hadoop-zookeeper-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Benjamin Reed" <br...@yahoo-inc.com>
Subject RE: Watches are one time trigger?
Date Tue, 18 Nov 2008 17:10:50 GMT
Watches also do not have any data associated with them, so even if they were not one-time,
you would not get any extra information and you have the potential of generating a lot of
extra network traffic.

ben

-----Original Message-----
From: Mahadev Konar [mailto:mahadev@yahoo-inc.com] 
Sent: Tuesday, November 18, 2008 8:38 AM
To: zookeeper-user@hadoop.apache.org
Subject: Re: Watches are one time trigger?

Hi Thomas,
 Yes, watches are one time triggers. Watches are supposed to be lighweight
and local to the server you are connected to.
We designed it such that it has minimum load impact on the servers.

mahadev


On 11/18/08 5:58 AM, "Kiesslich, Thomas" <thomas.kiesslich@siemens.com>
wrote:

> 
>  Hi, 
> 
> A watch is designed as a one time trigger. Why have you designed it that way?
> Why not as a normal listener?
> 
> 
> Mit freundlichen Grüßen / With best regards
> Thomas Kießlich 
> 
> Siemens Enterprise Communications GmbH & Co. KG
> HiPath Applications
> 
> SEN LIP DA 11
> Schertlinstr. 8
> 81379 Munich, Germany 


Mime
View raw message