of dirty
data.
2010-03-31
Will
发件人: Ted Dunning ted.dunn...@gmail.com
发送时间: 2010-03-30 15:39
主 题: Re: Re: Re: How to ensure trasaction create-and-update
收件人: zookeeper-user@hadoop.apache.org
As I mentioned, you can keep state in the disk as an echo of the diskPair.
If you don't mind
i agree with ted. i think he points out some disadvantages with trying
do do more. there is a slippery slope with these kinds of things. the
implementation is complicated enough even with the simple model that we use.
ben
On 03/29/2010 08:34 PM, Ted Dunning wrote:
I perhaps should not have
As usual, Ben says better what I was trying to say.
Henry's point that a very limited multi-update would be useful is also true,
though. If somebody can come up with a way to do that without making things
unreasonably complicated, it would be really nice to have.
In the meantime, I will try to
This is not a good thing. ZK gains lots of its power and reliability by not
trying to do atomic updates to multiple znodes at once.
Can you say more about the update that you want to do? It is common for
updates like to be such that you can order the updates and do without a
truly atomic
DISK's state from DISK_OFFLINE to DISK_ONLINE,
these operations need to be done as a whole.
2010-03-30
Will
发件人: Ted Dunning ted.dunn...@gmail.com
发送时间: 2010-03-30 10:11
主 题: Re: How to ensure trasaction create-and-update
收件人: zookeeper-user@hadoop.apache.org
This is not a good thing. ZK
On 29 March 2010 19:10, Ted Dunning ted.dunn...@gmail.com wrote:
This is not a good thing. ZK gains lots of its power and reliability by
not
trying to do atomic updates to multiple znodes at once.
Ted -
Could you say a bit about how you feel ZK would sacrifice power and
reliability through
I perhaps should not have said power, except insofar as ZK's strengths are
in reliability which derives from simplicity.
There are essentially two common ways to implement multi-node update. The
first is the tradtional db style with begin-transaction paired with either a
commit or a rollback
as a whole.
2010-03-30
Will
发件人: Ted Dunning ted.dunn...@gmail.com
发送时间: 2010-03-30 10:11
主 题: Re: How to ensure trasaction create-and-update
收件人: zookeeper-user@hadoop.apache.org
This is not a good thing. ZK gains lots of its power and reliability by
not
trying to do atomic updates
