show create table issue

[wavelet123]

• I have searched the issues of this repository and believe that this is not a duplicate.
• I have checked the FAQ of this repository and believe that this is not a duplicate.

environment

• canal version
  canal-1.1.5
• mysql version
  AliSQL 8.0.36

Issue Description

canal连接MySQL后会show create table,MySQL实例有4000+表，导致登录过程卡顿20分钟，这个show create table 是必须的吗？

Steps to reproduce

Expected behaviour

Actual behaviour

If there is an exception, please attach the exception trace:

Just put your stack trace here!