trueeyu

### Steps to reproduce the behavior (Required) ``` mysql> show create table t2; +-------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Table | Create Table | +-------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | t2 | CREATE TABLE `t2` ( `c1` int(11)...

[WIP] check mem leak for dewu

1

## What type of PR is this： - [ ] BugFix - [ ] Feature - [ ] Enhancement - [ ] Refactor - [ ] UT - [ ]...

## What type of PR is this： - [ ] BugFix - [ ] Feature - [ ] Enhancement - [ ] Refactor - [ ] UT - [ ]...

Lz4compress may alloc exceed memory

1

## Enhancement ``` size_t max_compressed_len(size_t len) const override { return std::max(LZ4F_compressBound(len, &_s_preferences), LZ4F_compressFrameBound(len, &_s_preferences)); } ``` for lz4 sream compress, no need to alloc more memory of LZ4F_compressBound(len, &_s_preferences) size....

Compaciton of pimaryKey model will use lot of memory if tablet have large many rows

1

## Enhancement tcmalloc: large alloc 1648500736 bytes == 0x78e9ee000 @ 0x4e93709 0x50113dc 0x1ce55e8 0x4f61c75 0x1bfe3ed 0x2e5250c 0x2e53689 0x2e3f06a 0x1c66c44 0x1c67e52 0x1c61081 0x1c5ee56 0x367c02e 0x3672a97 0x3673943 0x371a68e 0x37bf3ff 0x37b3971 terminate called...

Prevent Space, Lpad, Rpad functions from generating strings larger than 4G

1

## Enhancement Prevent Space, Lpad, Rpad functions from generating strings larger than 4G

The send node of the load will consume too much sending memory when cluster is large

1

## Enhancement When the scale of the cluster is relatively large, the send node of the load will consume too much sending memory

print log in lock may affect the performance of tablet access

1

## Enhancement https://github.com/StarRocks/starrocks/blob/bc87d42204d689291b210e36a731f02e91964795/be/src/storage/tablet.cpp#L415-L458 print log (delete expire rowset in table) in lock may affect the performance of Tablet access

Add one task scheduling queue of solve the problem of can't exit quickly

1

## Enhancement ``` void* StorageEngine::_fd_cache_clean_callback(void* arg) { #ifdef GOOGLE_PROFILER ProfilerRegisterThread(); #endif while (!_bg_worker_stopped.load(std::memory_order_consume)) { int32_t interval = config::file_descriptor_cache_clean_interval; if (interval

## Why I'm doing: ## What I'm doing: Fixes #issue ## What type of PR is this: - [ ] BugFix - [ ] Feature - [ ] Enhancement -...