Bug #87208 | Flow control mechanism does not prevent nodes from lagging further behind | ||
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Submitted: | 26 Jul 2017 14:05 | Modified: | 31 Jul 2017 12:24 |
Reporter: | Kenny Gryp | Email Updates: | |
Status: | Not a Bug | Impact on me: | |
Category: | MySQL Server: Group Replication | Severity: | S3 (Non-critical) |
Version: | 5.7.18 | OS: | Any |
Assigned to: | MySQL Verification Team | CPU Architecture: | Any |
[26 Jul 2017 14:05]
Kenny Gryp
[26 Jul 2017 14:09]
Kenny Gryp
I saw that this bug is most likely fixed with the ability to fine tune flow control in 8.0.2 as I found (thanks @lefred) in https://dev.mysql.com/worklog/task/?id=9838 Can we get this in 5.7? (-:
[31 Jul 2017 12:24]
MySQL Verification Team
Hi, The way it works, with a minimum commit rate for flow-control, there is a limit how much it can slow down the system. It will *never* fully slow down the system! If you set the threshold to a bit less then 1000 in your case, it might work, but really to discuss proper configuration for your system you should contact MySQL Support team, not write a bug :D as this is not a bug. Best regards Bogdan