[ https://issues.apache.org/jira/browse/GIRAPH-266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13421337#comment-13421337 ]
Alessandro Presta commented on GIRAPH-266: ------------------------------------------ I'm in favor of 1 (let's get aggregators to work first of all) and then possibly 3 (or any other good abstraction) to allow aggregations that are not associative binary operations. > Average aggregators don't calculate real average > ------------------------------------------------ > > Key: GIRAPH-266 > URL: https://issues.apache.org/jira/browse/GIRAPH-266 > Project: Giraph > Issue Type: Bug > Reporter: Maja Kabiljo > Assignee: Maja Kabiljo > > Average aggregators calculate average on workers, and then workers' averages > are sent to the master, where we actually calculate the average of averages. > For example, if one worker aggregates value 2, the other values 4 and 6, and > third values 8, 8 and 8, we'll get the result of 5 instead of 6. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira