Percona Server moved to 5.7.20-19

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Percona Server moved to
Hrvoje Matijakovic
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2 EvgeniyPatlan, 1 Laurynas Biveinis, 1 Przemyslaw Skibinski, 1 Robert Golebiowski, 3 Vlad Lesin
1 Implemented
7 Fix Released

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Release notes 


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New Features
Now MyRocks Storage Engine has General Availablity status.
Binary log encryption has been implemented and can be now switched on using the encrypt_binlog variable.
print_lock_wait_timeout_info variable, introduced in 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 of activated informational row-based logging. Bug fixed #1722789
Help command provided a link to an older version of the Percona Server manual. Bug fixed #1708073
A regression in the mysqld_safe script prevented to stop MySQL service correctly. Bugs fixed #1738742
Blackhole storage engine was incompatible with newer length limit of the InnoDB index key prefixes. Bug fixed #1733049
Heartbeats received by slave were reacted with mysql.slave_master_info table sync on each of them, causing huge increase in write load Bug fixed #1708033
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.

1 blueprint and 7 bugs targeted

Blueprint Priority Assignee Delivery
Enables encryption of binlog and relay logs Enables encryption of binlog and relay logs 4 High Robert Golebiowski  11 Implemented
Bug report Importance Assignee Status
1740350 #1740350 Regression - build error in PS 5.7 2 Critical Laurynas Biveinis  10 Fix Released
1722789 #1722789 Intermediary slave does not log master changes with binlog_rows_query_log_events 3 High Vlad Lesin  10 Fix Released
1733049 #1733049 Blackhole : Specified key was too long; max key length is 1000 bytes 3 High Vlad Lesin  10 Fix Released
1738742 #1738742 There is a slight problem in stopping the script,the version is Percona-Server-5.7.20-18-Linux.x86_64.ssl101 3 High EvgeniyPatlan  10 Fix Released
1708033 #1708033 heartbeats/fakerotate cause a forced sync_master_info 4 Medium Vlad Lesin  10 Fix Released
1708073 #1708073 PS 5.7.18 help is showing a 5.6 link 4 Medium Przemyslaw Skibinski  10 Fix Released
1718998 #1718998 Server leaves empty file named "0" on shutdown 4 Medium EvgeniyPatlan  10 Fix Released
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