Return-Path: X-Original-To: apmail-cassandra-user-archive@www.apache.org Delivered-To: apmail-cassandra-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 DEFF89DB6 for ; Fri, 17 Feb 2012 13:00:49 +0000 (UTC) Received: (qmail 79335 invoked by uid 500); 17 Feb 2012 13:00:47 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 79307 invoked by uid 500); 17 Feb 2012 13:00:47 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 79295 invoked by uid 99); 17 Feb 2012 13:00:47 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 17 Feb 2012 13:00:47 +0000 X-ASF-Spam-Status: No, hits=-0.0 required=5.0 tests=RCVD_IN_DNSWL_LOW,SPF_NEUTRAL X-Spam-Check-By: apache.org Received-SPF: neutral (athena.apache.org: local policy) Received: from [74.125.82.172] (HELO mail-we0-f172.google.com) (74.125.82.172) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 17 Feb 2012 13:00:39 +0000 Received: by werg1 with SMTP id g1so1162587wer.31 for ; Fri, 17 Feb 2012 05:00:18 -0800 (PST) MIME-Version: 1.0 Received: by 10.180.86.198 with SMTP id r6mr3550471wiz.22.1329483618525; Fri, 17 Feb 2012 05:00:18 -0800 (PST) Received: by 10.180.104.200 with HTTP; Fri, 17 Feb 2012 05:00:18 -0800 (PST) X-Originating-IP: [128.179.67.51] Date: Fri, 17 Feb 2012 14:00:18 +0100 Message-ID: Subject: cassandra on ec2 lock-ups From: Pierre-Yves Ritschard To: user Content-Type: text/plain; charset=ISO-8859-1 X-Gm-Message-State: ALoCoQk6dlcnvL1jKa37YnqiZiGTUwbAp5rHbtuHDPXWYFet6lRdMvlGxviYqhs48tbsxT9NUrc3 Hi, I've experienced several node lock-ups on EC2 instances. I'm running with the following set-up: heap-new: 800M max-heap: 8G instance type: m2.xlarge java is java version "1.6.0_26" Java(TM) SE Runtime Environment (build 1.6.0_26-b03) Java HotSpot(TM) 64-Bit Server VM (build 20.1-b02, mixed mode) running on ubuntu 11.04 and the apache cassandra packages + jna installed All my initial tokens are computed and set in cassandra.yaml according to the number of nodes present, the seed list is the ip of the first node. I am seeing a very strange behavior where on startup a node will lock-up the machine, ssh is still possible but ps hangs on the cassandra process which seems to be doing nothing.