From common-user-return-20287-apmail-hadoop-common-user-archive=hadoop.apache.org@hadoop.apache.org Thu Feb 04 21:32:33 2010 Return-Path: Delivered-To: apmail-hadoop-common-user-archive@www.apache.org Received: (qmail 97211 invoked from network); 4 Feb 2010 21:32:33 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 4 Feb 2010 21:32:33 -0000 Received: (qmail 69770 invoked by uid 500); 4 Feb 2010 21:32:30 -0000 Delivered-To: apmail-hadoop-common-user-archive@hadoop.apache.org Received: (qmail 69690 invoked by uid 500); 4 Feb 2010 21:32:30 -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 69680 invoked by uid 99); 4 Feb 2010 21:32:30 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 04 Feb 2010 21:32:30 +0000 X-ASF-Spam-Status: No, hits=-0.0 required=10.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: local policy) Received: from [209.85.216.204] (HELO mail-px0-f204.google.com) (209.85.216.204) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 04 Feb 2010 21:32:22 +0000 Received: by pxi42 with SMTP id 42so4294199pxi.5 for ; Thu, 04 Feb 2010 13:32:01 -0800 (PST) MIME-Version: 1.0 Received: by 10.142.152.14 with SMTP id z14mr1052537wfd.252.1265319121209; Thu, 04 Feb 2010 13:32:01 -0800 (PST) In-Reply-To: <77938bc21002041321u5cd7a39r6c7d4384291bf41e@mail.gmail.com> References: <77938bc21002041303o10fb2fc8vc32cd8f37b8ba115@mail.gmail.com> <45f85f71002041305v1a1effa0le2cdbe784073ec@mail.gmail.com> <77938bc21002041321u5cd7a39r6c7d4384291bf41e@mail.gmail.com> From: Todd Lipcon Date: Thu, 4 Feb 2010 13:31:41 -0800 Message-ID: <45f85f71002041331u271a682em8666e56e75779085@mail.gmail.com> Subject: Re: What framework Hadoop uses for daemonizing? To: common-user@hadoop.apache.org Content-Type: text/plain; charset=ISO-8859-1 X-Virus-Checked: Checked by ClamAV on apache.org On Thu, Feb 4, 2010 at 1:21 PM, Stas Oskin wrote: > Hi Todd. > > Hadoop doesn't daemonize itself. The shell scripts use nohup and a lot >> of bash code to achieve a similar idea. >> >> > Was there any design decision behind this approach? > It long predates my involvement in the project. In fact, it predates Hadoop itself - it got inherited from Nutch long ago. I vaguely recall a JIRA about using jsvc for Hadoop - if you search around I bet you can turn it up. -Todd