Return-Path: Delivered-To: apmail-hadoop-core-dev-archive@www.apache.org Received: (qmail 98864 invoked from network); 15 Mar 2009 11:46:07 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 15 Mar 2009 11:46:07 -0000 Received: (qmail 73807 invoked by uid 500); 15 Mar 2009 11:46:01 -0000 Delivered-To: apmail-hadoop-core-dev-archive@hadoop.apache.org Received: (qmail 73775 invoked by uid 500); 15 Mar 2009 11:46:00 -0000 Mailing-List: contact core-dev-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: core-dev@hadoop.apache.org Delivered-To: mailing list core-dev@hadoop.apache.org Received: (qmail 73764 invoked by uid 99); 15 Mar 2009 11:46:00 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 15 Mar 2009 04:46:00 -0700 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 (athena.apache.org: domain of alexandnpu@gmail.com designates 209.85.198.228 as permitted sender) Received: from [209.85.198.228] (HELO rv-out-0506.google.com) (209.85.198.228) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 15 Mar 2009 11:45:53 +0000 Received: by rv-out-0506.google.com with SMTP id k40so2368555rvb.29 for ; Sun, 15 Mar 2009 04:45:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:content-type; bh=X7o2Pk74qdsxwoOEIg/bqItUF72t9dXA5KhSbL2NI3g=; b=oW+UwgE6rCBLrx6ygOGUN/yOgdxBHAmEiahiWWHr23XvFZO3Vo2nSINE0IBBCcOIdj r1P7CIuXu06LrUejrY7uN6F1u7Tk7CVZ8OcTq66QqIBCGzi5egSq0xN7Z8oCCbU9zLnF wQDTdp2/YQz58VFZZnfED6PaQEGKRNnp2KnFY= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=s5BIjBRLWUD9HxZtbvMdrnu8MmTkTCLPpgJ7yelRstlg3OYUfEAsTzDbxDqVjbXdLd HKnJ9WZS7E8jCpDqYrMKA3ADxgVLpbttMMHbpRUJEJ+owIAFBRhd7yTur7UsJjX/ogr/ T4zbRLlDuzG5ykx056S6migOXFqlnI4n1YC0E= MIME-Version: 1.0 Received: by 10.114.153.18 with SMTP id a18mr2416564wae.200.1237117532898; Sun, 15 Mar 2009 04:45:32 -0700 (PDT) Date: Sun, 15 Mar 2009 19:45:32 +0800 Message-ID: Subject: what is the relation between the classes at the very beginning? From: Alex Zheng To: core-dev@hadoop.apache.org Content-Type: multipart/alternative; boundary=00163646cb4e180622046526df51 X-Virus-Checked: Checked by ClamAV on apache.org --00163646cb4e180622046526df51 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit I am a newer for Hadoop, and am reading the code of Hadoop for a week now i am very puzzled by the relation of so many classes after i run : bin/start-all.sh I know there are JobTrackerInstrumentation, JobTracker, Namenode etc so what is the order of their initialization? and after bin/start-all.sh and before i run any job, what exits in the system? thanks for your reply! --00163646cb4e180622046526df51--