[GitHub] [shardingsphere] TeslaCN opened a new issue, #19340: MySQL client blocked after OOM occurred in command thread

Mon, 18 Jul 2022 17:23:42 -0700 


TeslaCN opened a new issue, #19340:
URL: https://github.com/apache/shardingsphere/issues/19340

   ## Bug Report
   
   ### Which version of ShardingSphere did you use?
   
   master - 7ccb351cbe7e3606c11f41e42e231acfb11209b8
   
   ### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
   
   ShardingSphere-Proxy
   
   ### Expected behavior
   
   Do something to let client know error occurred.
   
   ### Actual behavior
   
   ```
   Exception in thread "ShardingSphere-Command-0" java.lang.OutOfMemoryError: 
GC overhead limit exceeded
   ```
   
   Client blocked and query could not be aborted.
   
   
![image](https://user-images.githubusercontent.com/20503072/179638267-763bc6bf-c23c-4668-b83d-0e4bf8ad2de5.png)
   
   ### Steps to reproduce the behavior, such as: SQL to execute, sharding rule 
configuration, when exception occur etc.
   
   Just execute some `select *` from table with huge rows.
   


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