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Percona Server for MySQL 5.7.10-1 (2015-12-14)

Percona is glad to announce the first Release Candidate release of Percona Server for MySQL 5.7.10-1 on December 14th, 2015 (Downloads are available here and from the Percona Software Repositories).

Based on MySQL 5.7.10, including all the bug fixes in it, Percona Server for MySQL 5.7.10-1 is the current Release Candidate release in the Percona Server for MySQL 5.7 series. All of Percona’s software is open-source and free, all the details of the release can be found in the 5.7.10-1 milestone at Launchpad

This release contains all the bug fixes from the latest Percona Server for MySQL 5.6 release (currently Percona Server for MySQL 5.6.27-76.0).

New Features

  • Percona Server for MySQL 5.7.10-1 is not available on either the RHEL 5 family of Linux distributions or Debian* 6 (squeeze).

A complete list of the changes between Percona Server for MySQL 5.6 and 5.7 can be found in Changed in Percona Server 5.7.

Known issues

MeCab Full-Text Parser Plugin has not been included in this release.

PAM Authentication Plugin currently isn’t working correctly.

The following variables do not work correctly:

  • innodb_show_verbose_locks

  • innodb_show_locks_held

In Percona Server for MySQL 5.7 super_read_only feature has been replaced with upstream implementation. There are currently two known issues compared to Percona Server for MySQL 5.6 implementation:

  • Bug #78963: If the relay_log_info_repository= TABLE, usingsuper_read_onlyaborts the STOP SLAVE and could lead to a server crash in debug builds.
  • Bug #79328, passing super_read_only as a server option has no effect.

Using a primary key with a BLOB in the TokuDB table could lead to a server crash (#916).

Using XA transactions with TokuDB could lead to a server crash(#900).

Percona TokuBackup has not been included in this release.

Bugs Fixed

Running ALTER TABLE without specifying the storage engine (without ENGINE= clause) or OPTIMIZE TABLE when enforce_storage_engine was enabled could lead to unrequested and unexpected storage engine changes. If done for a system table, it would circumvent regular system table storage engine compatibility checks, resulting in crashes or otherwise broken server operation. Bug fixed #1488055.

Some transaction deadlocks did not increase the INFORMATION_SCHEMA.INNODB_METRICS lock_deadlocks counter. Bug fixed #1466414 (upstream #77399).

Removed excessive locking during the buffer pool resize when checking whether AHI is enabled. Bug fixed #1525215 (upstream #78894).

Removed unnecessary code in the InnoDB error monitor thread. Bug fixed #1521564 (upstream #79477).

With Expanded Fast Index Creation enabled, DDL queries involving InnoDB temporary tables would cause later queries on the same tables to produce warnings that their indexes were not found in the index translation table. Bug fixed #1233431.

Other bugs fixed: #371752 (upstream #45379), #1441362 (upstream #56155), #1385062 (upstream #74810), #1519201 (upstream #79391), #1515602, #1506697 (upstream #57552), #1501089 (upstream #75239), #1447527 (upstream #75368), #1384658 (upstream #74619), #1384656 (upstream #74584), and #1192052.

Last update: 2022-09-27