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https://issues.apache.org/jira/browse/GIRAPH-273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13426261#comment-13426261
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Avery Ching commented on GIRAPH-273:
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I believe not, since the workers always communicated to the master using
ZooKeeper in the past. See BspServiceMaster#becomeMaster(), which describes
the master protocol to see if it is the master. BspService#masterElectionPath
contains the location to the actual master, just need to factor out the common
code to get the master address out of BspServiceMaster#becomeMaster() and
perhaps put it in BspService. Note, you'll also have to add a few new methods
for communication to the master as none exist currently and start up a Netty
server there as well.
> Aggregators shouldn't use Zookeeper
> -----------------------------------
>
> Key: GIRAPH-273
> URL: https://issues.apache.org/jira/browse/GIRAPH-273
> Project: Giraph
> Issue Type: Improvement
> Reporter: Maja Kabiljo
> Assignee: Maja Kabiljo
>
> We use Zookeeper znodes to transfer aggregated values from workers to master
> and back. Zookeeper is supposed to be used for coordination, and it also has
> a memory limit which prevents users from having aggregators with large value
> objects. These are the reasons why we should implement aggregators gathering
> and distribution in a different way.
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