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David Smiley commented on SOLR-6510: ------------------------------------ I looked into this a bit, applying Christine's patch. It appears that there may be a bug in MultiDocValues (a DocValues view over multiple atomic segments). If there is no value, you *don't* get -1 for the ord, and hence the test complains. The BytesRef shows to be the empty string. I'll dig into this more later. > select?collapse=... - fix NPE in Collapsing(FieldValue|Score)Collector > ---------------------------------------------------------------------- > > Key: SOLR-6510 > URL: https://issues.apache.org/jira/browse/SOLR-6510 > Project: Solr > Issue Type: Bug > Affects Versions: 4.8.1 > Reporter: Christine Poerschke > Priority: Minor > Fix For: 4.10.2 > > > Affects branch_4x but not trunk, collapse field must be docValues=true and > shard empty (or with nothing indexed for the field?). -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org