[jboss-user] [JCA/JBoss] - Datasource failover, sudden disconnection not working

[sebastianlacuesta]

I have a problem using datasource failover with MySQL. My setup is JBoss at host A, and mysql in host B, replicated in host A. I have followed the instructions in JBossJCADatabaseFailover.
When I stop mysql at machine B with /etc/init.d/mysql stopfailover works flawlessly, but if I disconnect B's network cable, the application just keeps waiting for the query, and no failover is done. The datasource configuration is:

<?xml version="1.0" encoding="UTF-8"?>

<!-- $Id: mysql-ds.xml,v 1.3.2.3 2006/02/07 14:23:00 acoliver Exp $ -->
<!--  Datasource config for MySQL using 3.0.9 available from:http://www.mysql.com/downloads/api-jdbc-stable.html-->


  <ha-local-tx-datasource>
    <jndi-name>PokUpdateDs</jndi-name>
    <connection-url>jdbc:mysql://192.168.10.219:3306/POK2|jdbc:mysql://192.168.10.210:3306/POK2</connection-url>
    <url-delimeter>|</url-delimeter>
    <driver-class>com.mysql.jdbc.Driver</driver-class>
    <user-name>JBossAS</user-name>
    MyPassword
    <min-pool-size>5</min-pool-size>
    <max-pool-size>20</max-pool-size>
    <idle-timeout-minutes>10</idle-timeout-minutes>
    <blocking-timeout-millis>300</blocking-timeout-millis>
    <exception-sorter-class-name>com.mysql.jdbc.integration.jboss.ExtendedMysqlExceptionSorter</exception-sorter-class-name>
    <!-- should only be used on drivers after 3.22.1 with "ping" support -->
    <valid-connection-checker-class-name>com.mysql.jdbc.integration.jboss.MysqlValidConnectionChecker</valid-connection-checker-class-name>

    <!-- sql to call when connection is created
    <new-connection-sql>select sysdate() from dual</new-connection-sql>
    -->
    <!-- sql to call on an existing pooled connection when it is obtained from pool - MySQLValidConnectionChecker is preferred for newer drivers -->
    <check-valid-connection-sql>select sysdate() from dual</check-valid-connection-sql>

    <!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml (optional) -->
    
       <type-mapping>mySQL</type-mapping>
    
  </ha-local-tx-datasource>



The hosts are:

A: 192.168.10.210
B: 192.168.10.219

I could keep playing with blocking-timeout-millis, but I prefer to ask before continue. My question is: What should I have to consider in order to solve this? I mean, get failover working when a database stop working suddenly, not by stopping it cleanly.
Thanks.

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