June 19, 2013

Post: Galera Flow Control in Percona XtraDB Cluster for MySQL

… This setting controls when flow control engages. Simply speaking, if the wsrep_local_recv_queue exceeds this size on a given node, a pausing flow controlto tell if flow control is happening and where it is coming from There are two global status variables you can check to see what flow control

Post: Using flow control functions for performance monitoring queries

flow control functions like IF or CASE used in MySQL Queries as they are often abused used to…0.0017 | +———+——————+——–+——–+——–+ 1 row in set (7.51…_log_080523 where bot=’google’ group by page_type; …

Post: Percona XtraDB Cluster: Failure Scenarios with only 2 nodes

…stopped on the nodes where the majority is not reached. The quorum algorithm helps to select a PC…protocol version 2 Now when we put the two settings to true, with a two node cluster, it …INFO: Flow-control interval: [9999999, 9999999] 2012-07-24 11:42:51.292 INFO: Shifting OPEN -> PRIMARY (TO: 19)…

Post: Infinite Replication Loop

…represent the replication flow, so 1 is replicating to 2 and to 3, and 2 is replicating to 1…. the server-id where it was executed. Then that event is replicated to the slaves (the… failover if you stop replication # mmm_control @production set_passive (to avoid automatic failover) 2. stop replication…

Post: An update on Percona Live MySQL Conference & Expo 2012

… But that’s under control. Fortunately, we have …to succeed — we need a few things. We need attendees, sponsors, exhibitors, speakers, and content. This is where… get your creative juices flowing, and submit those session…setting up replication, than to come to a session with someone who’s trying to