ERROR: Object HEAD returning 503 for 404
Bug #1857909 reported by
clayg
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
OpenStack Object Storage (swift) |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
We've observed 404s from primaries resulting in a 503 response to the client if enough handoff disks are unmounted, resulting in log lines similar to:
proxy-server ERROR: Object HEAD returning 503 for [404, 404, 404, 507, 507, 507, 507, 507, 507] (txn: tx1c6f6e2b33394
The increased probability of a 503 response is related to a series of changes leading up to https:/
Because best_response uses "number of responses" to calculate majority/quorum (instead of replica count) and no backend handoff 404 responses are collected the handoff 507s can leak and are more likely to "overwhelm" the primary 404s.
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A solution might look like https:/ /review. opendev. org/#/c/ 700239/