Return-Path: X-Original-To: apmail-hadoop-common-dev-archive@www.apache.org Delivered-To: apmail-hadoop-common-dev-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 130F977A7 for ; Tue, 9 Aug 2011 19:13:15 +0000 (UTC) Received: (qmail 87882 invoked by uid 500); 9 Aug 2011 19:13:14 -0000 Delivered-To: apmail-hadoop-common-dev-archive@hadoop.apache.org Received: (qmail 87775 invoked by uid 500); 9 Aug 2011 19:13:13 -0000 Mailing-List: contact common-dev-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: common-dev@hadoop.apache.org Delivered-To: mailing list common-dev@hadoop.apache.org Received: (qmail 87767 invoked by uid 99); 9 Aug 2011 19:13:13 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 09 Aug 2011 19:13:13 +0000 X-ASF-Spam-Status: No, hits=-0.7 required=5.0 tests=RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of harsh@cloudera.com designates 74.125.83.48 as permitted sender) Received: from [74.125.83.48] (HELO mail-gw0-f48.google.com) (74.125.83.48) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 09 Aug 2011 19:13:07 +0000 Received: by gwj22 with SMTP id 22so324517gwj.35 for ; Tue, 09 Aug 2011 12:12:46 -0700 (PDT) Received: by 10.236.193.74 with SMTP id j50mr3933479yhn.63.1312917166259; Tue, 09 Aug 2011 12:12:46 -0700 (PDT) MIME-Version: 1.0 Received: by 10.236.44.35 with HTTP; Tue, 9 Aug 2011 12:12:26 -0700 (PDT) In-Reply-To: <32224940.post@talk.nabble.com> References: <32224940.post@talk.nabble.com> From: Harsh J Date: Wed, 10 Aug 2011 00:42:26 +0530 Message-ID: Subject: Re: Architectural Questions To: common-dev@hadoop.apache.org Content-Type: text/plain; charset=ISO-8859-1 X-Virus-Checked: Checked by ClamAV on apache.org Hadoop doesn't use derby. It does, however, use HSQLDB for its external DB I/O and example components. On Tue, Aug 9, 2011 at 3:43 PM, JSaravanaKumar wrote: > > can you please help me in understanding Why Derby is used along with Hadoop ? > -- > View this message in context: http://old.nabble.com/Architectural-Questions-tp32224940p32224940.html > Sent from the Hadoop core-dev mailing list archive at Nabble.com. > > -- Harsh J