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Set DB:Exception on unscheduled requests

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This commit is contained in:
Alexander Gololobov 2023-11-13 14:56:14 +01:00
parent 54cc193d01
commit b49f50bf47
1 changed files with 9 additions and 0 deletions
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9
src/Storages/System/StorageSystemReplicas.cpp
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@ -28,6 +28,11 @@ namespace CurrentMetrics
namespace DB
{
namespace ErrorCodes
{
extern const int QUERY_WAS_CANCELLED;
}
/// Allows to "deduplicate" getStatus() requests for the same table: if a request for a table is already in progress
/// then the new request will return the same future as the previous one.
class StatusRequestsPool
@ -61,6 +66,10 @@ public:
~StatusRequestsPool()
{
thread_pool.wait();
/// Cancel unscheduled requests
for (auto & request : requests_to_schedule)
std::get<2>(request)->set_exception(std::make_exception_ptr(
DB::Exception(ErrorCodes::QUERY_WAS_CANCELLED, "StatusRequestsPool is destroyed")));
}
/// Make a new request or "attach" to an existing one.