Return-Path: Delivered-To: apmail-hadoop-zookeeper-user-archive@minotaur.apache.org Received: (qmail 26484 invoked from network); 9 Jun 2010 23:15:44 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 9 Jun 2010 23:15:44 -0000 Received: (qmail 76134 invoked by uid 500); 9 Jun 2010 23:15:44 -0000 Delivered-To: apmail-hadoop-zookeeper-user-archive@hadoop.apache.org Received: (qmail 76004 invoked by uid 500); 9 Jun 2010 23:15:44 -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 75996 invoked by uid 99); 9 Jun 2010 23:15:44 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 09 Jun 2010 23:15:44 +0000 X-ASF-Spam-Status: No, hits=0.8 required=10.0 tests=AWL,FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of ted.dunning@gmail.com designates 209.85.212.176 as permitted sender) Received: from [209.85.212.176] (HELO mail-px0-f176.google.com) (209.85.212.176) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 09 Jun 2010 23:15:38 +0000 Received: by pxi10 with SMTP id 10so4452469pxi.35 for ; Wed, 09 Jun 2010 16:15:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:mime-version:received:in-reply-to :references:from:date:message-id:subject:to:cc:content-type; bh=3aiEmPUHDwZsDHnfhKcymHoVhrZF6KjvfiliAnzqG84=; b=GUgWdqZ7KJ6qKM16x1HaTvo5Cgf1Mg+cUW7sUMjz3itjksJbT6MvQRQj5Wk9akc3Hu u5gLULmMkRcVgpwZTd19fvM5rXt9rLizarx7Vj5g0RGrZL/gyEyplFd4rUHpDXK2cZYS hbxDpRgYgD7kB/dvEXu6zAEC+8gl/tvOrdvAg= 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=LC5cSFWg+7BfVGW8Wppewt2+7IA8g7caYDE4JgUoo0r9Ki1usRu4+iMCoeYOkxHCQ/ IbJHxVCm2J0jNcSfMCqsD7EWHLmyadn0EVYlHp2J8XRkqANBxJ94d/RenyafPJoUl8Fb gOm0kUpB/oe9HyELr6DCjLvICtknr8a5HmVfo= Received: by 10.141.124.2 with SMTP id b2mr7732445rvn.23.1276125318074; Wed, 09 Jun 2010 16:15:18 -0700 (PDT) MIME-Version: 1.0 Received: by 10.141.13.18 with HTTP; Wed, 9 Jun 2010 16:14:58 -0700 (PDT) In-Reply-To: References: <78A3B8B0-DD3C-4DF6-8B28-E868E990A92B@proofpoint.com> <4C0FE1D5.5060708@apache.org> From: Ted Dunning Date: Wed, 9 Jun 2010 16:14:58 -0700 Message-ID: Subject: Re: Debugging help for SessionExpiredException To: zookeeper-user@hadoop.apache.org Cc: Jordan Zimmerman Content-Type: multipart/alternative; boundary=00032556144e45d0880488a11418 --00032556144e45d0880488a11418 Content-Type: text/plain; charset=UTF-8 This can depend on which kind of instance you invoke as well. The smallest instances disappear for short periods of time and that can lead to surprises. On Wed, Jun 9, 2010 at 3:35 PM, Lei Zhang wrote: > On EC2 (still CentOS as guest OS), we consistently run into zk session > expire issue when our cluster is under heavy load. I am planning to raise > scheduling priority of zk server, but haven't done testing. > --00032556144e45d0880488a11418--