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From Sever Fundatureanu <fundatureanu.se...@gmail.com>
Subject HBase table disk usage
Date Tue, 03 Jul 2012 09:54:51 GMT

I have a simpel table with 1.5 billion rows and one column familiy 'F'.
Each row key is 33 bytes and the cell values are void. By doing the math I
would expect this table to take up (33+1)x1.5*10^9 = 51GB. However if I do
a "hadoop dfs -du" I get that the table takes up ~82GB. This is after
running major compactions a couple of times. Can someone explain where this
difference might come from?

Sever Fundatureanu

Vrije Universiteit Amsterdam
E-mail: fundatureanu.sever@gmail.com

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