Bug #82348 Importing a tablespace does not update statistics
Submitted: 26 Jul 2016 16:18 Modified: 27 Jul 2016 4:14
Reporter: Davi Arnaut (OCA) Email Updates:
Status: Verified Impact on me:
Category:MySQL Server: InnoDB storage engine Severity:S3 (Non-critical)
Version:5.7 OS:Any
Assigned to: CPU Architecture:Any
Tags: Contribution, IMPORT TABLESPACE, innodb_stats_persistent

[26 Jul 2016 16:18] Davi Arnaut
Index statistics are not being updated for freshly imported tables when persistent statistics is turned off.

This means that queries on such tables might perform rather poorly.

How to repeat:
Set innodb_stats_persistent to OFF and import a tablespace. Check cardinality after import.
[26 Jul 2016 16:19] Davi Arnaut
Update statistics when importing a tablespace regardless of whether persistent stats is enabled

(*) I confirm the code being submitted is offered under the terms of the OCA, and that I am authorized to contribute it.

Contribution: Import-tablespace-update-statistics.patch (application/octet-stream, text), 4.46 KiB.

[27 Jul 2016 4:14] MySQL Verification Team
Hello Davi,

Thank you for the report and contribution.