stack commented on HBASE-16765:

+1 on patch. On commit add more on how this is different to the default in the 
class comment. Should we make this the default since it less aggressive? Can be 
new issue.

> Improve IncreasingToUpperBoundRegionSplitPolicy
> -----------------------------------------------
>                 Key: HBASE-16765
>                 URL: https://issues.apache.org/jira/browse/HBASE-16765
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>         Attachments: 16765-0.98.txt
> We just did some experiments on some larger clusters and found that while 
> using IncreasingToUpperBoundRegionSplitPolicy generally works well and is 
> very convenient, it does tend to produce too many regions.
> Since the logic is - by design - local, checking the number of regions of the 
> table in question on the local server only, we end with more regions then 
> necessary.

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