Misty Stanley-Jones created HBASE-11985:
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Summary: 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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