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https://issues.apache.org/jira/browse/TS-2931?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Phil Sorber updated TS-2931:
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Backport to Version: (was: 4.2.2)
> plugin metrics fail after a crash
> ---------------------------------
>
> Key: TS-2931
> URL: https://issues.apache.org/jira/browse/TS-2931
> Project: Traffic Server
> Issue Type: Bug
> Components: Plugins, TS API
> Reporter: James Peach
> Assignee: James Peach
> Fix For: 4.2.2, 5.1.0
>
>
> If a plugin uses {{TSStatFindName}} followed by {{TSStatCreate}},
> {{TSStatFindName}} can return 0 for all the metric IDs after a
> {{traffic_server}} crash.
> AFAICT this will happen every time with the following conditions:
> 1. traffic_manager has pulled the plugin stat records from traffic_server
> 2. traffic_server crashes
> When traffic_server comes back up, it pulls the records from traffic_manager.
> traffic_manager sends the records including the rsb_id field. However,
> RecForceInsert() does not copy the rsb_id field from the message to the
> actual record. There are 2 reasonable fixes:
> - We could not propagate the 'registered' flag for records that we on. This
> forces the code to re-register, which will bring the stats back to the
> correct state.
> - We could ensure that we copy the rsb_id field so that stat lookups succeed.
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