Comment 3 for bug 1282925

Reviewed: https://review.openstack.org/75343
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=64acc3bd63846a6e7da8d1136f946372c698cb76
Submitter: Jenkins
Branch: master

commit 64acc3bd63846a6e7da8d1136f946372c698cb76
Author: Akihiro Motoki <email address hidden>
Date: Fri Feb 21 17:42:46 2014 +0900

    nec plugin: Avoid long transaction in delete_ports

    db_plugin.delete_ports() can lead to long transaction
    if plugin.deleete_port talks with external system.
    This commit removes a transaction in delete_ports and
    allows NEC plugin to use more granular db transactions
    in delete_port. It greatly helps db race conditions and
    timeouts in delete_port operations.

    To avoid to impact other plugins/drivers by changing
    db_plugin.delete_ports directly and to land this patch soon,
    this commit overrides delete_ports() in NEC plugin.
    Further disssion on transaction in delete_ports will be
    discussed under bug 1282925.

    Closes-Bug: #1282922
    Related-Bug: #1282925

    Change-Id: I2c00694ad34eb2058bf7a0ff1c920ceded327d43