Cassandra Failure Detector -


cassansra failure detector responsible mark 1 node or down based on heart beat value.basically keeps track of tje heart beat values thats coming through gossip each node , periodically checks if heart beat value monotonously increasing integer value..if value stagnant on period of time,fd mark node down. question period or how many heartbeat values checked determine if node down... there such logic fd check many periodic hb values in every x second...

the configuration option i've found phi_convict_threshold in cassandra.yaml, tunes probability of marking specific node unavailable.

there's suggestion in documentation increase value, if you're working in unreliable environment:

  • default value 8 can increase threshold in case there many false positives.
  • increasing above 12 not suggested.
  • decreasing lower 5 not recommended.

follow these links further explanation


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