[TiDB Usage Environment] Production Environment / Testing / Poc
[TiDB Version]
[Reproduction Path] What operations were performed when the issue occurred
[Encountered Issue: Issue Phenomenon and Impact]
[Resource Configuration] Go to TiDB Dashboard - Cluster Info - Hosts and take a screenshot of this page
[Attachments: Screenshots/Logs/Monitoring]
tidb_enable_tiflash_pipeline_model removed
but, in 7.5, this parameter still exists and is ON.
mysql> select version();
+--------------------+
| version() |
+--------------------+
| 8.0.11-TiDB-v7.5.0 |
+--------------------+
1 row in set (0.01 sec)
mysql> show global variables like '%tidb_enable_tiflash_pipeline_model%';
+------------------------------------+-------+
| Variable_name | Value |
+------------------------------------+-------+
| tidb_enable_tiflash_pipeline_model | ON |
+------------------------------------+-------+
1 row in set (0.00 sec)
I’m more concerned about whether the usage of this parameter has been removed from the code. If it has been removed, the impact should not be significant.
I reviewed the code PR, and it has been deleted without any impact, which was surprising. Now, looking at it again, there is a bit of discrepancy between the documentation description and the actual handling. The “deletion” here should be “deprecation.”