8. Stage 6--Run the Non-functional Tests : Testing Slave Node Failure
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Testing Slave Node Failure
To achieve any level of automatic recovery if a slave node fails, YARN must be used. By default, YARN is disabled. For details on how to enable YARN, see the VectorH User Guide.
Without YARN, if a slave node fails, the cluster must be manually stopped, re-configured to remove the failed node from the slaves file in $II_SYSTEM/ingres/files, and then re-started.
To simulate the failure of a slave node, the same reboot procedure can be used as for the master node.