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https://issues.apache.org/jira/browse/SOLR-13318?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16871679#comment-16871679
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Jason Gerlowski commented on SOLR-13318:
----------------------------------------

Thanks for bringing this up again.

It probably still makes sense to backport.  I'm not sure what the odds of a 
7.7.3 release are, but the effort required to backport this is low, and if one 
occurs, it would be nice to offer this fix to people in it.

I can put it on my todo list for this week, and will make sure I follow up this 
time.

> JsonFacetingResponse classes should record  provide access to count fields as 
> longs
> -----------------------------------------------------------------------------------
>
>                 Key: SOLR-13318
>                 URL: https://issues.apache.org/jira/browse/SOLR-13318
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrJ
>    Affects Versions: 7.7.1
>            Reporter: Jason Gerlowski
>            Assignee: Jason Gerlowski
>            Priority: Minor
>         Attachments: SOLR-13318-branch_8x.patch, SOLR-13318.patch, 
> SOLR-13318.patch
>
>
> JsonFacetingResponse and its series of dependent classes hold a variety of 
> count fields for bucket counts and various optional properties 
> ({{allBuckets}}, {{numBuckets}}, etc.).  Currently, some of the code that 
> parses these values out of the originating NamedList either stores or casts 
> the values as ints.  When doc counts are low this works fine.  But when the 
> doc counts become larger and stray into "long" territory, SolrJ is liable to 
> blow up with ClassCastExceptions.
> A user on the list reported on of these with the partial stack trace:
> {code}
> Caused by: java.lang.ClassCastException: java.lang.Long cannot be cast to 
> java.lang.Integer
>       at 
> org.apache.solr.client.solrj.response.json.NestableJsonFacet.<init>(NestableJsonFacet.java:52)
>       at 
> org.apache.solr.client.solrj.response.QueryResponse.extractJsonFacetingInfo(QueryResponse.java:200)
>       at 
> org.apache.solr.client.solrj.response.QueryResponse.getJsonFacetingResponse(QueryResponse.java:571)
> {code}
> We should fix this so that these classes can be used without incident for any 
> doc counts.



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