[Bug]: create accounts 50 concurrent number test mo oom

[heni02]

Is there an existing issue for the same bug?

• I have checked the existing issues.

Branch Name

2.0-dev

Commit ID

01b5a6c

Other Environment Information

- Hardware parameters:
- OS type:
- Others:

Actual Behavior

测试场景：create account 并发50创建100000个租户，运行十分钟后mo oom，运行期间内存观察一直持续增长状态
oom时间15:22:39

show accounts;

15:20 profile：
LOG_7c4dccb4-4d3c-41f8-b482-5251dc7a41bf_malloc_0193ddca-49cc-760d-b936-f1709f1e7682.gz
LOG_7c4dccb4-4d3c-41f8-b482-5251dc7a41bf_heap_0193ddca-4134-7762-8720-bfd83159d903.gz
LOG_7c4dccb4-4d3c-41f8-b482-5251dc7a41bf_cpu_0193ddca-8608-77d9-a599-a7cd863e3fd7.gz

Expected Behavior

No response

Steps to Reproduce

create account 并发50创建100000个租户（如需要联系我sh脚本）

Additional information

No response

[ck89119]

从profile文件可以看出 lockTableAllocator.getLockTablesLocked 这个函数占用了大量的内存：

对应代码：