dongjoon-hyun commented on code in PR #2422:
URL: https://github.com/apache/orc/pull/2422#discussion_r2383899102
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c++/src/Timezone.cc:
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@@ -734,14 +750,26 @@ namespace orc {
* Get a timezone by absolute filename.
* Results are cached.
*/
- const Timezone& getTimezoneByFilename(const std::string& filename) {
+ const Timezone& getTimezoneByFilename(const std::string& dir, const
std::string& zone) {
+ std::string filename(dir);
+ filename += "/";
+ filename += zone;
// ORC-110
std::lock_guard<std::mutex> timezone_lock(timezone_mutex);
std::map<std::string, std::shared_ptr<Timezone> >::iterator itr =
timezoneCache.find(filename);
if (itr != timezoneCache.end()) {
return *(itr->second).get();
}
- timezoneCache[filename] = std::make_shared<LazyTimezone>(filename);
+ auto it = TZ_ALIASES.find(zone);
Review Comment:
This overhead occurs once per `zone` because we fill `timezoneCache` only
one time and reuse it forever.
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