Fix not updating backlog histlen when trimming repl backlog #9713
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@huangzhw i encounted this failure again, could you have a look at https://github.com/redis/redis/runs/4068817198?check_suite_focus=true#step:5:1863 |
oranagra
approved these changes
Nov 2, 2021
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@ShooterIT i started discussing it in #9422 (i see if fails quite a lot recently, i wonder what changed..) |
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Since the loop in incrementalTrimReplicationBacklog checks the size of histlen, we cannot afford to update it only when the loop exits, this may cause deleting much more replication blocks, and replication backlog may be less than setting size.
introduce in #9166
thanks @sundb finding this bug.