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Raft: Check suspect info once per suspect interval #1600

Merged
merged 1 commit into from
Jul 14, 2020
Merged

Raft: Check suspect info once per suspect interval #1600

merged 1 commit into from
Jul 14, 2020

Commits on Jul 14, 2020

  1. Raft: Check suspect info once per suspect interval 

    Today's existing suspect logic has a periodic checker, which checks
every 10s if the Raft cluster still has quorum.  If the cluster has lost
quorum, it marks the time this event begins, then, every 10s checks to
see if 'enough' time has elapsed since the quorum was lost to suspect
that the OSN has been evicted.

If the OSN has not been evicted, or cannot determine its eviction
status, then every 10s the OSN attempts to re-check its suspicion
status, which can lead to large volumes of network traffic, especially
in significiantly multichannel environments.

This commit modifies the logic to track the number of times that the
suspect checking logic has actually executed, to ensure that we check no
more than once every suspect interval (by default every 10m, instead of
every 10s).

Signed-off-by: Jason Yellick <jyellick@us.ibm.com>
    Jason Yellick committed Jul 14, 2020
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