Marek created SOLR-13188:
----------------------------
Summary: NullPointerException in
org.apache.lucene.search.IndexSearcher.rewrite(IndexSearcher.java:667)
Key: SOLR-13188
URL: https://issues.apache.org/jira/browse/SOLR-13188
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
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].
The attached file ({{home.zip}}) gives the contents of folder {{/tmp/home}}
that you will obtain by following the steps below:
{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
{noformat}
Reporter: Marek
Attachments: home.zip
Requesting the following URL causes Solr to return an HTTP 500 error response:
{noformat}
http://localhost:8983/solr/films/select?q={!parent%20fq={!collapse%20field=id}&rentDocument}
{noformat}
The error response seems to be caused by the following uncaught exception:
{noformat}
ERROR (qtp689401025-21) [ x:films] o.a.s.s.HttpSolrCall
null:java.lang.NullPointerException
at
org.apache.lucene.search.IndexSearcher.rewrite(IndexSearcher.java:667)
at
org.apache.lucene.search.join.QueryBitSetProducer.getBitSet(QueryBitSetProducer.java:73)
at
org.apache.solr.search.join.BlockJoinParentQParser$BitDocIdSetFilterWrapper.getDocIdSet(BlockJoinParentQParser.java:135)
at
org.apache.solr.search.SolrConstantScoreQuery$ConstantWeight.scorer(SolrConstantScoreQuery.java:99)
at org.apache.lucene.search.Weight.bulkScorer(Weight.java:177)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:649)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:443)
at
org.apache.solr.search.SolrIndexSearcher.buildAndRunCollectorChain(SolrIndexSearcher.java:200)
at
org.apache.solr.search.SolrIndexSearcher.getDocListNC(SolrIndexSearcher.java:1604)
at
org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:1420)
at
org.apache.solr.search.SolrIndexSearcher.search(SolrIndexSearcher.java:567)
at
org.apache.solr.handler.component.QueryComponent.doProcessUngroupedSearch(QueryComponent.java:1434)
at
org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:373)
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)
[...]
{noformat}
In org/apache/lucene/search/join/QueryBitSetProducer.java[73] there is called
method 'org.apache.lucene.search.IndexSearcher.rewrite' with null value stored
in the member 'query'. Inside the called method there is method 'rewrite' on
the
accepted argument.
The member 'query' of QueryBitSetProducer is initialised only once (i.e. only
for
the first query issued; for subsequent queries it is not created again) from
'org.apache.solr.search.join.BlockJoinParentQParser.getCachedFilter'
(org/apache/solr/search/join/BlockJoinParentQParser.java[98]), where is
called 'createParentFilter' with null.
---------------------------
We found this bug using [Diffblue Microservices
Testing|https://www.diffblue.com/labs/]. 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].
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