wei shen created SOLR-8251:
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Summary: MatchAllDocsQuery is much slower in solr5.3.1 compare to
solr4.7
Key: SOLR-8251
URL: https://issues.apache.org/jira/browse/SOLR-8251
Project: Solr
Issue Type: Bug
Components: search
Affects Versions: 5.3
Reporter: wei shen
I am trying to upgrade our production solr instance from 4.7 to 5.3.1.
Unfortunately when I do load testing I find the MatchAllDocsQuery is much
slower in solr 5.3.1 compare to 4.7. (solr 5.3.1 is faster in load test with
queries other than MatchAllDocsQuery). I asked solr-user and discussed with
Yonik Seeley. He confirmed that he can see the problem too comparing solr 5.3.1
and 4.10.
here is the query I use:
q={!cache=false}*:*&fq=+categoryIdsPath:1001&fl=id&start=0&rows=2&debug=true
for me the query is consistently about 60-70% slower on solr5 than solr4.
Yonik mentioned in his email "For me, 5.3.1
is about 5x slower than 4.10 for this particular query."
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