Percona Server for MySQL 5.7.20-19 Is Now Available

Percona announces the GA release of Percona Server for MySQL 5.7.20-19 on January 3, 2018. Download the latest version from the Percona web site or the Percona Software Repositories. You can also run Docker containers from the images in the Docker Hub repository.

Based on MySQL 5.7.20, including all the bug fixes in it, Percona Server for MySQL 5.7.20-19 is the current GA release in the Percona Server for MySQL 5.7 series. Percona’s provides completely open-source and free software. Find release details in the 5.7.20-19 milestone at Launchpad.

New Features:

• Now MyRocks Storage Engine has General Availability status.
• Binary log encryption has been implemented and can be now switched on using the encrypt_binlog  variable.
• innodb_print_lock_wait_timeout_info variable, introduced in the previous release, but undocumented, allows to log information about all lock wait timeout errors.

Bugs Fixed:

• Intermediary slave with Blackhole storage engine couldn’t record updates from master to its own binary log in case master has the binlog_rows_query_log_events option enabled. Bug fixed  #1722789 (upstream #88057).
• Help command in the mysql command line client provided a link to an older version of the Percona Server manual. Bug fixed #1708073.
• A regression in the mysqld_safe script forced it to print an extra error when stopping the MySQL service. Bug fixed #1738742.
• Blackhole storage engine was incompatible with a newer length limit of the InnoDB index key prefixes. Bug fixed #1733049 (upstream #53588).
• Heartbeats received by slave were reacted with mysql.slave_master_info table sync on each of them even with sync_master_info set to zero, causing a huge increase in write load. Bug fixed  #1708033 (upstream #85158).

MyRocks Changes:

• The replication writebatch functionality has been removed from Percona Server 5.7 due to unsafety of the current implementation.
• Variables rocksdb_block_cachecompressed_hit, rocksdb_block_cachecompressed_miss, and rocksdb_getupdatessince_calls were renamed to rocksdb_block_cache_compressed_hit,
  rocksdb_block_cache_compressed_miss, and
  rocksdb_get_updates_since_calls respectively.

The release notes for Percona Server for MySQL 5.7.20-19 are available in the online documentation. Please report any bugs on the launchpad bug tracker.