[Postgres-xl-developers] Recovering GTM after failure

Adrian Nicoara anicoara at uwaterloo.ca
Thu Jan 22 09:38:14 PST 2015


Hello,

I tried to find a description of what happens when the GTM fails. So
far, I could only find:

http://www.pgcon.org/2012/schedule/attachments/224_Postgres-XC_tutorial.pdf

slide 95, that describes the requirement of a standby GTM for
failover, with synchronous changes done among the GTM processes.
In the absence of such a process, does the entire cluster have to be
rebooted? I tried to reason out how the running transaction set, and
new GXID is recovered from the data nodes/coordinators, but couldn't
puzzle it out.

Thank you for any guidance,
Adrian




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