Return-Path: X-Original-To: apmail-hadoop-mapreduce-user-archive@minotaur.apache.org Delivered-To: apmail-hadoop-mapreduce-user-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 658E81085E for ; Wed, 9 Oct 2013 21:17:30 +0000 (UTC) Received: (qmail 12334 invoked by uid 500); 9 Oct 2013 21:17:21 -0000 Delivered-To: apmail-hadoop-mapreduce-user-archive@hadoop.apache.org Received: (qmail 12183 invoked by uid 500); 9 Oct 2013 21:17:20 -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 12169 invoked by uid 99); 9 Oct 2013 21:17:19 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 09 Oct 2013 21:17:19 +0000 X-ASF-Spam-Status: No, hits=1.5 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of sfhadoop@gmail.com designates 209.85.212.175 as permitted sender) Received: from [209.85.212.175] (HELO mail-wi0-f175.google.com) (209.85.212.175) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 09 Oct 2013 21:17:12 +0000 Received: by mail-wi0-f175.google.com with SMTP id ez12so8992033wid.8 for ; Wed, 09 Oct 2013 14:16:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=AcXRF1cuccO5unzzDwb9jmqtmx+jcC3yg5bODztQc9o=; b=yoCrEHJmoBYgjq0hRtVb5FruooKq3Hsarj52Ozg0FxGfc0vAeGWTYUr5ZaX6u12h9G bFh75Qjubjefs71GpWLacAdsUTBUp+eGUJOrTvkfx4LFrCueqksTYy6VOxcMHzdA4I8d Xq/A4HY/bpb09jn+1k8U7DEQzFTSUmrlNZKKq8pYUDnKtK06UitJtxTZG+c5PdEIuOOd XI1EKcG89lkaoWobI4AFZIX2bEWs7z3PYsmTCm3DshDk1zSPHeH/PwYWTJuRtt65v3Xn FZACWJKtBVyB5pGndUTHB+e9bLw3G5sEs4EUJn3R8+XP0Kkm7WLw0r+EyfmcqW9/SCxs YjBw== MIME-Version: 1.0 X-Received: by 10.194.10.193 with SMTP id k1mr3799032wjb.50.1381353411656; Wed, 09 Oct 2013 14:16:51 -0700 (PDT) Received: by 10.194.179.35 with HTTP; Wed, 9 Oct 2013 14:16:51 -0700 (PDT) Date: Wed, 9 Oct 2013 14:16:51 -0700 Message-ID: Subject: Java version with Hadoop 2.0 From: SF Hadoop To: user@hadoop.apache.org Content-Type: multipart/alternative; boundary=047d7b5d4f786945f904e85567f8 X-Virus-Checked: Checked by ClamAV on apache.org --047d7b5d4f786945f904e85567f8 Content-Type: text/plain; charset=ISO-8859-1 I am preparing to deploy multiple cluster / distros of Hadoop for testing / benchmarking. In my research I have noticed discrepancies in the version of the JDK that various groups are using. Example: Hortonworks is suggesting JDK6u31, CDH recommends either 6 or 7 providing you stick to some guidelines for each and Apache Hadoop seems to be somewhat of a "no mans land"; a lot of people using a lot of different versions. Does anyone have any insight they could share about how to approach choosing the best JDK release? (I'm a total Java newb, so any info / further reading you guys can provide is appreciated.) Thanks. sf --047d7b5d4f786945f904e85567f8 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
I am preparing to deploy multiple cluster / distros of Had= oop for testing / benchmarking.

In my research I have no= ticed discrepancies in the version of the JDK that various groups are using= . =A0Example: =A0Hortonworks is suggesting JDK6u31, CDH recommends either 6= or 7 providing you stick to some guidelines for each and Apache Hadoop see= ms to be somewhat of a "no mans land"; a lot of people using a lo= t of different versions.

Does anyone have any insight they could share about how= to approach choosing the best JDK release? =A0(I'm a total Java newb, = so any info / further reading you guys can provide is appreciated.)

Thanks.

sf
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