CanalAdapter1.1.5版本问题收集

1. canal adapter异常：Not found the mapping info of index: xxx
2. canal adapter同步异常：field name is null or empty
3. canal adapter同步问题：部分字段数据没有同步
4. CanalAdapter启动异常：unknown setting [mode] please check that any required plugins are installed, or ...
5. 本地源码启动异常：class com.alibaba.druid.pool.DruidDataSource  cannot be cast to  class com.alibaba.druid.pool.DruidDataSource 
6. canal源码本地运行异常：修改配置无效
7. canal adapter没有同步成功无异常
8. IllegalArgumentException: cannot write xcontent for unknown value of type class java.sql.Timestamp