error summary formatter is putting ": NotImplementedError" in non-error log messages

[Matt Riedemann]

The newish error summary format stuff that went into oslo.log 3.28.0 seems to be putting ": NotImplementedError" in non-error log messages, e.g.:

http://logs.openstack.org/82/471082/1/gate/gate-novaclient-dsvm-functional-neutron-ubuntu-xenial/796acb7/logs/screen-n-cpu.txt.gz#_Jun_06_13_14_02_594292

You can see several other examples in that n-cpu log file.

The log message linked above comes from here:

https://github.com/openstack/nova/blob/e01ae75d52900d96355dfcb39ef9b136f0c0d5c4/nova/virt/libvirt/driver.py#L2520

Where there is no exception in context.

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/473611

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/473611
Committed: https://git.openstack.org/cgit/openstack/oslo.log/commit/?id=527a76e4e33a980c925315dc7700afcb060c365c
Submitter: Jenkins
Branch: master

commit 527a76e4e33a980c925315dc7700afcb060c365c
Author: Doug Hellmann <email address hidden>
Date: Mon Jun 12 18:05:31 2017 -0400

    do not add error_summary for debug log messages

    We catch exceptions and log debug messages a lot, which results in extra
    occurrences of the exception when we don't need them.

    Change-Id: I4dd3bf65fb456afc07a8fa7d0c9869bcc266b800
    Related-Bug: #1696213
    Related-Bug: #1696855
    Signed-off-by: Doug Hellmann <email address hidden>