limited commented on issue #1970: Not possible to disable retry for MSO URL: https://github.com/apache/incubator-trafficcontrol/issues/1970#issuecomment-371191645 I see two issues that @sandmanahoy is reporting 1) Traffic Ops always places a `parent_retry` token into `parent.config` because the default value is set to `both`[1]. We would like to be able to remove the presence of `parent_retry`. Removing `parent_retry` uses the traffic server default of dead server errors (timeouts) as opposed to `both` which configures traffic server to retry on simple errors (404s), unavailable server errors (503s) and dead server errors. This should definitely be fixed in 2.3 2) This behavior was unexpectedly changed during an upgrade (i.e. TO started inserting `parent_retry=both` when this option was previously missing). Need to discuss if we want to fix the migration (probably not since I don't think anyone is still using 2.0) or just release note this caveat as part of the bugfix. [1] https://github.com/apache/incubator-trafficcontrol/blob/e2c498f2f6125c46d9c6222e79aec0439786725e/traffic_ops/app/lib/API/Configs/ApacheTrafficServer.pm#L2327
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