yangzhg commented on a change in pull request #6916:
URL: https://github.com/apache/incubator-doris/pull/6916#discussion_r739921631
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File path: be/src/util/brpc_stub_cache.h
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@@ -34,25 +34,32 @@ class BrpcStubCache {
BrpcStubCache();
virtual ~BrpcStubCache();
- virtual PBackendService_Stub* get_stub(const butil::EndPoint& endpoint) {
- std::lock_guard<SpinLock> l(_lock);
+ virtual std::shared_ptr<PBackendService_Stub> get_stub(const
butil::EndPoint& endpoint) {
+ std::lock_guard<std::mutex> l(_mutex);
auto stub_ptr = _stub_map.seek(endpoint);
if (stub_ptr != nullptr) {
- return *stub_ptr;
+ if (available(*stub_ptr, endpoint)) {
Review comment:
Checking availability is a low-cost check. Checking and refreshing
before obtaining the stub is more appropriate than handling it after failure.
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