Marek created SOLR-13206:
----------------------------
Summary: ArrayIndexOutOfBoundsException in
org/apache/solr/request/SimpleFacets.java[705]
Key: SOLR-13206
URL: https://issues.apache.org/jira/browse/SOLR-13206
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Affects Versions: master (9.0)
Environment: h1. Steps to reproduce
* Use a Linux machine.
* Build commit {{ea2c8ba}} of Solr as described in the section below.
* Build the films collection as described below.
* Start the server using the command {{./bin/solr start -f -p 8983 -s
/tmp/home}}
* Request the URL given in the bug description.
h1. Compiling the server
{noformat}
git clone https://github.com/apache/lucene-solr
cd lucene-solr
git checkout ea2c8ba
ant compile
cd solr
ant server
{noformat}
h1. Building the collection and reproducing the bug
We followed [Exercise
2|http://lucene.apache.org/solr/guide/7_5/solr-tutorial.html#exercise-2] from
the [Solr Tutorial|http://lucene.apache.org/solr/guide/7_5/solr-tutorial.html].
{noformat}
mkdir -p /tmp/home
echo '<?xml version="1.0" encoding="UTF-8" ?><solr></solr>' > /tmp/home/solr.xml
{noformat}
In one terminal start a Solr instance in foreground:
{noformat}
./bin/solr start -f -p 8983 -s /tmp/home
{noformat}
In another terminal, create a collection of movies, with no shards and no
replication, and initialize it:
{noformat}
bin/solr create -c films
curl -X POST -H 'Content-type:application/json' --data-binary '{"add-field":
{"name":"name", "type":"text_general", "multiValued":false, "stored":true}}'
http://localhost:8983/solr/films/schema
curl -X POST -H 'Content-type:application/json' --data-binary
'{"add-copy-field" : {"source":"*","dest":"_text_"}}'
http://localhost:8983/solr/films/schema
./bin/post -c films example/films/films.json
curl -v "URL_BUG"
{noformat}
Please check the issue description below to find the "URL_BUG" that will allow
you to reproduce the issue reported.
Reporter: Marek
Requesting the following URL causes Solr to return an HTTP 500 error response:
{noformat}
http://localhost:8983/solr/films/select?group=true&group.func=genre&group.facet=true&facet.pivot=_version_&on&facet=true
{noformat}
The error response seems to be caused by the following uncaught exception:
{noformat}
ERROR (qtp689401025-21) [ x:films] o.a.s.h.RequestHandlerBase
java.lang.ArrayIndexOutOfBoundsException: 0
at
org.apache.solr.request.SimpleFacets.getGroupedCounts(SimpleFacets.java:705)
at
org.apache.solr.request.SimpleFacets.getTermCounts(SimpleFacets.java:495)
at
org.apache.solr.request.SimpleFacets.getTermCountsForPivots(SimpleFacets.java:414)
at
org.apache.solr.handler.component.PivotFacetProcessor.processSingle(PivotFacetProcessor.java:221)
at
org.apache.solr.handler.component.PivotFacetProcessor.process(PivotFacetProcessor.java:169)
at
org.apache.solr.handler.component.FacetComponent.process(FacetComponent.java:279)
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:298)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:199)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2559)
at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:711)
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:516)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:394)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:340)
394)
[...]
{noformat}
There is accessed the first element of an empty array of strings, stored in the
member 'org.apache.solr.search.grouping.GroupingSpecification.fields'. There is
an attept to put some strings to the array at
org/apache/solr/handler/component/QueryComponent.java[283]; however, the string
"group.field" is not present in params of the processed
org.apache.solr.request.SolrQueryRequest instance.
The cause of the issue seems to be similar to one reported in SOLR-13204.
To set up an environment to reproduce this bug, follow the description in the
'Environment' field.
We automatically found this issue and ~70 more like this using [Diffblue
Microservices Testing|https://www.diffblue.com/labs/?utm_source=solr-br]. Find
more information on this [fuzz testing
campaign|https://www.diffblue.com/blog/2018/12/19/diffblue-microservice-testing-a-sneak-peek-at-our-early-product-and-results?utm_source=solr-br].
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