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From Boris Tyukin <bo...@boristyukin.com>
Subject Re: Tablets Per Tablet Server
Date Thu, 29 Nov 2018 18:36:34 GMT
Mac, I asked the same question some time ago if you want to check out the
comments from Kudu team..There is also umbrella Jira below to support high
density nodes.



On Thu, Nov 29, 2018 at 12:58 PM Mac Noland <mcdonaldnoland@gmail.com>

> Good day,
> We have a number of customers using Kudu for a large number of tables from
> db/warehouse offload use cases and commonly run into situations where our
> tablets are over 2000 per tablet server.  Many of the tables are actually
> small, but with the minimum of 2 partitions and default of 3 replicas, we
> end up chewing up 6 tablets minimally for each table.  Being we have
> customers way over this and are running fine, we understand this is not a
> hard guideline, but overall does cause some concern with some customers
> knowing we are outside of the written guidelines.
> *The maximum number of tablets per tablet server is 2000,
> post-replication, but we recommend 1000 tablets or fewer per tablet server.*
> https://kudu.apache.org/docs/known_issues.html#_scale
> Do we know how this number was picked and if there is any work being done
> to look at what it would take to increase the number?  Or things we could
> contribute to help increase that number?  Not 100% sure what we'd be
> signing up for to do that, but always looking for opportunity to help.
> Thanks in advance.
> Mac

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