Description
When collapsing on a field that doesn't exist for all documents, the existence of a segment that does not contain any documents that have a value can cause an NPE as the collapse parser assumes the DocValues for a segment will always be non-null.
Attachments
Attachments
Issue Links
- is related to
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SOLR-6168 enhance collapse QParser so that "group head" documents can be selected by more complex sort options
- Closed