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Re: Linear Partioning vs Ordinary
Posted by: Mattias Jonsson
Date: March 24, 2010 09:23AM

The LINEAR HASH/KEY partitioning distribution of rows is such that it does not need to redistribute all the rows when adding/coalesce partitions, so if you add one partition, one existing partition will be redistributed into two partitions, and if you coalesce one partition then two partitions will be joined into one.

So in practice the distribution will vary from equal to 1:2 between the partitions, it is easy to verify by add or coalesce one partition.

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