Gossip conviction threshold too low
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Key: CASSANDRA-610
URL: https://issues.apache.org/jira/browse/CASSANDRA-610
Project: Cassandra
Issue Type: Bug
Environment: debian lenny amd 64 OpenJDK 64-Bit Server VM (build
1.6.0_0-b11, mixed mode)
Reporter: Brandon Williams
Assignee: Brandon Williams
Fix For: 0.5
Attachments: 610.patch
The current gossip conviction threshold is a bit too low, and can cause hosts
to 'flap' under heavy load. I suspect that the original author of the failure
detector implementation originally used both suspect and convict, but at some
point decided that there was no action to take when a host was suspected, or
that it was not worth doing. They appear to have short-circuited the code to
convict on suspect to eliminate this, however this caused the suspicion
threshold (5) to be used for convicting hosts instead of the conviction
threshold (8).
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