Simbafa opened a new issue #8903:
URL: https://github.com/apache/shardingsphere/issues/8903
## Bug Report
### Which version of ShardingSphere did you use?
The latest version, 5.0.0-alpha
### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
ShardingSphere-Proxy
### Expected behavior
Multiple connections commit transactions correctly.
### Actual behavior
ShardingSphere-Proxy stops working, has no response for any requests.
### Reason analyze (If you can)
```
"ShardingSphere-Command-0" Id=18 RUNNABLE (in native)
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
at java.net.SocketInputStream.read(SocketInputStream.java:171)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
at
com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:101)
at
com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:144)
at
com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:174)
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:3008)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3469)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3459)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3900)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2527)
at
com.mysql.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:1281)
at
com.mysql.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:782)
at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1197)
at
com.zaxxer.hikari.pool.ProxyPreparedStatement.execute(ProxyPreparedStatement.java:44)
at
com.zaxxer.hikari.pool.HikariProxyPreparedStatement.execute(HikariProxyPreparedStatement.java)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.statement.accessor.impl.PreparedStatementAccessor.execute(PreparedStatementAccessor.java:45)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.ProxySQLExecutorCallback.executeSQL(ProxySQLExecutorCallback.java:84)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.ProxySQLExecutorCallback.executeSQL(ProxySQLExecutorCallback.java:77)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.ProxySQLExecutorCallback.executeSQL(ProxySQLExecutorCallback.java:48)
at
org.apache.shardingsphere.infra.executor.sql.resourced.jdbc.executor.impl.DefaultSQLExecutorCallback.execute0(DefaultSQLExecutorCallback.java:75)
at
org.apache.shardingsphere.infra.executor.sql.resourced.jdbc.executor.impl.DefaultSQLExecutorCallback.execute(DefaultSQLExecutorCallback.java:57)
at
org.apache.shardingsphere.infra.executor.kernel.ExecutorKernel.syncExecute(ExecutorKernel.java:99)
at
org.apache.shardingsphere.infra.executor.kernel.ExecutorKernel.serialExecute(ExecutorKernel.java:84)
at
org.apache.shardingsphere.infra.executor.kernel.ExecutorKernel.execute(ExecutorKernel.java:78)
at
org.apache.shardingsphere.infra.executor.sql.resourced.jdbc.executor.SQLExecutor.execute(SQLExecutor.java:65)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.executeWithManagedResource(JDBCExecuteEngine.java:130)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.execute(JDBCExecuteEngine.java:123)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.execute(JDBCExecuteEngine.java:103)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.JDBCDatabaseCommunicationEngine.doExecute(JDBCDatabaseCommunicationEngine.java:93)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.JDBCDatabaseCommunicationEngine.execute(JDBCDatabaseCommunicationEngine.java:79)
at
org.apache.shardingsphere.proxy.frontend.mysql.command.query.binary.execute.MySQLComStmtExecuteExecutor.execute(MySQLComStmtExecuteExecutor.java:71)
at
org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.executeCommand(CommandExecutorTask.java:100)
at
org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.run(CommandExecutorTask.java:76)
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)
```
### Steps to reproduce the behavior, such as: SQL to execute, sharding rule
configuration, when exception occur etc.
- 1. modify conf/server.yaml
- set acceptor.size: 1
- 2. create test app
- create n threads , where n>acceptor.size
- if n<=acceptor.size, ShardingSphere works well.
- In the threads, start transaction, do some things, and then commit
- conn.setAutoCommit(false);
- select * from table1 where fid=1 for update
- update table1 set fint=fint+1 where fid=1
- conn.commit()
The most important thing is that the threads number must bigger than the
acceptor.size.
### Example codes for reproduce this issue (such as a github link).
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