[CORE-96]: admin/server fix set_log_level handling of overlapping expirations #18397
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_log_level_resets is a map<str, level_reset>, we want to extract the next expiring level_reset to rearm the _log_level_timer. previously we would extract the min_element based on the key (the logger name) so this sequence of actions set log-level kafka trace 10 set log-level raft trace 10 only kafka would be expired, because once expired the next run would pick again kafka, see that there is no expiration, and not rearm the timer.
the test shows that this sequence of actions set log-level admin-api-server trace 10 set log-level raft trace 10 works and both logger are reset after the expiry period
previously, this sequence of actions set log-level raft trace 10 set log-level raft error 0 would result in raft logging at error level for only 10 seconds, despite the legit request to expire never. this is because in the code, the second request would not correctly reset the expire field if a previous name-level_reset was already in the map used for this operation
test that set log-level admin_api_server trace 10 set log-level admin_api_server error 0 never resets the logger to the info level
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/backport v24.1.x |
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/backport v23.3.x |
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/backport v23.2.x |
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Failed to create a backport PR to v23.2.x branch. I tried: |
This was referenced May 13, 2024
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This PR fixes this two behaviors
overlapping expiration of different loggers
before
one logger expiration could shadow another logger expiration
log-level set kafka -l trace -e 30log-level set raft -l trace -e 30.. 30+ secs later
log-level get kafka -> infolog-level get raft -> trace<- not being resetwith this pr
both loggers are reset correctly
log-level set kafka -l trace -e 30log-level set raft -l trace -e 30.. 30+ secs later
log-level get kafka -> infolog-level get raft -> info<- correctly resetexpire-never request not being honored, if overlapping a previous request
a logger expiration could influence a subsequent request to set a level without expiration
note: this case in practice is probably never triggered, since the only level that shows anomalous behavior is
errorandwarn, and they are not levels that are normally usedbefore
log-level set raft -l trace -e 30log-level set raft -l error -e 0<- 0 is for expire-never... 30+ secs later
log-level get raft -> info<- reset to a default levelwith this pr
log-level set raft -l trace -e 30log-level set raft -l error -e 0<- 0 is for expire-never... 30+ secs later
log-level get raft -> error<- keeps its valueFixes CORE-96
Backports Required
Release Notes
Bug Fixes