...@dude.podzone.net]
*Sent:* Friday, June 24, 2011 11:28 PM
*To:* user@cassandra.apache.org
*Subject:* Re: Cassandra ACID
Ok, here it is reworked; consider it a summary of the thread. If I
left out an important point that you think is 100% correct even if you
already mentioned it, then make some noise
, but not the others.
From: AJ [mailto:a...@dude.podzone.net]
Sent: Friday, June 24, 2011 11:28 PM
To: user@cassandra.apache.org
Subject: Re: Cassandra ACID
Ok, here it is reworked; consider it a summary of the thread. If I left
out an important point that you
That being said, we do not provide isolation, which means in particular
that
reads *can* return a state where only parts of a batch update seems applied
(and it would clearly be cool to have isolation and I'm not even
saying this will
never happen).
Out of curiosity, do you see any
Can any Cassandra contributors/guru's confirm my understanding of
Cassandra's degree of support for the ACID properties?
I provide official references when known. Please let me know if I
missed some good official documentation.
*Atomicity*
All individual writes are atomic at the row level.
Atomicity
All individual writes are atomic at the row level. So, a batch mutate for
one specific key will apply updates to all the columns for that one specific
row atomically. If part of the single-key batch update fails, then all of
the updates will be reverted since they all pertained to
On Fri, Jun 24, 2011 at 9:11 AM, Peter Schuller
peter.schul...@infidyne.com wrote:
Atomicity
All individual writes are atomic at the row level. So, a batch mutate for
one specific key will apply updates to all the columns for that one specific
row atomically. If part of the single-key batch
Ok, here it is reworked; consider it a summary of the thread. If I left
out an important point that you think is 100% correct even if you
already mentioned it, then make some noise about it and provide some
evidence so it's captured sufficiently. And, if you're in a debate,
please try and
Hi,
I have more questions on Cassandra ACID properties.
Say, I have a row that has 3 columns already: colA, colB and colC
And, if two *concurrent* clients perform a different insert(...) into the
same row,
one insert is for colD and the other insert is for colE.
Then, Cassandra would guarantee
instance of each row, from what I know. Maybe a dev can
confirm this.
On Tue, Jul 20, 2010 at 2:58 PM, Alex Yiu bigcontentf...@gmail.com wrote:
Hi,
I have more questions on Cassandra ACID properties.
Say, I have a row that has 3 columns already: colA, colB and colC
And, if two *concurrent* clients
Hi, all,
(Jonathan Ellis, Jonathan Shook, Aaron Morton)
Thanks for the confirmation.
JonE, the update wording has been added to wiki page w.r.t. to insert and
mutation API.
Regards,
Alex Yiu
On Tue, Jul 20, 2010 at 2:02 PM, Jonathan Ellis jbel...@gmail.com wrote:
On Tue, Jul 20, 2010 at
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