Return-Path: X-Original-To: apmail-hadoop-general-archive@minotaur.apache.org Delivered-To: apmail-hadoop-general-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 6CD838F63 for ; Tue, 16 Aug 2011 05:26:55 +0000 (UTC) Received: (qmail 89348 invoked by uid 500); 16 Aug 2011 05:26:52 -0000 Delivered-To: apmail-hadoop-general-archive@hadoop.apache.org Received: (qmail 88100 invoked by uid 500); 16 Aug 2011 05:26:30 -0000 Mailing-List: contact general-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: general@hadoop.apache.org Delivered-To: mailing list general@hadoop.apache.org Received: (qmail 88086 invoked by uid 99); 16 Aug 2011 05:26:27 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 16 Aug 2011 05:26:27 +0000 X-ASF-Spam-Status: No, hits=-0.7 required=5.0 tests=RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of harsh@cloudera.com designates 209.85.218.48 as permitted sender) Received: from [209.85.218.48] (HELO mail-yi0-f48.google.com) (209.85.218.48) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 16 Aug 2011 05:26:20 +0000 Received: by yib17 with SMTP id 17so4875069yib.35 for ; Mon, 15 Aug 2011 22:25:59 -0700 (PDT) Received: by 10.236.116.168 with SMTP id g28mr14218947yhh.63.1313472359394; Mon, 15 Aug 2011 22:25:59 -0700 (PDT) MIME-Version: 1.0 Received: by 10.236.44.35 with HTTP; Mon, 15 Aug 2011 22:25:39 -0700 (PDT) In-Reply-To: References: From: Harsh J Date: Tue, 16 Aug 2011 10:55:39 +0530 Message-ID: Subject: Re: reconfigure number of map/reduce slots per machine without restart To: xiangpingbu@gmail.com, mapreduce-user@hadoop.apache.org Content-Type: text/plain; charset=ISO-8859-1 X-Virus-Checked: Checked by ClamAV on apache.org Yes, just restart the TaskTracker. There's no need to restart your JobTracker, so a rolling TT reconfigure+restart should get you going. P.s. general@ is for project wide general discussions, not user specific queries, which should go to mapreduce-user@ instead. Moving it there, with you as a recipient. (Bcc'd general@) On Sun, Aug 14, 2011 at 4:06 AM, Xiangping Bu wrote: > Hi, All > > Is that possible to reconfigure the number of map/red slots per > machine without restarting the Hadoop cluster? > > Thanks > > Xiangping > -- Harsh J