Github user abhinandanprateek commented on the pull request:
https://github.com/apache/cloudstack/pull/211#issuecomment-98091401
I agree with Koushik here. The purpose of an HA investigator is to either
say that host is UP or Down or it does not know for sure. A host that has not
returned some pings is in an indeterministic state, HA recognises it as "null"
and not as Alert.
That apart there are there places that the method changed gets called. If
you look at the code the Alert state does not have any affect on the code flow.
I hope I did not miss out some.
I will say check again, as introduction of Alert state may confuse people
looking at the code.
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