Improvements to swift store retry behaviour

Registered by Louis Taylor on 2015-01-08

This adds an option to glance_store to wait for a configurable amount of time between retrying an image download from swift (swift_store_retry_get_wait = 1), and an option to enable exponential backoff (swift_store_retry_get_exponential_wait = True). It also changes the default behaviour to enable retries (swift_store_retry_get_count = 5)

Blueprint information

Status:
Started
Approver:
Nikhil Komawar
Priority:
Medium
Drafter:
Louis Taylor
Direction:
Needs approval
Assignee:
Louis Taylor
Definition:
Review
Series goal:
None
Implementation:
Needs Code Review
Milestone target:
milestone icon next
Started by
Nikhil Komawar

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Gerrit topic: https://review.openstack.org/#q,topic:bp/swift-retry-wait,n,z

Addressed by: https://review.openstack.org/141803
    Add option to wait between swift retries

Addressed by: https://review.openstack.org/145906
    Add new swift store options to default api config

Addressed by: https://review.openstack.org/145907
    Default number of swift download retries to 5

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2014-01-16 (nikhil_k): Only the documentation changes go in the glance repo, rest of it is a glance_store change. Tentatively marking it for k2. If we have the glance_store changes merged and a release is scheduled before k2, this will be part of k2 else we should have it in k3.

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