[openstack-dev] [neutron][stable] Bug 1414218 is not fixed on in neutron stable/juno branch

Ma, Stephen B. stephen.ma at hp.com
Thu Apr 16 22:21:14 UTC 2015

Two weeks ago, the patch https://review.openstack.org/#/c/164329/ was merged to stable/juno. This patch fixes bug  https://launchpad.net/bugs/1414218 on the stable/juno branch.  This patch removed LOG.debug statements from the for-loop of method _output_hosts_file() in file neutron/agent/Linux/dhcp.py.  Without the LOG.debug statements in the for-loop, the performance of dhcp agent updates improves significantly.

As it stands currently, neutron on the stable/juno branch behaves as if https://review.openstack.org/#/c/164329/ was never merged. The merge of patch  https://review.openstack.org/#/c/153181 puts some LOG.debug statements in the for-loop of the same function.  The net result is the unintentional revert of patch https://review.openstack.org/#/c/164329/.

According to review.openstack.org, the patch https://review.openstack.org/#/c/153181 merged on April 1st at 1:56 pm.   Patch https://review.openstack.org/#/c/164329/ merged on the same day at 2:21 pm.   After 153181 merged, the review of 164329 should have triggered a merge conflict error which would have compelled the owner to do a rebase. The merge conflict wasn't reported and the patches merged anyway.  Does this point to a problem with the Jenkins CI system?

Note that this is only a problem on the neutron stable/juno branch.  I filed bug https://bugs.launchpad.net/neutron/+bug/1445202 to have the LOG.debug statements taken out.  The review is https://review.hpcloud.net/#/c/174596.

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