Erez Michalak created SOLR-8879:
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Summary: Wrong number of matches is returned when group cache
limit is exceeded and some results are filtered by a post filter
Key: SOLR-8879
URL: https://issues.apache.org/jira/browse/SOLR-8879
Project: Solr
Issue Type: Bug
Components: search
Affects Versions: 5.3.1
Reporter: Erez Michalak
When the group cache limit is exceeded (see the warning "The grouping cache is
active, but not used because it exceeded the max cache limit of %d percent" at
the Grouping class), and some of the results are filtered by a post filter, the
number of matches at the response is wrong (doesn't take the post filter into
account).
Seems like this can be fixed if the following lines are added after the warning
and before searchWithTimeLimiter:
if (pf.postFilter != null) {
pf.postFilter.setLastDelegate(secondPhaseCollectors);
secondPhaseCollectors = pf.postFilter;
}
(because exceeding the cache limit should work exactly as working with no cache
at all)
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