branch-4.0: [fix](runtime) Clear query_ctx_map_delay_delete in FragmentMgr::stop() to avoid UB #60718#60728
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yiguolei merged 1 commit intobranch-4.0from Feb 14, 2026
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…) to avoid UB (#60718) Related PR: #59262 Problem Summary: During BE graceful shutdown, cancel_worker cancels running queries via _get_all_running_queries_from_fe, so clearing _query_ctx_map_delay_delete here won't cause RF consumer to hang. Without this clear, QueryContext destruction in ~FragmentMgr() may attempt to remove itself from _query_ctx_map_delay_delete while the map is being destructed, causing undefined behavior. stack: ``` ~FragmentMgr ~_query_ctx_map_delay_delete ~QueryContext FragmentMgr::remove_query_context _query_ctx_map_delay_delete.erase()⚠️ call function of object that is being destructed ```
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yiguolei
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Feb 14, 2026
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Cherry-picked from #60718