Solr/Solrj: How can I determine the total number of documents in an index?

Question

How can I determine the total number of documents in a Solr index using Solrj?

After hours of searching on my own, I actually have an answer (given below); I'm only posting this question so others can find the solution more easily.

score 55 · Accepted Answer · answered Feb 19 '11 at 12:24

55

Here's what I'm using. Is this canonical? Is there a better way?

    SolrQuery q = new SolrQuery("*:*");
    q.setRows(0);  // don't actually request any data
    return server.query(q).getResults().getNumFound();

answered Feb 19 '11 at 12:24

George Armhold

30,824
50
153
232

13

For a quick REST API check, something like: `http://hostname:8983/solr/collection_name_here/query?debug=query&q=*:*` and `numFound` contains the count. – cfeduke Jun 23 '16 at 21:24
Something like `wget http://hostname:8983/solr/collection_name_here/query?q=*:*` also does the trick :)` (and stores the result in a file called `query?q=*:*`) – motagirl2 Apr 25 '19 at 19:07
6

Add the rows parameter to return no data, so just the count in "numFound": `http://hostname:8983/solr/collection_name_here/query?q=*:*&rows=0` – Jim Bob Mar 27 '20 at 20:57

score 2 · Answer 2 · edited Dec 07 '20 at 22:43

2

Your answer of sending the query *:* is probably the best, most general solution. Especially if you are using SolrCloud. However, there is an alternate solution, the Solr Core Admin API

edited Dec 07 '20 at 22:43

mlissner

17,359
18
106
169

answered Feb 06 '17 at 19:10

whomer

575
9
21

score 1 · Answer 3 · answered Feb 12 '21 at 17:25

1

Pasting the whole curl:

curl -s --negotiate -u: 'hostname:8983/solr/my_collection/query?q=*:*&rows=0' | jq '.response | .numFound'
1868000278

answered Feb 12 '21 at 17:25

michalrudko

1,432
2
16
30

score 0 · Answer 4 · edited Apr 23 '22 at 10:56

0

Here's what I use to get total docs using JSON/PHP hope this helps

// Get total number of documents in solr
$solrObj = file_get_contents("http://HOSTNAME:8983/solr/COLLECTION 
NAME/select?q=*:*&rows=0&wt=json");
// var_dump(json_decode($solrObj));
$res_obj = json_decode($solrObj);
$numDocs = $res_obj->response->numFound; 
echo "Total number docs found!: ".$numDocs."<br />";

edited Apr 23 '22 at 10:56

Tyler2P

2,324
26
22
31

answered Apr 23 '22 at 09:08

steve

1
1

score 0 · Answer 5 · answered Jul 07 '22 at 20:44

0

Depending how you are using it, notice the format options available. For my case XML is ideal.

http://localhost:8983/solr/drupal/select?q=*%3A*&rows=0&wt=xml

answered Jul 07 '22 at 20:44

jakebugz617

319
1
11

Solr/Solrj: How can I determine the total number of documents in an index?

5 Answers5

Linked