AshinGau commented on code in PR #28223:
URL: https://github.com/apache/doris/pull/28223#discussion_r1423999146
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be/src/vec/exec/scan/scanner_context.h:
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@@ -272,6 +272,8 @@ class ScannerContext {
// Not need to protect by lock, because only one scheduler thread will
access to it.
std::mutex _scanners_lock;
std::list<VScannerSPtr> _scanners;
+ // weak pointer for _scanners, used in stop function
+ std::vector<VScannerWPtr> _scanners_ref;
Review Comment:
Because `_scanners` will be popped/pushed/released when running, and
`try_close` has no need for synchronization and consistency, only do the best
effort, so there's no need to use `_scanners` with some lock operations.
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