ovsdb error: "attempting to write bad value to column other_config"

[Thomas Morin]

We see this error in networking-bgpvpn tempest test runs:

2016-11-16 17:13:51.031 20988 DEBUG neutron.agent.ovsdb.impl_idl [-] Running txn command(idx=0): DbSetCommand(table=Port, col_values=(('other_config', {'tag': 4}),), record=qvo655bfaa6-18) do_commit /opt/stack/new/neutron/neutron/agent/ovsdb/impl_idl.py:100
2016-11-16 17:13:51.031 20988 ERROR neutron.agent.ovsdb.native.vlog [-] attempting to write bad value to column other_config (ovsdb error: expected string, got <type 'int'>)
2016-11-16 17:13:51.031 20988 DEBUG neutron.agent.ovsdb.impl_idl [-] Transaction caused no change do_commit /opt/stack/new/neutron/neutron/agent/ovsdb/impl_idl.py:127

Nothing obviously points at something related or specific to networking-bgpvpn.

Full logs:
http://logs.openstack.org/67/396967/4/check/gate-tempest-dsvm-networking-bgpvpn-bagpipe/bf56a53/logs/screen-q-agt.txt.gz?level=DEBUG#_2016-11-16_17_13_51_031

[Terry Wilson (otherwiseguy)]

This is a duplicate of a bug that there is already a fix for. You can't store an int in other_config.

https://launchpad.net/bugs/1630920
https://review.openstack.org/#/c/383540/

[Victor Morales (electrocucaracha)]

It seems to fail detecting a valid type for other_config column. I'm wondering why it's not considering the options[1]

[1] https://github.com/openstack/neutron/blob/master/neutron/agent/ovsdb/native/commands.py#L200-L212

[Terry Wilson (otherwiseguy)]

There is no type detection/coercion. The column is of type map {string: string} and that is it.