Return-Path: X-Original-To: apmail-hadoop-common-user-archive@www.apache.org Delivered-To: apmail-hadoop-common-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 780B9D5B3 for ; Tue, 14 Aug 2012 13:48:15 +0000 (UTC) Received: (qmail 86902 invoked by uid 500); 14 Aug 2012 13:48:10 -0000 Delivered-To: apmail-hadoop-common-user-archive@hadoop.apache.org Received: (qmail 86676 invoked by uid 500); 14 Aug 2012 13:48:10 -0000 Mailing-List: contact user-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@hadoop.apache.org Delivered-To: mailing list user@hadoop.apache.org Received: (qmail 86669 invoked by uid 99); 14 Aug 2012 13:48:10 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 14 Aug 2012 13:48:10 +0000 X-ASF-Spam-Status: No, hits=-0.5 required=5.0 tests=FREEMAIL_ENVFROM_END_DIGIT,FSL_RCVD_USER,RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of donofrio111@gmail.com designates 209.85.213.176 as permitted sender) Received: from [209.85.213.176] (HELO mail-yx0-f176.google.com) (209.85.213.176) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 14 Aug 2012 13:48:01 +0000 Received: by yenm12 with SMTP id m12so547618yen.35 for ; Tue, 14 Aug 2012 06:47:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; bh=DeD/Dx6dyfsXyq2IgG0X5LcQumnXVq+CXGj7zrIm1uo=; b=GEFQ+u72xzUcIBXHZgU25l4Zl9//WGA7p4mI4RwOU8XN4SVvXBcx6qGgYyb0F4dh0s HAdCb9epwPTCwajm5/u86NTzqV4crTKOy7wWmSpSEkWsJ/uxEZDTJnCsFUkxoeoWFWFl /C3ac+pp+z7NyGrnYgV5zadQn8AAM83Z0x6TUQAU6kUHvMYHSIkbpyhYmHwuWpIx1mlK 154NV7gLUXYvpRp8vtbJtGUarzFWX66zRzDmvv8vtnnSBxhvcUoyGHpBBNA/t2C2meOq w5rQy1fZcSBt1lwDR4u1KyoZBYyAHpb+HVeiMIg4l5sNRVNiCBY1OcWFuGN601K0SQ38 4gyA== Received: by 10.236.117.168 with SMTP id j28mr14895489yhh.88.1344952060773; Tue, 14 Aug 2012 06:47:40 -0700 (PDT) Received: from [192.168.0.2] (c-68-55-55-92.hsd1.md.comcast.net. [68.55.55.92]) by mx.google.com with ESMTPS id e5sm4897416yhi.12.2012.08.14.06.47.39 (version=SSLv3 cipher=OTHER); Tue, 14 Aug 2012 06:47:40 -0700 (PDT) Message-ID: <502A56F2.7060200@gmail.com> Date: Tue, 14 Aug 2012 09:47:30 -0400 From: Jim Donofrio User-Agent: Mozilla/5.0 (X11; Linux i686; rv:14.0) Gecko/20120717 Thunderbird/14.0 MIME-Version: 1.0 To: user@hadoop.apache.org Subject: do comparators need to be thread safe? Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Do comparators set via JobConf.setOutputKeyComparator or JobConf.setOutputValueGroupingComparator and not through WritableComparator.define need to be thread safe?