HappenLee commented on a change in pull request #5214:
URL: https://github.com/apache/incubator-doris/pull/5214#discussion_r554584621
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File path: be/src/olap/olap_server.cpp
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@@ -39,23 +39,28 @@ namespace doris {
// number of running SCHEMA-CHANGE threads
volatile uint32_t g_schema_change_active_threads = 0;
+// background threads is detached thread, but they will depend on 'this'
pointer.
+// so we should pass a shared_from_this ptr to make sure that the pointer is
not destroyed
+// before the thread exits
Status StorageEngine::start_bg_threads() {
RETURN_IF_ERROR(Thread::create(
"StorageEngine", "unused_rowset_monitor_thread",
- [this]() { this->_unused_rowset_monitor_thread_callback(); },
+ [this]() {
this->shared_from_this()->_unused_rowset_monitor_thread_callback(); },
Review comment:
Maybe we should not pass this, but the shared_ptr of storage engine
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