 solr docs.
{code}
{
"responseHeader": {
"status": 0,
"QTime": 22,
"params": {
"indent": "true",
"q": "*:*",
"_": "1406346687337",
"wt": "json"
}
},
"response": {
"numFound": 5,
"start": 0,
"maxScore": 1,
"docs": [
{
"id": 2004,
"range_facet_l": [
2004
],
"hotel_s1": "b",
"airport_s1": "ams",
"duration_i1": 5,
"_version_": 1474661321774465000,
"timestamp": "2014-07-26T03:50:27.975Z",
"multiDefault": [
"muLti-Default"
],
"intDefault": 42
},
{
"id": 2000,
"range_facet_l": [
2000
],
"hotel_s1": "a",
"airport_s1": "ams",
"duration_i1": 5,
"_version_": 1474661323604230100,
"timestamp": "2014-07-26T03:50:29.734Z",
"multiDefault": [
"muLti-Default"
],
"intDefault": 42
},
{
"id": 2003,
"range_facet_l": [
2003
],
"hotel_s1": "b",
"airport_s1": "ams",
"duration_i1": 5,
"_version_": 1474661326312702000,
"timestamp": "2014-07-26T03:50:32.317Z",
"multiDefault": [
"muLti-Default"
],
"intDefault": 42
},
{
"id": 2001,
"range_facet_l": [
2001
],
"hotel_s1": "a",
"airport_s1": "dus",
"duration_i1": 10,
"_version_": 1474661326389248000,
"timestamp": "2014-07-26T03:50:32.375Z",
"multiDefault": [
"muLti-Default"
],
"intDefault": 42
},
{
"id": 2002,
"range_facet_l": [
2002
],
"hotel_s1": "b",
"airport_s1": "ams",
"duration_i1": 10,
"_version_": 1474661326464745500,
"timestamp": "2014-07-26T03:50:32.446Z",
"multiDefault": [
"muLti-Default"
],
"intDefault": 42
}
]
}
}
{code}
Here is the query being run:
{code}
Test code:
assertQ(
req(
"q", "*:*",
"fq", "id:[2000 TO 2004]",
"group", "true",
"group.facet", "true",
"group.field", "hotel_s1",
"facet", "true",
"facet.limit", facetLimit,
"facet.query", "airport_s1:ams"
),
"//lst[@name='facet_queries']/int[@name='airport_s1:ams'][.='2']"
);
$ curl
"http://localhost:8983/solr/collection1/select?facet=true&facet.query=airport_s1%3Aams&q=*%3A*&facet.limit=-100&group.field=hotel_s1&group=true&group.facet=true&fq=id%3A%5B2000+TO+2004%5D&indent=true&wt=xml";
{code}
Now, if i issue a query statement - On *1* shard system (Works as expected)
{code}
$ curl
"http://localhost:8983/solr/collection1/select?facet=true&facet.query=airport_s1%3Aams&q=*%3A*&facet.limit=-100&group.field=hotel_s1&group=true&group.facet=true&fq=id%3A%5B2000+TO+2004%5D&indent=true&wt=xml";
<?xml version="1.0" encoding="UTF-8"?>
<response>
<lst name="responseHeader">
<int name="status">0</int>
<int name="QTime">17</int>
<lst name="params">
<str name="facet">true</str>
<str name="indent">true</str>
<str name="facet.query">airport_s1:ams</str>
<str name="q">*:*</str>
<str name="facet.limit">-100</str>
<str name="group.field">hotel_s1</str>
<str name="group">true</str>
<str name="wt">xml</str>
<str name="fq">id:[2000 TO 2004]</str>
<str name="group.facet">true</str>
</lst>
</lst>
<lst name="grouped">
<lst name="hotel_s1">
<int name="matches">5</int>
<arr name="groups">
<lst>
<str name="groupValue">a</str>
<result name="doclist" numFound="2" start="0">
<doc>
<int name="id">2001</int>
<arr name="range_facet_l">
<long>2001</long>
</arr>
<str name="hotel_s1">a</str>
<str name="airport_s1">dus</str>
<int name="duration_i1">10</int>
<long name="_version_">1474989437819551744</long>
<date name="timestamp">2014-07-29T18:45:43.819Z</date>
<arr name="multiDefault">
<str>muLti-Default</str>
</arr>
<int name="intDefault">42</int></doc>
</result>
</lst>
<lst>
<str name="groupValue">b</str>
<result name="doclist" numFound="3" start="0">
<doc>
<int name="id">2003</int>
<arr name="range_facet_l">
<long>2003</long>
</arr>
<str name="hotel_s1">b</str>
<str name="airport_s1">ams</str>
<int name="duration_i1">5</int>
<long name="_version_">1474989439611568128</long>
<date name="timestamp">2014-07-29T18:45:45.528Z</date>
<arr name="multiDefault">
<str>muLti-Default</str>
</arr>
<int name="intDefault">42</int></doc>
</result>
</lst>
</arr>
</lst>
</lst>
<lst name="facet_counts">
<lst name="facet_queries">
<int name="airport_s1:ams">2</int>
</lst>
<lst name="facet_fields"/>
<lst name="facet_dates"/>
<lst name="facet_ranges"/>
</lst>
</response>
{code}
Now, if i run the same query on 2 shard system, i see facet count as *3*
instead of *2*.
Solr result on 2 shard cluster:
{code}
[systest@search-testing-c5-1 search]$ curl
"http://localhost:8983/solr/collection1/select?facet=true&facet.query=airport_s1%3Aams&q=*%3A*&facet.limit=-100&group.field=hotel_s1&group=true&group.facet=true&fq=id%3A%5B2000+TO+2004%5D&indent=true&wt=xml";
<?xml version="1.0" encoding="UTF-8"?>
<response>
<lst name="responseHeader">
<int name="status">0</int>
<int name="QTime">69</int>
<lst name="params">
<str name="facet">true</str>
<str name="indent">true</str>
<str name="facet.query">airport_s1:ams</str>
<str name="q">*:*</str>
<str name="facet.limit">-100</str>
<str name="group.field">hotel_s1</str>
<str name="group">true</str>
<str name="wt">xml</str>
<str name="fq">id:[2000 TO 2004]</str>
<str name="group.facet">true</str>
</lst>
</lst>
<lst name="grouped">
<lst name="hotel_s1">
<int name="matches">5</int>
<arr name="groups">
<lst>
<str name="groupValue">b</str>
<result name="doclist" numFound="3" start="0" maxScore="1.0">
<doc>
<int name="id">2002</int>
<arr name="range_facet_l">
<long>2002</long>
</arr>
<str name="hotel_s1">b</str>
<str name="airport_s1">ams</str>
<int name="duration_i1">10</int>
<long name="_version_">1474661326464745472</long>
<date name="timestamp">2014-07-26T03:50:32.446Z</date>
<arr name="multiDefault">
<str>muLti-Default</str>
</arr>
<int name="intDefault">42</int></doc>
</result>
</lst>
<lst>
<str name="groupValue">a</str>
<result name="doclist" numFound="2" start="0" maxScore="1.0">
<doc>
<int name="id">2001</int>
<arr name="range_facet_l">
<long>2001</long>
</arr>
<str name="hotel_s1">a</str>
<str name="airport_s1">dus</str>
<int name="duration_i1">10</int>
<long name="_version_">1474661326389248000</long>
<date name="timestamp">2014-07-26T03:50:32.375Z</date>
<arr name="multiDefault">
<str>muLti-Default</str>
</arr>
<int name="intDefault">42</int></doc>
</result>
</lst>
</arr>
</lst>
</lst>
<lst name="facet_counts">
<lst name="facet_queries">
<int name="airport_s1:ams">3</int>
</lst>
<lst name="facet_fields"/>
<lst name="facet_dates"/>
<lst name="facet_ranges"/>
</lst>
</response>
{code}
In order to replicate this, we can simply run the above test on >1 shard system
and the solr response will be different.
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