Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Duplicate
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10.5.6
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None
Description
It seems worker threads of parallel replication are NOT instrumented in MariaDB 10.5's Performance Schema. We see thew following 4 replication tables:
MariaDB [performance_schema]> show tables like 'replication%';
|
+---------------------------------------------+
|
| Tables_in_performance_schema (replication%) |
|
+---------------------------------------------+
|
| replication_applier_configuration |
|
| replication_applier_status |
|
| replication_applier_status_by_coordinator |
|
| replication_connection_configuration |
|
+---------------------------------------------+
|
4 rows in set (0,001 sec)
|
 |
MariaDB [performance_schema]> select version();
|
+----------------+
|
| version() |
|
+----------------+
|
| 10.5.6-MariaDB |
|
+----------------+
|
1 row in set (0,038 sec)
|
and for me it does not make se4nse to instrument coordinator thread without instrumenting worker threads. MySQL 5.7 has the replication_applier_status_by_worker table for this (https://dev.mysql.com/doc/refman/5.7/en/performance-schema-replication-applier-status-by-worker-table.html), and it should be added to MariaDB.
Attachments
Issue Links
- is part of
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MDEV-16437 merge 5.7 P_S replication instrumentation and tables
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- Closed
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