Return-Path: Delivered-To: apmail-hadoop-common-user-archive@www.apache.org Received: (qmail 77198 invoked from network); 9 Nov 2010 04:20:21 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 9 Nov 2010 04:20:21 -0000 Received: (qmail 65696 invoked by uid 500); 9 Nov 2010 04:20:50 -0000 Delivered-To: apmail-hadoop-common-user-archive@hadoop.apache.org Received: (qmail 65527 invoked by uid 500); 9 Nov 2010 04:20:46 -0000 Mailing-List: contact common-user-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: common-user@hadoop.apache.org Delivered-To: mailing list common-user@hadoop.apache.org Received: (qmail 65519 invoked by uid 99); 9 Nov 2010 04:20:45 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 09 Nov 2010 04:20:45 +0000 X-ASF-Spam-Status: No, hits=-0.1 required=10.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_MED,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of hsreekumar@clickable.com designates 74.125.149.77 as permitted sender) Received: from [74.125.149.77] (HELO na3sys009aog106.obsmtp.com) (74.125.149.77) by apache.org (qpsmtpd/0.29) with SMTP; Tue, 09 Nov 2010 04:20:36 +0000 Received: from source ([74.125.82.44]) by na3sys009aob106.postini.com ([74.125.148.12]) with SMTP ID DSNKTNjL/RGNlIkIROO2UzNEvmEiSGwM5GTk@postini.com; Mon, 08 Nov 2010 20:20:15 PST Received: by wwi18 with SMTP id 18so274213wwi.13 for ; Mon, 08 Nov 2010 20:20:13 -0800 (PST) MIME-Version: 1.0 Received: by 10.227.146.195 with SMTP id i3mr6260686wbv.164.1289276413094; Mon, 08 Nov 2010 20:20:13 -0800 (PST) Received: by 10.227.37.20 with HTTP; Mon, 8 Nov 2010 20:20:13 -0800 (PST) In-Reply-To: References: Date: Tue, 9 Nov 2010 09:50:13 +0530 Message-ID: Subject: Re: Making Changes to mapred-site.xml From: Hari Sreekumar To: common-user@hadoop.apache.org Content-Type: multipart/alternative; boundary=001485f44d489eadf70494970e45 X-Virus-Checked: Checked by ClamAV on apache.org --001485f44d489eadf70494970e45 Content-Type: text/plain; charset=ISO-8859-1 Hi, I have seen that restarting the mapreduce daemons is enough in that case (stop-mapred and start-mapred). In fact, if you change just the properties relevant only to tasktracker, you just need to restart the tasktracker on each node or that specific node where you want the change to take effect. (e.g map.tasks.maximum etc.) hari On Tue, Nov 9, 2010 at 6:31 AM, bichonfrise74 wrote: > If I change the values in mapred-site.xml, do I need to restart the whole > hadoop cluster to see the effect? > > Thanks. > --001485f44d489eadf70494970e45--