Fo all who reply on this topic, thanks, for you patience and explanations
It's closer to 8x than 2x for small values. Java objects simply use a
lot more memory than you'd think, and it takes multiple objects to
store a column.
http://kohlerm.blogspot.com/2008/12/how-much-memory-is-used-by-my-java.html
On Mon, Mar 28, 2011 at 4:15 PM, ruslan usifov wrote:
>
>
> 2011/3/
Following shows how the size of memtable is updated:
currentThroughput.addAndGet(cf.size());
The jconsole/JMX shows this and this doesn't account for the overhead of
holding the data in in-memory data structures.
The size of CF, SuperColumn and Column is calculated as following:
Column Size:
pub
2011/3/29 Narendra Sharma
> This is because the memtable threshold is not correct to the last byte. The
> threshold basically account for column name, value and timestamp (or the
> serialized column). It doesn't account for all the in-memory overhead for
> maintaining the data and references etc.
