Varun Thacker created SOLR-7818:
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Summary: Distributed stats only calculates with the terms that are
present in the last shard of the distributed request
Key: SOLR-7818
URL: https://issues.apache.org/jira/browse/SOLR-7818
Project: Solr
Issue Type: Bug
Affects Versions: 5.2.1, 5.2, 5.1, 5.0
Reporter: Varun Thacker
Assignee: Varun Thacker
Fix For: 5.3
In ExactStatsCache#mergeToGlobalStats we go through the n responses and merge
the termStats and colStats. But we keep putting the terms into the map which
means only the last shard response terms will get used.
This can lead to some terms not ending up calculating the distributed idf
scores as the last shard might not have contained the term while the other
shards actually had those terms.
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