Dear Wang, > Some codes were added in ReorderBufferProcessTXN() for treating DDL,
My mailer went wrong, so I'll put comments again. Sorry. Some codes were added in ReorderBufferProcessTXN() for treating DDL, but I doubted updating accept_writes is needed. IMU, the parameter is read by OutputPluginPrepareWrite() in order align messages. They should have a header - like 'w' - before their body. But here only a keepalive message is sent, no meaningful changes, so I think it might be not needed. I commented out the line and tested like you did [1], and no timeout and errors were found. Do you have any reasons for that? https://www.postgresql.org/message-id/OS3PR01MB6275A95FD44DC6C46058EA389E3B9%40OS3PR01MB6275.jpnprd01.prod.outlook.com Best Regards, Hayato Kuroda FUJITSU LIMITED