strongduanmu commented on issue #13429:
URL:
https://github.com/apache/shardingsphere/issues/13429#issuecomment-958702131
After I fixed the parsing exception of the kill query statement, I used
`crtl + c` to terminate the current query, and the following exception occurred.
```
[INFO ] 2021-11-03 15:15:28.687 [Connection-2-ThreadExecutor]
ShardingSphere-SQL - Logic SQL: KILL QUERY 1
[INFO ] 2021-11-03 15:15:28.687 [Connection-2-ThreadExecutor]
ShardingSphere-SQL - SQLStatement: MySQLKillStatement()
[INFO ] 2021-11-03 15:15:28.687 [Connection-2-ThreadExecutor]
ShardingSphere-SQL - Actual SQL: ds_0 ::: KILL QUERY 1
[ERROR] 2021-11-03 15:15:28.734 [Connection-2-ThreadExecutor]
o.a.s.p.f.c.CommandExecutorTask - Exception occur:
java.sql.SQLException: Unknown thread id: 1
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:965)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3978)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3914)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2530)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2683)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2491)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2449)
at com.mysql.jdbc.StatementImpl.executeInternal(StatementImpl.java:845)
at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:939)
at
com.zaxxer.hikari.pool.ProxyStatement.execute(ProxyStatement.java:103)
at
com.zaxxer.hikari.pool.HikariProxyStatement.execute(HikariProxyStatement.java)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.executor.callback.impl.ProxyStatementExecutorCallback.execute(ProxyStatementExecutorCallback.java:40)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.executor.callback.ProxyJDBCExecutorCallback.executeSQL(ProxyJDBCExecutorCallback.java:73)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.executor.callback.ProxyJDBCExecutorCallback.executeSQL(ProxyJDBCExecutorCallback.java:66)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.executor.callback.ProxyJDBCExecutorCallback.executeSQL(ProxyJDBCExecutorCallback.java:44)
at
org.apache.shardingsphere.infra.executor.sql.execute.engine.driver.jdbc.JDBCExecutorCallback.execute(JDBCExecutorCallback.java:85)
at
org.apache.shardingsphere.infra.executor.sql.execute.engine.driver.jdbc.JDBCExecutorCallback.execute(JDBCExecutorCallback.java:64)
at
org.apache.shardingsphere.infra.executor.kernel.ExecutorEngine.syncExecute(ExecutorEngine.java:101)
at
org.apache.shardingsphere.infra.executor.kernel.ExecutorEngine.parallelExecute(ExecutorEngine.java:97)
at
org.apache.shardingsphere.infra.executor.kernel.ExecutorEngine.execute(ExecutorEngine.java:82)
at
org.apache.shardingsphere.infra.executor.sql.execute.engine.driver.jdbc.JDBCExecutor.execute(JDBCExecutor.java:65)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.executor.ProxyJDBCExecutor.execute(ProxyJDBCExecutor.java:71)
at
org.apache.shardingsphere.proxy.backend.communication.ProxySQLExecutor.useDriverToExecute(ProxySQLExecutor.java:185)
at
org.apache.shardingsphere.proxy.backend.communication.ProxySQLExecutor.execute(ProxySQLExecutor.java:138)
at
org.apache.shardingsphere.proxy.backend.communication.ProxySQLExecutor.execute(ProxySQLExecutor.java:127)
at
org.apache.shardingsphere.proxy.backend.communication.ProxyLockEngine.doExecute(ProxyLockEngine.java:103)
at
org.apache.shardingsphere.proxy.backend.communication.ProxyLockEngine.execute(ProxyLockEngine.java:81)
at
org.apache.shardingsphere.proxy.backend.communication.DatabaseCommunicationEngine.execute(DatabaseCommunicationEngine.java:126)
at
org.apache.shardingsphere.proxy.backend.text.data.impl.UnicastDatabaseBackendHandler.execute(UnicastDatabaseBackendHandler.java:61)
at
org.apache.shardingsphere.proxy.frontend.mysql.command.query.text.query.MySQLComQueryPacketExecutor.execute(MySQLComQueryPacketExecutor.java:61)
at
org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.executeCommand(CommandExecutorTask.java:99)
at
org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.run(CommandExecutorTask.java:72)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
```
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