kangkaisen opened a new issue #3530:
URL: https://github.com/apache/incubator-doris/issues/3530
**Describe the bug**
Run any group by query in Debug mode BE
```
F0508 18:39:32.956269 32493 reservation_tracker.cc:286] Check failed:
tracker->mem_tracker_ == nullptr || !tracker->mem_tracker_->has_limit()
@ 0x3c0fe81 google::DumpStackTraceAndExit()
@ 0x3c06e5d google::LogMessage::Fail()
@ 0x3c08ce4 google::LogMessage::SendToLog()
@ 0x3c06984 google::LogMessage::Flush()
@ 0x3c096e9 google::LogMessageFatal::~LogMessageFatal()
@ 0x1d82380 doris::ReservationTracker::TransferReservationTo()
@ 0x1d59c9c
doris::BufferPool::ClientHandle::TransferReservationFrom()
@ 0x1ef11c6 doris::InitialReservations::Claim()
@ 0x2cfe826 doris::ExecNode::claim_buffer_reservation()
@ 0x30a2f4b doris::PartitionedAggregationNode::open()
@ 0x1e059fc doris::PlanFragmentExecutor::open_internal()
@ 0x1e07e05 doris::PlanFragmentExecutor::open()
@ 0x1c4a903 doris::FragmentExecState::execute()
@ 0x1c5068d doris::FragmentMgr::exec_actual()
@ 0x1c6a6a1
boost::detail::function::void_function_obj_invoker0<>::invoke()
@ 0x1b959de doris::PriorityThreadPool::work_thread()
@ 0x1b75c69 boost::detail::thread_data<>::run()
@ 0x3bb91dd thread_proxy
@ 0x7fb3a2f5de65 start_thread
@ 0x7fb3a236288d __clone
```
This DCHECK is not reasonable. Because when query the limit for mem_tracker
is `2147483648`.
We set memory limit in:
```
// NOTE: this MemTracker only for olap
_mem_tracker.reset(
new MemTracker(bytes_limit, "fragment mem-limit",
_exec_env->process_mem_tracker()));
_runtime_state->set_fragment_mem_tracker(_mem_tracker.get());
```
So, we should remove this DCHECK.
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