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https://issues.apache.org/jira/browse/HBASE-11985?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14137945#comment-14137945
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Lars Hofhansl commented on HBASE-11985:
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Do we also want to document server sizing guidelines?
I have a blog post about that here: 
http://hadoop-hbase.blogspot.com/2013/01/hbase-region-server-memory-sizing.html,
 feel free to copy anything you want (if any).

> Document sizing rules of thumb
> ------------------------------
>
>                 Key: HBASE-11985
>                 URL: https://issues.apache.org/jira/browse/HBASE-11985
>             Project: HBase
>          Issue Type: Task
>          Components: documentation
>            Reporter: Misty Stanley-Jones
>            Assignee: Misty Stanley-Jones
>
> I'm looking for tuning/sizing rules of thumb to put in the Ref Guide.
> Info I have gleaned so far:
> A reasonable region size is between 10 GB and 50 GB.
> A reasonable maximum cell size is 1 MB to 10 MB. If your cells are larger 
> than 10 MB, consider storing the cell contents in HDFS and storing a 
> reference to the location in HBase. Pending MOB work for 10 MB - 64 MB window.
> When you size your regions and cells, keep in mind that a region cannot split 
> across a row. If your row size is too large, or your region size is too 
> small, you can end up with a single row per region, which is not a good 
> pattern. It is also possible that one big column causes splits while other 
> columns are tiny, and this may not be great.
> A large # of columns probably means you are doing it wrong.
> Column names need to be short because they get stored for every value 
> (barring encoding). Don't need to be self-documenting like in RDBMS.



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