Return-Path: X-Original-To: apmail-zookeeper-user-archive@www.apache.org Delivered-To: apmail-zookeeper-user-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 3B6DD90E3 for ; Wed, 8 Feb 2012 22:11:53 +0000 (UTC) Received: (qmail 76303 invoked by uid 500); 8 Feb 2012 22:11:52 -0000 Delivered-To: apmail-zookeeper-user-archive@zookeeper.apache.org Received: (qmail 76264 invoked by uid 500); 8 Feb 2012 22:11:52 -0000 Mailing-List: contact user-help@zookeeper.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@zookeeper.apache.org Delivered-To: mailing list user@zookeeper.apache.org Received: (qmail 76256 invoked by uid 99); 8 Feb 2012 22:11:52 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 08 Feb 2012 22:11:52 +0000 X-ASF-Spam-Status: No, hits=-5.0 required=5.0 tests=RCVD_IN_DNSWL_HI,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: local policy) Received: from [192.134.164.105] (HELO mail4-relais-sop.national.inria.fr) (192.134.164.105) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 08 Feb 2012 22:11:44 +0000 X-IronPort-AV: E=Sophos;i="4.73,386,1325458800"; d="scan'208";a="130640555" Received: from ip-74.net-82-216-76.rev.numericable.fr (HELO [192.168.0.12]) ([82.216.76.74]) by mail4-relais-sop.national.inria.fr with ESMTP/TLS/DHE-RSA-CAMELLIA256-SHA; 08 Feb 2012 23:11:24 +0100 Message-ID: <4F32F30B.8010204@inria.fr> Date: Wed, 08 Feb 2012 23:11:23 +0100 From: Pierre Louis Aublin User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.18) Gecko/20110617 Thunderbird/3.1.11 MIME-Version: 1.0 To: user@zookeeper.apache.org Subject: Re: use cases for asynchronous API References: <4F32F2A4.4070401@inria.fr> In-Reply-To: <4F32F2A4.4070401@inria.fr> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Checked: Checked by ClamAV on apache.org On 02/08/2012 11:09 PM, Pierre Louis Aublin wrote: > Hello everybody > > I would like to know if the asynchronous operations of the client API > are often used in applications that use Zookeeper. > In [1] I found 3 applications built on Zookeeper (the Yahoo! Fetching > Service, Katta and the Yahoo! Message Broker). However, I do not find > if they use the synchronous or asynchronous operations. > > The big question I am trying to answer is : is it relevant to consider > a closed-loop model in order to benchmark replicated services > (Zookeeper being a good candidate to build replicated services)? Can > you give me any clue on that? One must read open-loop model, not closed-loop. Sorry for that mistake.