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comments on voting logic

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ryan 2016-05-03 16:08:10 +02:00
parent dfcdb785f1
commit 4f56ed43e1
1 changed files with 5 additions and 0 deletions
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bigchaindb/core.py
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@ -504,6 +504,11 @@ class Bigchain(object):
n_valid_votes = sum(vote_list) n_valid_votes = sum(vote_list)
n_invalid_votes = len(vote_list) - n_valid_votes n_invalid_votes = len(vote_list) - n_valid_votes
# The use of ceiling and floor is to account for the case of an
# even number of voters where half the voters have voted 'invalid'
# and half 'valid'. In this case, the block should marked invalid
# to avoid a hung election. In the case of an odd number of voters
# this is not relevant, since one side must be a majority.
if n_invalid_votes >= math.ceil(n_voters / 2): if n_invalid_votes >= math.ceil(n_voters / 2):
return 'invalid' return 'invalid'
elif n_valid_votes > math.floor(n_voters / 2): elif n_valid_votes > math.floor(n_voters / 2):