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https://issues.apache.org/jira/browse/SOLR-14516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17135801#comment-17135801
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Ishan Chattopadhyaya commented on SOLR-14516:
---------------------------------------------
The underlying reason for this that while populating a SolrInputDocument with
docValues, the string docValues field gets a BytesRef (instead of
CharSequence). The Field class is unable to get a string representation of the
field containing BytesRef, and hence sends out a null to the response writers.
> NPE during Realtime GET
> -----------------------
>
> Key: SOLR-14516
> URL: https://issues.apache.org/jira/browse/SOLR-14516
> Project: Solr
> Issue Type: Bug
> Reporter: Noble Paul
> Assignee: Noble Paul
> Priority: Major
> Fix For: 8.6
>
>
> The exact reason is unknown. But the following is the stacktrace
>
> o.a.s.s.HttpSolrCall null:java.lang.NullPointerException\n\tat
> org.apache.solr.common.util.JsonTextWriter.writeStr(JsonTextWriter.java:83)\n\tat
> org.apache.solr.schema.StrField.write(StrField.java:101)\n\tat
> org.apache.solr.response.TextResponseWriter.writeVal(TextResponseWriter.java:124)\n\tat
>
> org.apache.solr.response.JSONWriter.writeSolrDocument(JSONWriter.java:106)\n\tat
>
> org.apache.solr.response.TextResponseWriter.writeSolrDocumentList(TextResponseWriter.java:170)\n\tat
>
> org.apache.solr.response.TextResponseWriter.writeVal(TextResponseWriter.java:147)\n\tat
>
> org.apache.solr.common.util.JsonTextWriter.writeNamedListAsMapWithDups(JsonTextWriter.java:386)\n\tat
>
> org.apache.solr.common.util.JsonTextWriter.writeNamedList(JsonTextWriter.java:292)\n\tat
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