On Sun, Feb 10, 2019 at 07:11:22PM +0300, Sergei Kornilov wrote: > > I ran overnight with this patch, but all parallel processes ended up stuck > > in > > the style of bug#15585. So that's either not the root cause, or there's a > > 2nd > > issue. > > Maybe i missed something in this discussion, but you can reproduce bug#15585? > How? With this testcase: > https://www.postgresql.org/message-id/CAEepm%3D1MvOE-Sfv1chudx5KEmw_qHYrj8F9Og_WmdBRhXSQ%2B%2Bw%40mail.gmail.com > ?
By running the queued_alters query multiple times in a loop: https://www.postgresql.org/message-id/20181231221734.GB25379%40telsasoft.com I'm able to trigger dsa "ERROR"s with that query on a newly initdb cluster with only that table. But I think some servers are more likely to hit it than others. I've only tripped on 15585 twice, and only while trying to trigger other DSA bugs (the working hypothesis is that bug is 2ndary issue which happens after hitting some other bug). And not consistently or quickly. Justin
