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https://issues.apache.org/jira/browse/ZOOKEEPER-2503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15410619#comment-15410619
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Flavio Junqueira commented on ZOOKEEPER-2503:
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To complement what I said above, as I understand it, we shouldn't really need
to limit myid to 255, but instead what we need is the lower 8 bits to be
different across all server ids in the config. For example, 1024, 2048, 4096
form a bad set of ids for a 3-server ensemble. This should work in the 3.4
branch, but that code in LeaderSessionTracker for local sessions might break it.
> Inconsistency between myid documentation and implementation
> -----------------------------------------------------------
>
> Key: ZOOKEEPER-2503
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2503
> Project: ZooKeeper
> Issue Type: Bug
> Components: server
> Affects Versions: 3.4.9, 3.5.2
> Reporter: Michael Han
> Fix For: 3.5.3, 3.4.10
>
>
> In ZK documentation, we have:
> "The myid file consists of a single line containing only the text of that
> machine's id. So myid of server 1 would contain the text "1" and nothing
> else. The id must be unique within the ensemble and should have a value
> between 1 and 255."
> This however is not enforced in code, which should be fixed either in
> documentation that we remove the restriction of the range 1-255 or in code we
> enforce such constraint.
> Discussion thread:
> http://zookeeper-user.578899.n2.nabble.com/Is-myid-actually-limited-to-1-255-td7581270.html
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