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https://issues.apache.org/jira/browse/CASSANDRA-1053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12870155#action_12870155
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Brandon Williams edited comment on CASSANDRA-1053 at 5/21/10 4:54 PM:
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Patch to add a PhiConvictThreshold to the config, but leave it commented out
with a default of 8. Values in the config file are clamped between 5 and 16,
but this also exposed via JMX where there is no checking of values.
was (Author: brandon.williams):
Patch to add a PhiConvictThreshold to the config, but leave it commented
out with a default of 8. Also exposed via JMX.
> Expose setting of phi in the FailureDetector
> --------------------------------------------
>
> Key: CASSANDRA-1053
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1053
> Project: Cassandra
> Issue Type: Improvement
> Affects Versions: 0.6
> Reporter: Brandon Williams
> Assignee: Brandon Williams
> Priority: Trivial
> Attachments: 1053.txt
>
>
> I've seen some users, always on cloud platforms, say that they have problems
> with hosts flapping in the FD. GC is not the cause. I know of at least one
> production deployment where they are already hacking phi to 10 to get around
> the flapping problems.
> This is a dangerous thing to expose, however, since giving meaning to the
> difference of 8 and 10 here is hard to quantify to someone unfamiliar with
> the inner workings. Perhaps we can allow setting it in the config, but not
> specify a default and leave it commented out with a big fat warning.
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