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MyCATApache / Mycat-Server

GNU General Public License v2.0
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如果不开启useOffHeapForMerge=1 查询返回数据量为实际个数*物理表个数 #2912

Closed xiaoliu10 closed 2 years ago

xiaoliu10 commented 2 years ago

1、bug描述 简单清晰描述下bug现象. 如题， 如果设置这个参数，则线上经常cpu爆满

2、版本号(非常重要) v 1.6..

3、相关表的配置信息 schema.xml (需包含表的配置信息，mysql的连接驱动是JDBC还是native方式) rule.xml (涉及到的路由函数) server.xml(可选)

4、操作步骤

  1. '...'
  2. '....'
  3. ...

5、期望结果 A clear and concise description of what you expected to happen.

6、实际结果 A clear and concise description of what actually happened.

7、额外信息 Add any other context about the problem here.

junwen12221 commented 2 years ago

https://github.com/MyCATApache/Mycat2/issues/686