Return-Path: Delivered-To: apmail-hadoop-mapreduce-user-archive@minotaur.apache.org Received: (qmail 11620 invoked from network); 21 Oct 2010 14:51:05 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 21 Oct 2010 14:51:05 -0000 Received: (qmail 50354 invoked by uid 500); 21 Oct 2010 14:51:04 -0000 Delivered-To: apmail-hadoop-mapreduce-user-archive@hadoop.apache.org Received: (qmail 50219 invoked by uid 500); 21 Oct 2010 14:51:01 -0000 Mailing-List: contact mapreduce-user-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: mapreduce-user@hadoop.apache.org Delivered-To: mailing list mapreduce-user@hadoop.apache.org Received: (qmail 50210 invoked by uid 99); 21 Oct 2010 14:51:01 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 21 Oct 2010 14:51:01 +0000 X-ASF-Spam-Status: No, hits=2.2 required=10.0 tests=FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,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 psdc1978@gmail.com designates 209.85.216.48 as permitted sender) Received: from [209.85.216.48] (HELO mail-qw0-f48.google.com) (209.85.216.48) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 21 Oct 2010 14:50:54 +0000 Received: by qwg8 with SMTP id 8so3711661qwg.35 for ; Thu, 21 Oct 2010 07:50:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:date:message-id :subject:from:to:content-type; bh=eLOkvLDMAHCjFmGKodGyGHwzzo9tcemc3KPuLYwLxhA=; b=n1NPE/3Var8cucxREiDPFWP57gtB50lgAD6iK5jMjerKiR5sl229rBDYL05SsIhprM T/ogHTJoL76e8I7U8YVF2vHKqo1MDweH2V6N3TNz6kZ+AVQzVGXomV9SnA5t1x6f+IBV QJeGoPt5P22FHWHmATzwX9ivOQN5SxBwxXg9s= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=CilYj+4M5tqykZcaMzoV6qdfwXkFzIuI+0g6MMvaCjujgUTFBUh5kouH1lULfZf9Aq QQC6S3maBcEli6FbHPWya7ER3i6miHDZXe09/1pgHZnFlsy1KS90WsjUuOZOd+ktBmzD Dusl833tzjakhg6u0c3L4ou2KthP5Pqj8Tr2s= MIME-Version: 1.0 Received: by 10.229.247.3 with SMTP id ma3mr915843qcb.1.1287672634002; Thu, 21 Oct 2010 07:50:34 -0700 (PDT) Received: by 10.229.69.160 with HTTP; Thu, 21 Oct 2010 07:50:33 -0700 (PDT) Date: Thu, 21 Oct 2010 15:50:33 +0100 Message-ID: Subject: What's the difference between a map output and a spill in Hadoop MR? From: Pedro Costa To: mapreduce-user@hadoop.apache.org Content-Type: text/plain; charset=ISO-8859-1 Hi, What's the difference between a map output and a spill in Hadoop MapReduce? Thanks, -- Pedro