[optimize](remote) Optimize cache reader use a pre-created buffer when downloading the cache (#12165)

* optimize cache reader * add description for config * optimize cache reader * optimize cache reader
2022-08-31 10:15:40 +08:00
parent f0cde35ea6
commit 254cb321b9
10 changed files with 151 additions and 71 deletions
--- a/be/src/runtime/exec_env_init.cpp
+++ b/be/src/runtime/exec_env_init.cpp
@ -137,6 +137,7 @@ Status ExecEnv::_init(const std::vector<StorePath>& store_paths) {
            .set_max_queue_size(config::download_cache_thread_pool_queue_size)
            .build(&_download_cache_thread_pool);
    set_serial_download_cache_thread_token();
+    init_download_cache_buf();

    _scanner_scheduler = new doris::vectorized::ScannerScheduler();