Connection pool is full when boot an instance

[Lan Qi song]

When I tried to boot an instance on an host which already have lots of containers (> 500), and there are lots of following logs in nova-compute.log:

2015-09-15 04:05:03.681 8975 WARNING requests.packages.urllib3.connectionpool [-] Connection pool is full, discarding connection: localhost

This is because currently each time we boot an instance and attach the interface , novadocker will inspect all the instance to match the correct container( By host name), that would take too much time and waste too much connection.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/225623
Committed: https://git.openstack.org/cgit/stackforge/nova-docker/commit/?id=33643b24a1090efb26d968e318f3f7878a7e958a
Submitter: Jenkins
Branch: master

commit 33643b24a1090efb26d968e318f3f7878a7e958a
Author: lqslan <lqslan.cn.ibm.com>
Date: Mon Sep 21 10:41:57 2015 +0000

    Find container by uuid instead of by name

    Currently, when boot a container, novadocker will create the container firstly,
    then attach the interface, this step novadocker will loop to inspect all the
    containers to find the right one. This takes too much time and docker connections.

    This patch use find container by uuid instead of by name, this way would save much
    time and connections.

    Change-Id: I1cdf672e99b269b1f7e18d1a73a6557c7eb0540a
    Closes-Bug: #1497949

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/227112

[OpenStack Infra (hudson-openstack)]

Change abandoned by Lan Qi Song (<email address hidden>) on branch: master
Review: https://review.openstack.org/227112
Reason: No need this change now.