gavinchou commented on code in PR #50555:
URL: https://github.com/apache/doris/pull/50555#discussion_r2072505625
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be/src/io/cache/block_file_cache.cpp:
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@@ -2077,6 +2077,17 @@ std::string BlockFileCache::clear_file_cache_directly() {
int64_t normal_queue_size = _normal_queue.get_elements_num(cache_lock);
int64_t disposible_queue_size =
_disposable_queue.get_elements_num(cache_lock);
int64_t ttl_queue_size = _ttl_queue.get_elements_num(cache_lock);
+
+ if (config::clear_fd_after_clear_file_cache) {
Review Comment:
it seems there is no performance problem, line 2069 `auto s =
_storage->clear(clear_msg);` is blocking and time-consuming job before removing
FDs.
to avoid too many knobs, keep it simple if the behavior is determined.
we have too many knobs for file cache, too many.
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