Re: WIP/PoC for parallel backup

On Mon, Mar 16, 2020 at 11:08 AM Rajkumar Raghuwanshi <rajkumar.raghuwanshi@enterprisedb.com> wrote:

Thanks for the patches.

I have verified reported issues with new patches, issues are fixed now. 

I got another observation where If a new slot name given without -C option, it leads to server crash error.

[edb@localhost bin]$ ./pg_basebackup -p 5432 -j 4 -D /tmp/bkp --slot test_bkp_slot

pg_basebackup: error: could not send replication command "START_REPLICATION": ERROR:  replication slot "test_bkp_slot" does not exist

pg_basebackup: error: could not list backup files: server closed the connection unexpectedly

This probably means the server terminated abnormally

before or while processing the request.

pg_basebackup: removing data directory "/tmp/bkp"

It seems to be an expected behavior. The START_BACKUP command has been executed, and

pg_basebackup tries to start a WAL streaming process with a non-existent slot, which results in

an error. So the backup is aborted while terminating all other processes.

--

Asif Rehman

Highgo Software (Canada/China/Pakistan)
URL : www.highgo.ca