This release is based on MySQL 5.7.21 and includes all the bug fixes in it. Percona Server 5.7.21-20 is now the current GA (Generally Available) release in the 5.7 series. All software developed by Percona is open-source and free.
version_suffixallows to change suffix for the Percona Server version string returned by the read-only
version_commentis converted from a global read-only to a global read-write variable.
keyring_vault_timeoutvariable allows to set the amount of seconds for the Vault server connection timeout. Bug fixed #298.
5.6.38-83.0) and on MacOS (caused by fixing the bug #264 in Percona Server
5.7.20-19). Bugs fixed #2284 and #2286.
encrypt_binlogwith no binary or relay logging enabled. Bug fixed #287.
IMPORT TABLESPACEcommand. Bug fixed #276.
This release also contains fixes for the following CVE issues: CVE-2018-2565, CVE-2018-2573, CVE-2018-2576, CVE-2018-2583, CVE-2018-2586, CVE-2018-2590, CVE-2018-2612, CVE-2018-2600, CVE-2018-2622, CVE-2018-2640, CVE-2018-2645, CVE-2018-2646, CVE-2018-2647, CVE-2018-2665, CVE-2018-2667, CVE-2018-2668, CVE-2018-2696, CVE-2018-2703, CVE-2017-3737.
rocksdb_allow_to_start_after_corruptionvariable can be passed to
mysqldas a command line parameter to switch off this restart failure.
ALLOW_NO_SSE42was introduced to allow MyRocks build on hosts not supporting SSE 4.2 instructions set, which makes MyRocks usable without FastCRC32-capable hardware. Bug fixed MYR-207.
rocksdb_wal_bytes_per_syncvariables were turned into dynamic ones.
rocksdb_flush_memtable_on_analyzevariable has been removed.
rocksdb_concurrent_prepareis now deprecated, as it has been renamed in upstream to
rocksdb_row_lock_wait_timeoutsglobal status counters were added to track the number of deadlocks and the number of row lock wait timeouts.
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