keith-turner commented on issue #3178:
URL: https://github.com/apache/accumulo/issues/3178#issuecomment-1420092874
> I think that's something users can already do outside of Accumulo (such
as with the hostname, or some other external group file) and using either the
HostRegexTableLoadBalancer or a custom balancer.
In the kubernetes case this is not so easy when you have an auto-scaled
group of tservers that is dynamically allocated ip addresses. When running
scan servers and compactors in kubernetes it was so easy to start them with a
group specified on the command line and have the rest of the system respond
automatically as those different groups scaled up and down.
Even for clusters of machines I think this group option is nice because it
makes the Accumulo config indifferent to the specifics of the cluster. So I can
use the same accumulo config on two different cluster with different IP
address+hostnames and if I start 10 tservers in group A and 20 in group B on
each cluster, then same config will behave the same on both clusters. Where
with the regex config I have to adapt the config to the cluster or try to adapt
the clusters ips and hostnames to the config. So it makes it easier to have
reproducible behavior across clusters.
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