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https://issues.apache.org/jira/browse/ACCUMULO-4022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14948734#comment-14948734
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Dave Marion commented on ACCUMULO-4022:
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* Need to consider how to load balance scans between the read-write and
read-only tablets.
* Can there be more than one read-only copy of a tablet?
> Create a concept of multi-homed tablets
> ---------------------------------------
>
> Key: ACCUMULO-4022
> URL: https://issues.apache.org/jira/browse/ACCUMULO-4022
> Project: Accumulo
> Issue Type: Wish
> Components: client, tserver
> Reporter: marco polo
> Labels: newbie, performance
>
> I'm an accumulo newbie, but I wish to see the concept of multi-homed tablets.
> This allows us to have tablets hosted by multiple servers, with only one
> being writable against it. This concept would allow n receiver servers for a
> tablet. An example might be a tablet that has become a hot spot could be
> dynamically hosted elsewhere, and clients could pick this up as a potential.
> Consistency must be kept between the hosts, as the initial read/write host
> may compact or write to that tablet.
> To me the larger problem may come from live ingest in which the write ahead
> log has not been flushed. To avoid having to write to the read only servers
> in a pipeline, we would likely need to create a model of enforcing reads only
> after a flush of that tablet or a thrift interface to allow reading only the
> data in memory to ensure consistency is enforced. I haven't given great
> thought to solving this yet.
> Please comment with ideas and pitfalls as I would like to see this wish come
> to fruition with actionable tickets after some community thought.
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