Percona announces the release of Percona Toolkit 3.0.10 on May 22, 2018.
Percona Toolkit is a collection of advanced open source command-line tools, developed and used by the Percona technical staff, that are engineered to perform a variety of MySQL®, MongoDB® and system tasks that are too difficult or complex to perform manually. With over 1,000,000 downloads, Percona Toolkit supports Percona Server for MySQL, MySQL®, MariaDB®, Percona Server for MongoDB and MongoDB.
This release includes the following changes:
PT-131: pt-table-checksum disables the QRT plugin
The Query Response Time Plugin provides a tool for analyzing information by counting and displaying the number of queries according to the length of time they took to execute. This feature enables a new flag --disable-qrt-plugin that leverages Percona Server for MySQL’s new ability to disable QRT plugin at the session level. The advantage to enabling this Toolkit feature is that the QRT metrics are not impacted by the work that pt-table-checksum performs. This means that QRT metrics report only the work your Application is generating on MySQL, and not clouded by the activities of pt-table-checksum.
PT-118: pt-table-checksum reports the number of rows of difference between master and slave
We’re adding support for pt-table-checksum to identify the number of row differences between master and slave. Previously you were able to see only the count of chunks that differed between hosts. This is helpful for situations where you believe you can tolerate some measure of row count drift between hosts, but want to be precise in understanding what that row count difference actually is.
PT-1546: Improved support for MySQL 8 roles
PT-1543: The encrypted table status query causes high load over multiple minutes
Users reported that listing encrypted table status can be very slow. We’ve enabled this functionality via --list-encrypted-tables and set it to default of disabled.
PT-1536: Added info about encrypted tablespaces in pt-mysql-summary
We’ve improved pt-mysql-summary to now include information about encrypted tablespaces. This information is available by using --list-encrypted-tables .
PT-1556: pt-table-checksum 3.0.9 does not change binlog_format to statement any more.
pt-show-grants has several known issues when working with MySQL 8 and roles, which Percona aims to address in subsequent Percona Toolkit releases: PT-1560, PT-1559, and PT-1558
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