renecannao
commented
4 years ago Can you try the same using the default autocommit settings?
Open nasamitnick opened 4 years ago
renecannao
commented
4 years ago Can you try the same using the default autocommit settings?
nasamitnick
commented
4 years ago I can't，because the Java framework spring transaction use set autocommit =0 start transaction.
So I used the following settings set autocommit variables :
+---------------------------------------+----------------+
| variable_name | variable_value |
+---------------------------------------+----------------+
| mysql-forward_autocommit | true |
| mysql-enforce_autocommit_on_reads | false |
| mysql-autocommit_false_not_reusable | true |
| mysql-autocommit_false_is_transaction | true |
+---------------------------------------+----------------+Is there a problem with mysql-autocommit_false_is_transaction=true
@renecannao
renecannao
commented
4 years ago You are probably configuring the wrong variables.
With default settings, autocommit=0 starts a transaction at the first non SELECT.
If you want to start a transaction on the first SELECT, configure mysql-enforce_autocommit_on_reads=true.
The other settings are unrelated to Java Spring
nasamitnick
commented
4 years ago thanks，i try
nasamitnick
commented
4 years ago use default settings like this set autocommit variables :
+---------------------------------------+----------------+
| variable_name | variable_value |
+---------------------------------------+----------------+
| mysql-forward_autocommit | false |
| mysql-enforce_autocommit_on_reads | false |
| mysql-autocommit_false_not_reusable | false |
| mysql-autocommit_false_is_transaction | false |
+---------------------------------------+----------------+Exce sql
renecannao
commented
4 years ago Please attach the whole configuration, the whole error log, and a reproducible test case starting from a restarted proxysql. The reason why DML are started on reader hostgroup is likely because you are not using the default autocommit settings.
nasamitnick
commented
4 years ago i use default autocommit settings test,when spring datasource set prepstmts= true，Read only error occurred
1.select 2.update the update sql will route to reader_hostgroup,cause read only error,About this question see #2592 @renecannao
set prepstmts=false It's right route to write_hostgroup；
+--------------------------------------------------------------+-----------------------------+
| variable_name | variable_value |
+--------------------------------------------------------------+-----------------------------+
| admin-admin_credentials | admin:admin |
| admin-checksum_mysql_query_rules | true |
| admin-checksum_mysql_servers | true |
| admin-checksum_mysql_users | true |
| admin-cluster_check_interval_ms | 1000 |
| admin-cluster_check_status_frequency | 10 |
| admin-cluster_mysql_query_rules_diffs_before_sync | 3 |
| admin-cluster_mysql_query_rules_save_to_disk | true |
| admin-cluster_mysql_servers_diffs_before_sync | 3 |
| admin-cluster_mysql_servers_save_to_disk | true |
| admin-cluster_mysql_users_diffs_before_sync | 3 |
| admin-cluster_mysql_users_save_to_disk | true |
| admin-cluster_password | |
| admin-cluster_proxysql_servers_diffs_before_sync | 3 |
| admin-cluster_proxysql_servers_save_to_disk | true |
| admin-cluster_username | |
| admin-hash_passwords | true |
| admin-mysql_ifaces | 0.0.0.0:6032 |
| admin-read_only | false |
| admin-refresh_interval | 2000 |
| admin-restapi_enabled | false |
| admin-restapi_port | 6070 |
| admin-stats_credentials | stats:stats |
| admin-stats_mysql_connection_pool | 60 |
| admin-stats_mysql_connections | 60 |
| admin-stats_mysql_query_cache | 60 |
| admin-stats_mysql_query_digest_to_disk | 0 |
| admin-stats_system_cpu | 60 |
| admin-stats_system_memory | 60 |
| admin-telnet_admin_ifaces | (null) |
| admin-telnet_stats_ifaces | (null) |
| admin-vacuum_stats | true |
| admin-version | 2.0.10-27-g5b31997 |
| admin-web_enabled | false |
| admin-web_port | 6080 |
| mysql-add_ldap_user_comment | |
| mysql-auditlog_filename | |
| mysql-auditlog_filesize | 104857600 |
| mysql-aurora_max_lag_ms_only_read_from_replicas | 2 |
| mysql-auto_increment_delay_multiplex | 5 |
| mysql-autocommit_false_is_transaction | false |
| mysql-autocommit_false_not_reusable | false |
| mysql-automatic_detect_sqli | 0 |
| mysql-binlog_reader_connect_retry_msec | 3000 |
| mysql-client_found_rows | true |
| mysql-client_multi_statements | true |
| mysql-client_session_track_gtid | true |
| mysql-commands_stats | true |
| mysql-connect_retries_delay | 1 |
| mysql-connect_retries_on_failure | 10 |
| mysql-connect_timeout_server | 3000 |
| mysql-connect_timeout_server_max | 10000 |
| mysql-connection_delay_multiplex_ms | 0 |
| mysql-connection_max_age_ms | 0 |
| mysql-connpoll_reset_queue_length | 50 |
| mysql-default_character_set_results | utf8mb4 |
| mysql-default_charset | utf8mb4 |
| mysql-default_collation_connection | utf8mb4_general_ci |
| mysql-default_isolation_level | READ COMMITTED |
| mysql-default_max_join_size | 18446744073709551615 |
| mysql-default_max_latency_ms | 1000 |
| mysql-default_net_write_timeout | 60 |
| mysql-default_query_delay | 0 |
| mysql-default_query_timeout | 36000000 |
| mysql-default_reconnect | true |
| mysql-default_schema | information_schema |
| mysql-default_session_track_gtids | OFF |
| mysql-default_sql_auto_is_null | OFF |
| mysql-default_sql_safe_updates | OFF |
| mysql-default_sql_select_limit | DEFAULT |
| mysql-default_time_zone | SYSTEM |
| mysql-default_transaction_read | WRITE |
| mysql-default_tx_isolation | READ-COMMITTED |
| mysql-enforce_autocommit_on_reads | false |
| mysql-eventslog_default_log | 0 |
| mysql-eventslog_filename | |
| mysql-eventslog_filesize | 104857600 |
| mysql-eventslog_format | 1 |
| mysql-firewall_whitelist_enabled | 0 |
| mysql-firewall_whitelist_errormsg | Firewall blocked this query |
| mysql-forward_autocommit | false |
| mysql-free_connections_pct | 10 |
| mysql-handle_unknown_charset | 1 |
| mysql-have_compress | true |
| mysql-have_ssl | false |
| mysql-hostgroup_manager_verbose | 1 |
| mysql-init_connect | |
| mysql-interfaces | 0.0.0.0:6033 |
| mysql-keep_multiplexing_variables | tx_isolation,version |
| mysql-kill_backend_connection_when_disconnect | true |
| mysql-ldap_user_variable | |
| mysql-log_unhealthy_connections | true |
| mysql-long_query_time | 1000 |
| mysql-max_allowed_packet | 104857600 |
| mysql-max_connections | 4000 |
| mysql-max_stmts_cache | 10000 |
| mysql-max_stmts_per_connection | 20 |
| mysql-max_transaction_time | 14400000 |
| mysql-min_num_servers_lantency_awareness | 1000 |
| mysql-mirror_max_concurrency | 16 |
| mysql-mirror_max_queue_length | 32000 |
| mysql-monitor_connect_interval | 60000 |
| mysql-monitor_connect_timeout | 600 |
| mysql-monitor_enabled | true |
| mysql-monitor_galera_healthcheck_interval | 5000 |
| mysql-monitor_galera_healthcheck_max_timeout_count | 3 |
| mysql-monitor_galera_healthcheck_timeout | 800 |
| mysql-monitor_groupreplication_healthcheck_interval | 5000 |
| mysql-monitor_groupreplication_healthcheck_max_timeout_count | 3 |
| mysql-monitor_groupreplication_healthcheck_timeout | 800 |
| mysql-monitor_groupreplication_max_transactions_behind_count | 3 |
| mysql-monitor_history | 600000 |
| mysql-monitor_password | Uip.1234! |
| mysql-monitor_ping_interval | 10000 |
| mysql-monitor_ping_max_failures | 3 |
| mysql-monitor_ping_timeout | 1000 |
| mysql-monitor_query_interval | 60000 |
| mysql-monitor_query_timeout | 100 |
| mysql-monitor_read_only_interval | 1500 |
| mysql-monitor_read_only_max_timeout_count | 3 |
| mysql-monitor_read_only_timeout | 500 |
| mysql-monitor_replication_lag_interval | 10000 |
| mysql-monitor_replication_lag_timeout | 1000 |
| mysql-monitor_replication_lag_use_percona_heartbeat | |
| mysql-monitor_slave_lag_when_null | 60 |
| mysql-monitor_threads_max | 128 |
| mysql-monitor_threads_min | 8 |
| mysql-monitor_threads_queue_maxsize | 128 |
| mysql-monitor_username | monitor |
| mysql-monitor_wait_timeout | true |
| mysql-monitor_writer_is_also_reader | true |
| mysql-multiplexing | true |
| mysql-ping_interval_server_msec | 120000 |
| mysql-ping_timeout_server | 500 |
| mysql-poll_timeout | 2000 |
| mysql-poll_timeout_on_failure | 100 |
| mysql-query_cache_size_MB | 256 |
| mysql-query_cache_stores_empty_result | true |
| mysql-query_digests | true |
| mysql-query_digests_lowercase | false |
| mysql-query_digests_max_digest_length | 2048 |
| mysql-query_digests_max_query_length | 65000 |
| mysql-query_digests_no_digits | false |
| mysql-query_digests_normalize_digest_text | false |
| mysql-query_digests_replace_null | false |
| mysql-query_digests_track_hostname | false |
| mysql-query_processor_iterations | 0 |
| mysql-query_processor_regex | 1 |
| mysql-query_retries_on_failure | 1 |
| mysql-reset_connection_algorithm | 2 |
| mysql-server_capabilities | 569899 |
| mysql-server_version | 8.0.19 |
| mysql-servers_stats | true |
| mysql-session_idle_ms | 1000 |
| mysql-session_idle_show_processlist | true |
| mysql-sessions_sort | true |
| mysql-set_query_lock_on_hostgroup | 1 |
| mysql-show_processlist_extended | 0 |
| mysql-shun_on_failures | 5 |
| mysql-shun_recovery_time_sec | 10 |
| mysql-ssl_p2s_ca | |
| mysql-ssl_p2s_cert | |
| mysql-ssl_p2s_cipher | |
| mysql-ssl_p2s_key | |
| mysql-stacksize | 1048576 |
| mysql-stats_time_backend_query | false |
| mysql-stats_time_query_processor | false |
| mysql-tcp_keepalive_time | 0 |
| mysql-threads | 4 |
| mysql-threshold_query_length | 524288 |
| mysql-threshold_resultset_size | 4194304 |
| mysql-throttle_connections_per_sec_to_hostgroup | 1000000 |
| mysql-throttle_max_bytes_per_second_to_client | 0 |
| mysql-throttle_ratio_server_to_client | 0 |
| mysql-use_tcp_keepalive | 0 |
| mysql-verbose_query_error | false |
| mysql-wait_timeout | 28800000 |
+--------------------------------------------------------------+-----------------------------+
proxysql version:2.0.10-27-g5b31997 os version:redhat 7.5
set autocommit variables :
runtime_mysql_users:
in stats_mysql_query_digest table We can see 100 times rollback Executed，but if set
mysql-multiplexing='true'then some insert will be commit； if setmysql-multiplexing='false'then all insert will be rollbackI checked the document for
Multiplexing,in document:Is this a bug? @renecannao