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handle empty or non-existing page temperatures better

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This commit is contained in:
Ivan Skytte Jørgensen
2016-12-19 12:58:21 +01:00
parent 4e6080d28c
commit add175c973
1 changed files with 3 additions and 4 deletions

7
PageTemperatureRegistry.cpp

@ -68,10 +68,7 @@ bool PageTemperatureRegistry::load() {
//There is no obvious correct value.
default_temperature = (min_temperature+max_temperature)/2;
if(min_temperature!=max_temperature)
temperature_range_for_scaling = max_temperature-min_temperature;
else
temperature_range_for_scaling = min_temperature;
temperature_range_for_scaling = max_temperature-min_temperature;
return true;
}
@ -98,6 +95,8 @@ unsigned PageTemperatureRegistry::query_page_temperature_internal(uint64_t docid
double PageTemperatureRegistry::query_page_temperature(uint64_t docid) const {
if(hash_table_size==0)
return 1.0;
unsigned temperature_26bit = query_page_temperature_internal(docid);
//Then scale to a number in the rangte [0..1]
//It is a bit annoying to do this computation for each lookup but it saves memory