Return-Path: Delivered-To: apmail-hadoop-zookeeper-user-archive@minotaur.apache.org Received: (qmail 8595 invoked from network); 2 Feb 2010 19:31:48 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 2 Feb 2010 19:31:48 -0000 Received: (qmail 43048 invoked by uid 500); 2 Feb 2010 19:31:47 -0000 Delivered-To: apmail-hadoop-zookeeper-user-archive@hadoop.apache.org Received: (qmail 43006 invoked by uid 500); 2 Feb 2010 19:31:47 -0000 Mailing-List: contact zookeeper-user-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: zookeeper-user@hadoop.apache.org Delivered-To: mailing list zookeeper-user@hadoop.apache.org Received: (qmail 42996 invoked by uid 99); 2 Feb 2010 19:31:47 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 02 Feb 2010 19:31:47 +0000 X-ASF-Spam-Status: No, hits=2.2 required=10.0 tests=HTML_MESSAGE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of ted.dunning@gmail.com designates 209.85.222.195 as permitted sender) Received: from [209.85.222.195] (HELO mail-pz0-f195.google.com) (209.85.222.195) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 02 Feb 2010 19:31:39 +0000 Received: by pzk33 with SMTP id 33so406357pzk.2 for ; Tue, 02 Feb 2010 11:31:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :from:date:message-id:subject:to:cc:content-type; bh=JZzryqyxYhyyRe3eh4UaCcCrPSVJ3I5OGAKTbK9VXsM=; b=PlY7YkhAXZQwd7s1zPw/3NXkKyfXfOgcNsc9SwHswc2mQGNDkDheIYG6T9YGnsYLd6 W0+Nc9+3yaSbq7H+k5gRGZA5+UZR1sqAt6PcZdIlydDCzeROyXSq1Kxnu5wkCIWqULqC fv8oyrLeNRh9ZE5+iACTc/udowHYmmxfYJgfE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; b=OkhpXPJeqGjKNY0nXwK+hxfIyfbuWo47l8CtFG1xjFG9LpXkoLUSM2vd731vHMBfU8 KX+ZFSErirpqItvwD8IzXM52h6EXDWldFjFNGvFvr/h8elVDh+1ppfz2FAmHO6NjQheA pwj/O0XEDsm1kSqYYwBd6TZe5UAQExLlXwQwM= MIME-Version: 1.0 Received: by 10.114.5.9 with SMTP id 9mr4294174wae.72.1265139078115; Tue, 02 Feb 2010 11:31:18 -0800 (PST) In-Reply-To: <4B6879BE.9000804@apache.org> References: <4B66C97D.8050804@knipp.de> <4B67D5E8.9020505@knipp.de> <4B6879BE.9000804@apache.org> From: Ted Dunning Date: Tue, 2 Feb 2010 11:30:58 -0800 Message-ID: Subject: Re: question regarding connectionloss To: zookeeper-user@hadoop.apache.org Cc: Michael.Bauland@knipp.de Content-Type: multipart/alternative; boundary=0016e6407f0e57b01e047ea32531 X-Virus-Checked: Checked by ClamAV on apache.org --0016e6407f0e57b01e047ea32531 Content-Type: text/plain; charset=UTF-8 I have found that ZK is an excellent diagnostic tool for misconfigured systems. Every time I have seen excessive connection loss rates, it has not been Zookeeper itself, but instead indicated problems on the client side. On Tue, Feb 2, 2010 at 11:15 AM, Patrick Hunt wrote: > For example "Hardware misconfiguration - NIC" caused one system to > basically work, but with huge numbers of connection loss, esp whenever there > was load (and I've seen this particular issue twice now). > -- Ted Dunning, CTO DeepDyve --0016e6407f0e57b01e047ea32531--