James Peach created TS-2931:
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Summary: 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
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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