harrycong233

### Search before asking - [X] I had searched in the [issues](https://github.com/DTStack/chunjun/issues) and found no similar issues. ### What happened mysql数据同步到达梦8 当wirteMode为update的时候执行job报错，这边需要覆盖写， 目的表如果没有数据使用insert模式没有问题 ### What you expected to happen java.sql.BatchUpdateException:...