[openstack-dev] [ceilometer][all] persisting dump tables after migration

Gordon Chung chungg at ca.ibm.com
Tue Mar 25 16:22:20 UTC 2014

in ceilometer we have a bug regarding residual dump tables left after 
migration: https://bugs.launchpad.net/ceilometer/+bug/1259724

basically, in a few prior migrations, when adding missing constraints, a 
dump table was create to backup values which didn't fit into the new 
constraints. i raised the initial bug because i believe there is very 
little value to these tables as i would expect any administrator capturing 
data of some importance would backup their data before any migration to 
begin with.  i noticed in Nova, they also clean up their dump tables but i 
wanted to raise this on mailing list so that everyone is aware of the 
issue before i add a patch which blows away these dump tables. :)

i'd be interested if anyone actually finds value in having these dump 
tables persist just so we can see if your use case can be handle without 
the tables.

for reference, the dump tables are created in:

gordon chung
openstack, ibm software standards
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