kaijchen opened a new pull request, #23019:
URL: https://github.com/apache/doris/pull/23019
## Proposed changes
Use smart pointer to manage MemTableWriters in MemTableMemoryLimiter.
We no longer need to deregister writers in MemTableMemoryLimiter.
### Test
The log is changed to VLOG_DEBUG in the final version.
```
I0815 20:44:14.725538 1158747 vtablet_sink.cpp:1584] finished to close olap
table sink. load_id=db481b50e1a84028-8216c3dab1a7c0b3, txn_id=16020, node add
batch time(ms)/wait execution time(ms)/close time(ms)/num:
{10039:(570)(0)(674)(2)} {10040:(389)(0)(528)(2)} {10041:(491)(0)(528)(2)}
I0815 20:44:14.729375 1158747 query_context.h:69] Deregister query/load
memory tracker, queryId=db481b50e1a84028-8216c3dab1a7c0b3, Limit=2.00 GB,
CurrUsed=32.84 MB, PeakUsed=379.68 MB
I0815 20:44:14.795511 1158496 memtable_memory_limiter.cpp:226] refreshed
mem_tracker, num writers: 2304
I0815 20:44:14.895648 1158496 memtable_memory_limiter.cpp:226] refreshed
mem_tracker, num writers: 2304
I0815 20:44:14.995826 1158496 memtable_memory_limiter.cpp:226] refreshed
mem_tracker, num writers: 2304
I0815 20:44:15.095990 1158496 memtable_memory_limiter.cpp:226] refreshed
mem_tracker, num writers: 2304
I0815 20:44:15.196146 1158496 memtable_memory_limiter.cpp:226] refreshed
mem_tracker, num writers: 2304
I0815 20:44:15.296309 1158496 memtable_memory_limiter.cpp:226] refreshed
mem_tracker, num writers: 2304
I0815 20:44:15.396457 1158496 memtable_memory_limiter.cpp:226] refreshed
mem_tracker, num writers: 2304
I0815 20:44:15.407001 1161561 load_channel.cpp:49] load channel removed
load_id=db481b50e1a84028-8216c3dab1a7c0b3, is high priority=0,
sender_ip=10.16.10.7
I0815 20:44:15.496557 1158496 memtable_memory_limiter.cpp:226] refreshed
mem_tracker, num writers: 0
```
## Further comments
If this is a relatively large or complex change, kick off the discussion at
[d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you
chose the solution you did and what alternatives you considered, etc...
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