Hi All,
I have a query regarding the insert operation. The insert operation by default
inserts an new row or updates an existing row. Is it possible to prevent an
update but allow only inserts automatically ( especially when multiple clients
are writing to cassandra)? I was wondering if
From the Cassandra documentation @ riptano I see the following recommendation
for Heap size setting
MemtableThroughputInMB * 3 * (number of ColumnFamilies) + 1G + (size of
internal
caches)
What if there is more than one keyspace in the system ? Assuming each keyspace
has the same number of
Good point..
Thanks to both of you for the replies.
Kannan
From: Matthew Dennis mden...@riptano.com
To: user@cassandra.apache.org
Sent: Thu, October 7, 2010 4:59:28 PM
Subject: Re: Heap Settings suggestions
Keep in mind that .7 and on will have per-CF
Subject: Re: Cassandra Cache Mbean values; bytes or number of elements ?
elements.
it gets the capacity from your configuration setting. cassandra knows
how many rows you have, and you told it to cache all of them, so
that's what it set capacity to.
On Fri, Sep 17, 2010 at 8:58 PM, kannan
I am using 0.6.5 and my keycache for the CF is set as 100% ... What do the
values in the Mbean interfaces indicate ? bytes or number of elements ?
Specifically, these are the numbers that I observe for one of the column
family...
capacity = 36826888 (if this is number of elements, how does
Thanks a lot Jonathan !!!
Kannan
From: Jonathan Ellis jbel...@gmail.com
To: user@cassandra.apache.org
Sent: Mon, September 13, 2010 4:47:05 PM
Subject: Re: Couple of cache related questions
On Sun, Sep 12, 2010 at 6:10 PM, kannan chandrasekaran
ckanna
Thank you for the clarification...very helpful
Kannan
From: Rob Coli rc...@digg.com
To: user@cassandra.apache.org
Sent: Fri, September 10, 2010 12:55:14 PM
Subject: Re: How to drop a keyspace in 0.6.5?
On 9/10/10 10:10 AM, kannan chandrasekaran wrote:
Thank
the
data files), you drop KS the same way.
On Thu, Sep 9, 2010 at 10:31 PM, kannan chandrasekaran
ckanna...@yahoo.com wrote:
Hi All,
I understand that how to drop the column family from the a node using
http://wiki.apache.org/cassandra/FAQ#modify_cf_config . How can I drop an
entire Keyspace
Thanks for the replies My comments in Bold...
Kannan
From: Gary Dusbabek gdusba...@gmail.com
To: user@cassandra.apache.org
Sent: Thu, September 9, 2010 5:43:31 AM
Subject: Re: Few questions regarding cassandra deployment on windows
On Tue, Sep 7, 2010 at 17:42, kannan chandrasekaran ckanna
Hi All,
I understand that how to drop the column family from the a node using
http://wiki.apache.org/cassandra/FAQ#modify_cf_config . How can I drop an
entire
Keyspace ? If I drop all the CF's in the Keyspace will the keyspace be
automatically dropped ?
Thanks
Kannan
is yes, he did it, so ...
From: kannan chandrasekaran
Sent: Wednesday, September 08, 2010 1:20 AM
To: user@cassandra.apache.org
Subject: Re: Few questions regarding cassandra deployment on windows
Can you please elaborate on why you think Cassandra would not be suitable for
this ?
Main
Hi All,
We are currently considering Cassandra for our application.
Platform:
* a single-node cluster.
* windows '08
* 64-bit jvm
For the sake of brevity let,
Cassandra service = a single node cassandra server running as an embedded
service inside a JVM
My use cases:
1) Start with a
: Tue, September 7, 2010 4:38:41 PM
Subject: Re: Few questions regarding cassandra deployment on windows
This does not sound like a good application for Cassandra at all. Why
are you using it?
On Tue, Sep 7, 2010 at 3:42 PM, kannan chandrasekaran
ckanna...@yahoo.com wrote:
Hi All,
We are currently
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