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Cesar Rodriguez commented on SOLR-13202: ---------------------------------------- In fact, if you run Solr with assertions enabled, the queries above produce an assertion violation in the constructor of {{JoinQuery}}, which clearly says it doesn't want null pointers: {code:java} public JoinQuery(String fromField, String toField, String coreName, Query subQuery) { assert null != fromField; assert null != toField; assert null != subQuery; this.fromField = fromField; this.toField = toField; this.q = subQuery; this.fromIndex = coreName; // may be null } {code} > Three NullPointerExceptions in org.apache.solr.search.JoinQuery.hashCode() > -------------------------------------------------------------------------- > > Key: SOLR-13202 > URL: https://issues.apache.org/jira/browse/SOLR-13202 > 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: Cesar Rodriguez > Priority: Major > Labels: diffblue, newdev > Attachments: home.zip > > > Requesting any of the following URLs causes Solr to return an HTTP 500 error > response: > {noformat} > http://localhost:8983/solr/films/select?fq={!join%20from=b%20to=a} > http://localhost:8983/solr/films/select?fq={!join%20to=a} > http://localhost:8983/solr/films/select?fq={!join} > {noformat} > The error response seems to be caused by the following uncaught exception: > {noformat} > java.lang.NullPointerException > at org.apache.solr.search.JoinQuery.hashCode(JoinQParserPlugin.java:578) > at org.apache.solr.search.QueryResultKey.<init>(QueryResultKey.java:52) > at > org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:1328) > 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) > [...] > {noformat} > The problem seems to be related with method {{hasCode}} in the class > {{org.apache.solr.search.JoinQuery}}: > {code:java} > @Override > public int hashCode() { > int h = classHash(); > h = h * 31 + fromField.hashCode(); > h = h * 31 + toField.hashCode(); > h = h * 31 + q.hashCode(); > h = h * 31 + Objects.hashCode(fromIndex); > h = h * 31 + (int) fromCoreOpenTime; > return h; > } > {code} > The URLs provided above selectively leave uninitialized the fields > {{fromField}}, {{fromIndex}}, {{q}}, and {{toField}}, but all of these fields > are accessed by this method. > > We 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]. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org