On Thursday, April 29, 2021 3:18 PM, Dilip Kumar <dilipbal...@gmail.com> wrote
>I tried to think about how to write a test case for this scenario, but >I think it will not be possible to generate an automated test case for this. >Basically, we need 2 concurrent transactions and out of that, >we need one transaction which just has processed only one change i.e >XLOG_HEAP2_NEW_CID and another transaction should overflow the logical >decoding work mem, so that we select the wrong transaction which >doesn't have the base snapshot. But how to control that the >transaction which is performing the DDL just write the >XLOG_HEAP2_NEW_CID wal and before it writes any other WAL we should >get the WAl from other transaction which overflows the buffer. Thanks for your updating. Actually, I tried to make the automated test for the problem, too. But made no process on this. Agreed on your opinion " not be possible to generate an automated test case for this ". If anyone figure out a good solution for the test automation of this case. Please be kind to share that with us. Thanks. Regards, Tang
