I vaguely recall some discussion concerning removal of the field cache in Lucene.
-- Jack Krupansky On Thu, Nov 5, 2015 at 10:38 PM, wei <sw90...@gmail.com> wrote: > We are running our search on solr4.7 and I am evaluating whether to upgrade > to solr5.3.1. I found MatchAllDocsQuery is much slower in solr5.3.1. Anyone > know why? > > We have a lot of queries without any query keyword, but we apply filters on > the query. Load testing shows those queries are much slower in solr5.3.1 > compare to 4.7. If we load test with queries with search keywords, we can > see the queries are much faster in solr5.3.1 compare solr4.7. > here is sample debug info: > (in solr 4.7) > > <?xml version="1.0" encoding="UTF-8"?><response> > <lst name="responseHeader"> > <int name="status">0</int> > <int name="QTime">86</int> > <lst name="params"> > <str name="fl">id</str> > <str name="start">0</str> > <str name="q">*:*</str> > <str name="debug">true</str> > <str name="fq">+categoryIdsPath:1001</str> > <str name="rows">2</str> > </lst> > </lst> > <result name="response" numFound="572873" start="0"> > <doc> > <str name="id">36652255</str> > </doc> > <doc> > <str name="id">36651884</str> > </doc> > </result> > <lst name="debug"> > <str name="rawquerystring">*:*</str> > <str name="querystring">*:*</str> > <str name="parsedquery">MatchAllDocsQuery(*:*)</str> > <str name="parsedquery_toString">*:*</str> > <lst name="explain"> > <str name="36652255">1.0 = (MATCH) MatchAllDocsQuery, product of: > 1.0 = queryNorm</str> > <str name="36651884">1.0 = (MATCH) MatchAllDocsQuery, product of: > 1.0 = queryNorm</str> > </lst> > <str name="QParser">LuceneQParser</str> > <arr name="filter_queries"> > <str>+categoryIdsPath:1001</str> > </arr> > <arr name="parsed_filter_queries"> > <str>+categoryIdsPath:1001</str> > </arr> > <lst name="timing"> > <double name="time">86.0</double> > <lst name="prepare"> > <double name="time">0.0</double> > <lst name="query"> > <double name="time">0.0</double> > </lst> > <lst name="facet"> > <double name="time">0.0</double> > </lst> > <lst name="mlt"> > <double name="time">0.0</double> > </lst> > <lst name="highlight"> > <double name="time">0.0</double> > </lst> > <lst name="stats"> > <double name="time">0.0</double> > </lst> > <lst name="debug"> > <double name="time">0.0</double> > </lst> > </lst> > <lst name="process"> > <double name="time">86.0</double> > <lst name="query"> > <double name="time">85.0</double> > </lst> > <lst name="facet"> > <double name="time">0.0</double> > </lst> > <lst name="mlt"> > <double name="time">0.0</double> > </lst> > <lst name="highlight"> > <double name="time">0.0</double> > </lst> > <lst name="stats"> > <double name="time">0.0</double> > </lst> > <lst name="debug"> > <double name="time">1.0</double> > </lst> > </lst> > </lst> > </lst></response> > > > (in solr 5.3.1) > > <?xml version="1.0" encoding="UTF-8"?><response> > <lst name="responseHeader"> > <int name="status">0</int> > <int name="QTime">313</int> > <lst name="params"> > <str name="fl">id</str> > <str name="start">0</str> > <str name="q">*:*</str> > <str name="debug">true</str> > <str name="fq">+categoryIdsPath:1001</str> > <str name="rows">2</str> > </lst> > </lst> > <result name="response" numFound="565657" start="0"> > <doc> > <str name="id">36652255</str> > </doc> > <doc> > <str name="id">36651884</str> > </doc> > </result> > <lst name="debug"> > <str name="rawquerystring">*:*</str> > <str name="querystring">*:*</str> > <str name="parsedquery">MatchAllDocsQuery(*:*)</str> > <str name="parsedquery_toString">*:*</str> > <lst name="explain"> > <str name="36652255">1.0 = *:*, product of: > 1.0 = boost > 1.0 = queryNorm</str> > <str name="36651884">1.0 = *:*, product of: > 1.0 = boost > 1.0 = queryNorm</str> > </lst> > <str name="QParser">LuceneQParser</str> > <arr name="filter_queries"> > <str>+categoryIdsPath:1001</str> > </arr> > <arr name="parsed_filter_queries"> > <str>+categoryIdsPath:1001</str> > </arr> > <lst name="timing"> > <double name="time">313.0</double> > <lst name="prepare"> > <double name="time">0.0</double> > <lst name="query"> > <double name="time">0.0</double> > </lst> > <lst name="facet"> > <double name="time">0.0</double> > </lst> > <lst name="facet_module"> > <double name="time">0.0</double> > </lst> > <lst name="mlt"> > <double name="time">0.0</double> > </lst> > <lst name="highlight"> > <double name="time">0.0</double> > </lst> > <lst name="stats"> > <double name="time">0.0</double> > </lst> > <lst name="expand"> > <double name="time">0.0</double> > </lst> > <lst name="debug"> > <double name="time">0.0</double> > </lst> > </lst> > <lst name="process"> > <double name="time">311.0</double> > <lst name="query"> > <double name="time">311.0</double> > </lst> > <lst name="facet"> > <double name="time">0.0</double> > </lst> > <lst name="facet_module"> > <double name="time">0.0</double> > </lst> > <lst name="mlt"> > <double name="time">0.0</double> > </lst> > <lst name="highlight"> > <double name="time">0.0</double> > </lst> > <lst name="stats"> > <double name="time">0.0</double> > </lst> > <lst name="expand"> > <double name="time">0.0</double> > </lst> > <lst name="debug"> > <double name="time">0.0</double> > </lst> > </lst> > </lst> > </lst></response> > > Thanks, > Wei >
