[jira] [Resolved] (SOLR-13201) NullPointerException in ConcurrentHashMap caused by passing null to get mmethod in org/apache/solr/schema/IndexSchema.java[1201]

["Mikhail Khludnev (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-13201?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mikhail Khludnev resolved SOLR-13201.
-------------------------------------
       Resolution: Duplicate
    Fix Version/s: master (9.0)
                   8.x

> NullPointerException in ConcurrentHashMap caused by passing null to get mmethod in org/apache/solr/schema/IndexSchema.java[1201]
> --------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-13201
>                 URL: https://issues.apache.org/jira/browse/SOLR-13201
>             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
>            Priority: Minor
>              Labels: diffblue, newdev
>             Fix For: 8.x, master (9.0)
>
>         Attachments: home.zip
>
>
> Requesting the following URL causes Solr to return an HTTP 500 error response:
> {noformat}
> http://localhost:8983/solr/films/select?q=initial_release_date:[*%20TO%20NOW-18YEAR]&wt=php&json.facet.facet.field=2
> {noformat}
> The error response seems to be caused by the following uncaught exception:
> {noformat}
> ERROR (qtp689401025-19) [   x:films] o.a.s.h.RequestHandlerBase java.lang.NullPointerException
> 	at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)
> 	at org.apache.solr.schema.IndexSchema.getFieldOrNull(IndexSchema.java:1201)
> 	at org.apache.solr.schema.IndexSchema.getField(IndexSchema.java:1225)
> 	at org.apache.solr.search.facet.FacetField.createFacetProcessor(FacetField.java:118)
> 	at org.apache.solr.search.facet.FacetRequest.process(FacetRequest.java:397)
> 	at org.apache.solr.search.facet.FacetProcessor.processSubs(FacetProcessor.java:472)
> 	at org.apache.solr.search.facet.FacetProcessor.fillBucket(FacetProcessor.java:429)
> 	at org.apache.solr.search.facet.FacetQueryProcessor.process(FacetQuery.java:64)
> 	at org.apache.solr.search.facet.FacetRequest.process(FacetRequest.java:401)
> 	at org.apache.solr.search.facet.FacetModule.process(FacetModule.java:139)
> 	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}
> There is called method 'get' on the member 'org.apache.solr.schema.IndexSchema.dynamicFieldCache' (which os a 'ConcurrentHashMap') with null as an argument; that leads to a crash inside 'get' method. The null value (passed to 'get' method) comes from from member 'field' of 'org.apache.solr.search.facet.FacetField' instance' at org/apache/solr/search/facet/FacetField.java[118].
> We found this bug 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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