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@pondix pondix released this 21 Apr 16:11
v2.1.1
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v2.1.1-Release notes

This is a minor release for the ProxySQL 2.1 series containing several bug fixes and new features.

Compared to ProxySQL 2.1.0 , 2.1.1 introduces the following changes:

Bug fixes

  • Fixed setting of collations requested during the connection phase and during a MYSQL_CHANGE_USER. This fix is a workaround for two MySQL bugs: #3249
  • Also improved workaround for MySQL bug #102266. This MySQL bug was triggered due to recent fixes introduced in #3249.
    Initial workaround scope was extended as the MySQL bug report was updated with more findings and a draft with a potential fix (see
    #102266). #3276
  • Fixed abort during startup in ARM CentOS systems due to unsupported pagesize by jemalloc. #3256
  • Fixed a memory corruption that could cause a crash in MySQL_HostGroups_Manager::update_group_replication_set_writer. #3263
  • Fixed small memory leak during query rules creation. #3262
  • Implemented parsing of charset/collation for COM_CHANGE_USER. #3276
  • Fixed infinite loop induced by particular timing conditions during SSL handshake. #3273
  • Improved how prepared statements metadata is updated during PROCESSING_STMT_EXECUTE. #1574
  • Improved resiliency parsing complex SET statements. #3317 NOTE: Found missing
  • Fixed inifinite loop in case of multi-statements and closed backend connection. #3347
  • Fixed memory leak related to allocation of specific 'stmt_execute_metadata_t' bind buffers types #3350. Affected types where:
    • MYSQL_TYPE_DATE
    • MYSQL_TYPE_DATETIME
    • MYSQL_TYPE_TIMESTAMP
    • MYSQL_TYPE_DATETIME
  • Fixed dropping of connections from PXC readers being set offline due to 'pxc_maint_mode' being set to 'MAINTENANCE'. #3182
    Before this change readers were set to OFFLINE_HARD and removed from the reader_hostgroup when pxc_maint_mode was set to MAINTENANCE. now readers are set to SHUNNED, preserving any active connection.
  • Fixed invalid memory accesses detected in the prepared statements buffer implementation. #3324, #3334
  • Fixed shunned server due to replication lag re-enabled due to replication check timing out. #3340
  • Fixed crash due to counter update in MySQL_Result_to_MySQL_wire without myds. #3363
  • Fixed crash due to unhandled exception when trying to enable restapi in Centos 6. #3369
  • Now both commands PROXYSQL STOP and PROXYSQL RESTART commands clean prometheus metrics values. #3330
  • Added extra logging suggesting solution when bind() fails due to EADDRNOTAVAIL. #3345
  • ProxySQL now prevents execution of LOAD DATA LOCAL INFILE and prints a message that it is not supported. #833
  • Deprecation of mysql-forward_autocommit because it was not working as expected. #3253

New features

  • Introduced new variables mysql-enable_client_deprecate_eof and mysql-enable_server_deprecate_eof, allowing control of CLIENT_DEPRECATE_EOF capability for client and backend connections.
    Through this users can now avoid MySQL bug #83346 which is reponsable for the behavior seen in issue #3251.
    By using mysql-enable_server_deprecate_eof to disable CLIENT_DEPRECATE_EOF if their backend version is affected and they have query cache enabled.
  • Prepared statements buffering. ProxySQL is now able to buffer prepared statements results, in the same fashion it was previously done for text protocol.
    ProxySQL no longer needs to receive the full resulset from a prepared statement and keep it in memory, before sending it to the client. #3295
  • Added SPIFFE support. #3343
  • RESTAPI now returns proper errors code for script failures. #3223
  • Added support for popular MySQL client mycli to Admin interface. #3247
  • Added new variable mysql-log_mysql_warnings_enabled, controlling whether or not MySQL warnings should be placed in the error log. #3258
  • Added support for C# connector for Admin interface. #2543
  • ProxySQL now filters queries that are of the form SET (@@|session.||)wait_timeout = ?. #3184

Enhancements

  • Added extra logging to monitor_replication_lag_thread to reflect when Seconds_Behind_Master is NULL. #3288
  • Removed duplicated call to 'conn_unregister' in monitor_group_replication_thread performed outside proper check. #3267
  • Fixed compatibility with HAProxy MySQL health checks. #3342
  • Prevent unnecessary logging and port check during admin variables flushing. #3298
  • Improve error reporting for MySQL_Monitor and MySQL_Session backend connections via counters. #3310
    • Introduced new error codes for ProxySQL dynamic counters for errors detected on ProxySQL side regarding invalid states on backend MySQL connections.
      Errors codes can be found in new enum.
    • Note that this classification makes a distinction between errors on ProxySQL side, and errors detected in the MySQL connection itself.
  • ProcessQueryAndSetStatusFlags is now called now always at the end of query, this means that we will always set the status flag of the connection, no matter if the query succeed or not. This means that, for example, a connection multiplexing can be disabled if the query send should disable it, even if the query itself failed. 3327
  • Create metric to track number of times multiplexing is disabled due to mysql-auto_increment_delay_multiplex. #3330
  • Major rework performed in RESTAPI. Rewritten implementation properly handling scripts execution and timeouts. 3223
  • Optimized MySQL_HostGroups_Manager::read_only_action() reducing the number of calls to SQLite. New implementation offers great performance improvements for instances with a large number of hostgroups. #3349

- Official ProxySQL DockerHub Repository

SHA256s:

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Assets 35
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