On Thu, Apr 29, 2021 at 12:09 PM tanghy.f...@fujitsu.com <tanghy.f...@fujitsu.com> wrote: > > > 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 ".
Thanks for trying this out. > If anyone figure out a good solution for the test automation of this case. > Please be kind to share that with us. Thanks. +1 -- Regards, Dilip Kumar EnterpriseDB: http://www.enterprisedb.com
