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https://issues.apache.org/jira/browse/ZOOKEEPER-578?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Henry Robinson resolved ZOOKEEPER-578.
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Resolution: Won't Fix
I don't think this is relevant any more.
> ResponderThread should be able to use TCP or UDP
> ------------------------------------------------
>
> Key: ZOOKEEPER-578
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-578
> Project: ZooKeeper
> Issue Type: Improvement
> Components: server
> Affects Versions: 3.2.1
> Reporter: Henry Robinson
> Assignee: Henry Robinson
>
> The ResponderThread, which responds to inquiries for the current leader,
> currently only uses UDP. It also only runs for electionAlg=0.
> Observers will eventually require that a ResponderThread runs for all
> election types. However, this introduces a UDP dependency which some
> installations do not want. This would also allow such installations to use
> electionAlg=0 (although this is not a big win as it is the least
> sophisticated election algorithm).
> Therefore we should be able to toggle ResponderThread to use either TCP or
> UDP. Since UDP is more performant, it probably makes sense to retain it. So I
> propose to choose between the two at startup time using a configuration flag
> responderTCP=true.
> Fixing this issue exposed ZOOKEEPER-569, on which this JIRA depends.
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