Lot of memtables means lot of sstables means lot of disk io.
On 9/7/10, Benjamin Black b...@b3k.us wrote:
On Mon, Sep 6, 2010 at 12:41 AM, Janne Jalkanen
janne.jalka...@ecyrd.com wrote:
So if I read this right, using lots of CF's is also a Bad Idea(tm)?
Yes, lots of CFs is bad means lots
On Mon, Sep 6, 2010 at 12:41 AM, Janne Jalkanen
janne.jalka...@ecyrd.com wrote:
So if I read this right, using lots of CF's is also a Bad Idea(tm)?
Yes, lots of CFs is bad means lots of CFs is also bad.
Yes, right now it's probably not technically possible, from a resource point of
view, to run 4k keyspaces in a cassandra cluster.
Those management features you may have been able to do as meta data operations
will prob become long running background tasks.
Aaron
On 3 Sep 2010, at 21:28, Mike
Very interesting. Thank you
So it sounds like other than being able to quickly truncate
customer-keyspaces, with Cassandra there's no real benefit in keeping
each customer data in a separate keyspace.
We'll suffer on the memory side with all the switching between keyspaces
and we're better
If I am correct than you need to restart cassandra whenever you adding a new
KeySpace. Thats another concern.
Vineet Daniel
Cell : +91-8106217121
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We're using 0.7
On 9/3/2010 6:48 AM, vineet daniel wrote:
If I am correct than you need to restart cassandra whenever you adding
a new KeySpace. Thats another concern.
Vineet Daniel
Cell : +91-8106217121
Websites :
Blog http://vinetedaniel.blogspot.com | Linkedin
Hi,
We're in the process of migrating 4,000 MySQL client databases to
Cassandra. All database schemas are identical.
With MySQL, we used to provision a separate 'database' per each client,
to make it easier to shard and move things around.
Does it make sense to migrate the 4,000 MySQL
Create one big happy love in keyspace. Use the key structure to identify the different clients data.The is more support for multi tenancy systems but a lot of the memory configuration is per keyspace/column family, so you cannot run that many keyspaces.This page has some more
