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https://issues.apache.org/jira/browse/KUDU-3476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17907173#comment-17907173
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Alexey Serbin commented on KUDU-3476:
-------------------------------------
Hi [~derek.huang],
{quote}
I have uploaded a patch allowing multiple tables in --tables flag. I also
updated the output of table distribution details when range rebalancing is
applied to to multiple tables with mixed partition schema. The patch is
available at https://gerrit.cloudera.org/#/c/22239/ . Could you please take a
look?
{quote
Ah, that's great! Thanks a lot for the patch -- I'm planning to take a like
tonight or tomorrow. I appreciate you are working on this!
> Make replica placement range and table aware
> --------------------------------------------
>
> Key: KUDU-3476
> URL: https://issues.apache.org/jira/browse/KUDU-3476
> Project: Kudu
> Issue Type: New Feature
> Components: master, tserver
> Reporter: Mahesh Reddy
> Assignee: Mahesh Reddy
> Priority: Major
> Fix For: 1.17.0
>
>
> The current replica placement algorithm uses the power of two choices
> algorithm. This algorithm randomly selects tservers and places the replica on
> the tserver with less replicas. This can lead to potential hotspotting as it
> doesn't discriminate by range or table so many tablets from the same
> range/table can be disproportionally distributed.
> With this new feature, the replicas will be placed in a way that the tablets
> per range will be equally distributed amongst the available tservers. If
> multiple tservers have the same amount of replicas per range, then the
> tserver with less replicas for that table will be selected. If multiple
> tservers have the same amount of replicas for that table, the tserver with
> less total replicas will be chosen.
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