CODEWITHSUNDEEP
cassandracassandra-3.0
evyatars
evyatars

Reputation: 81

how to disable dynamic_snitch on cassandra 3.11.9+ dynamic_snitch_badness_threshold cassandra.yaml param

Can anyone explain which value should be put in order to disable dynamic_snitch? im not sure if 0 or high number (50+?)

I see this information on cassandra.yaml:
https://github.com/apache/cassandra/blob/trunk/conf/cassandra.yaml
# controls how often to perform the more expensive part of host score
# calculation
dynamic_snitch_update_interval_in_ms: 100 
# controls how often to reset all host scores, allowing a bad host to
# possibly recover
dynamic_snitch_reset_interval_in_ms: 600000
# if set greater than zero, this will allow
# 'pinning' of replicas to hosts in order to increase cache capacity.
# The badness threshold will control how much worse the pinned host has to be
# before the dynamic snitch will prefer other replicas over it.  This is
# expressed as a double which represents a percentage.  Thus, a value of
# 0.2 means Cassandra would continue to prefer the static snitch values
# until the pinned host was 20% worse than the fastest.
dynamic_snitch_badness_threshold: 1.0

Thanks.

Upvotes: 2

Views: 373

Answers (1)

Alex Ott
Alex Ott

Reputation: 87109

You need to look into documentation that says:

dynamic_snitch: whether the dynamic snitch should be enabled or disabled.

For some reason it's not documented in the cassandra.yaml but you can find it in the source code. So just set this parameter to false

Upvotes: 3

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