rajanimaski created SOLR-17155:
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Summary: Groupby query reports null pointer when unique key is not
stored
Key: SOLR-17155
URL: https://issues.apache.org/jira/browse/SOLR-17155
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: Grouping, query
Affects Versions: 9.4.1
Reporter: rajanimaski
Group by query is failing with the following error message. It looks like
[TopGroupsResultTransformer.java|https://github.com/apache/solr/blob/main/solr/core/src/java/org/apache/solr/search/grouping/distributed/shardresultserializer/TopGroupsResultTransformer.java#L237C24-L237C40]
retrieveDocument method is fetching doc based on id is calling a stored field
visitor method. I tried setting the "id" field to use doc values as they are
enabled "useDocValuesAsStored:true" but this didn't help.
Error message -
java.lang.NullPointerException: Cannot invoke
"org.apache.lucene.index.IndexableField.stringValue()" because "f" is null =>
java.lang.NullPointerException: Cannot invoke
"org.apache.lucene.index.IndexableField.stringValue()" because "f" is null at
org.apache.solr.schema.FieldType.toExternal(FieldType.java:378)
java.lang.NullPointerException: Cannot invoke
"org.apache.lucene.index.IndexableField.stringValue()" because "f" is null at
org.apache.solr.schema.FieldType.toExternal(FieldType.java:378) ~[?:?] at
org.apache.solr.search.grouping.distributed.shardresultserializer.TopGroupsResultTransformer.serializeTopGroups(TopGroupsResultTransformer.java:238)
~[?:?]
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