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Percona Server 5.7.10-1

Percona is glad to announce the first Release Candidate release of Percona Server 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 5.7.10-1 is the current Release Candidate release in the Percona Server 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 latest Percona Server 5.6 release (currently Percona Server 5.6.27-76.0).

New Features

Percona Server 5.7.10-1 is not available on RHEL 5 family of Linux distributions and Debian 6 (squeeze).

Complete list of changes between Percona Server 5.6 and 5.7 can be seen 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.

Variables innodb_show_verbose_locks and innodb_show_locks_held are not working correctly.

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

  • Bug #78963, super_read_only aborts STOP SLAVE if variable relay_log_info_repository is set to TABLE which could lead to a server crash in Debug builds.
  • Bug #79328, super_read_only set as a server option has no effect.

Using primary key with a BLOB in 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 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.

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