You are viewing a plain text version of this content. The canonical link for it is here.
Posted to user@cassandra.apache.org by Sagar Agrawal <sn...@gmail.com> on 2010/07/09 11:09:03 UTC
total disk space used on a node for a CF is too large than expected
row size is 10 KB and write count on a node for a CF is 1054451,
so ideally the total disk space used on that node by that CF should be
around 10 GB
but it's showing 23 GB
what else might be taking up so much space?
Thanks
Re: total disk space used on a node for a CF is too large than
expected
Posted by Schubert Zhang <zs...@gmail.com>.
Disk space includes:
1. Live SSTable files (Data, Index, Filter)
2. Garbage (compacted) SSTable files.
For each column, except for the value bytes, there are anditional bytes
include (2+columnname+1+8)
On Sat, Jul 10, 2010 at 2:57 AM, Jonathan Ellis <jb...@gmail.com> wrote:
> you should read the "cassandra disk space utilization" thread.
>
> On Fri, Jul 9, 2010 at 4:09 AM, Sagar Agrawal <sn...@gmail.com> wrote:
> > row size is 10 KB and write count on a node for a CF is 1054451,
> > so ideally the total disk space used on that node by that CF should be
> > around 10 GB
> > but it's showing 23 GB
> > what else might be taking up so much space?
> >
> > Thanks
> >
>
>
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of Riptano, the source for professional Cassandra support
> http://riptano.com
>
Re: total disk space used on a node for a CF is too large than
expected
Posted by Jonathan Ellis <jb...@gmail.com>.
you should read the "cassandra disk space utilization" thread.
On Fri, Jul 9, 2010 at 4:09 AM, Sagar Agrawal <sn...@gmail.com> wrote:
> row size is 10 KB and write count on a node for a CF is 1054451,
> so ideally the total disk space used on that node by that CF should be
> around 10 GB
> but it's showing 23 GB
> what else might be taking up so much space?
>
> Thanks
>
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com
Re: total disk space used on a node for a CF is too large than
expected
Posted by Sagar Agrawal <sn...@gmail.com>.
what does WriteCount signify actually, it should also include writes which
are replicas right? It is total no of writes on that node for that CFtill
now, right ?
On Fri, Jul 9, 2010 at 2:39 PM, Sagar Agrawal <sn...@gmail.com> wrote:
> row size is 10 KB and write count on a node for a CF is 1054451,
> so ideally the total disk space used on that node by that CF should be
> around 10 GB
> but it's showing 23 GB
> what else might be taking up so much space?
>
> Thanks
>