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https://issues.apache.org/jira/browse/ARTEMIS-3344?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Justin Bertram resolved ARTEMIS-3344.
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Resolution: Abandoned
> Embedding Zookeeper for Pluggable Quorum Vote
> ----------------------------------------------
>
> Key: ARTEMIS-3344
> URL: https://issues.apache.org/jira/browse/ARTEMIS-3344
> Project: ActiveMQ Artemis
> Issue Type: Improvement
> Reporter: Francesco Nigro
> Assignee: Francesco Nigro
> Priority: Major
>
> One of the nicer things of the Atomix RI, last minute dropped because of lack
> of OSS community, related to the single pair use case, was the ability to
> achieve a sufficient number of nodes in order to prevent split-brain just by
> adding a "witness" node (without being a full-fat broker) to the existing
> primary/backup ones.
> It was possible because each broker node was already an active member of the
> quorum and able to participate to quorum votes.
> This was saving users to configure any external service and just care about
> brokers and their reachability, on topology setup.
> Providing a similar behavior for Apache Curator/Zookeeper quorum vote RI
> means:
> * exposing some hook/map all the relevant configuration bits of Zookeeper
> * consider the performance/stability hit and memory requirements changes
> while embedding a potentially "noisy" neighbor (network I/O, disk I/O, CPU
> and java heap/memory-wise)
> There are few ways to achieve embedding ZK:
> # as a proper quorum service in the broker
> # by impl some plugin that treat it as an external service to be run along
> the broker
> The latter approach is way less invasive because users can just implement
> such plugin deciding what/which bits configure and expose.
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