Return-Path: Delivered-To: apmail-incubator-pig-dev-archive@locus.apache.org Received: (qmail 48215 invoked from network); 10 Mar 2008 22:27:54 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 10 Mar 2008 22:27:54 -0000 Received: (qmail 42324 invoked by uid 500); 10 Mar 2008 22:27:51 -0000 Delivered-To: apmail-incubator-pig-dev-archive@incubator.apache.org Received: (qmail 42253 invoked by uid 500); 10 Mar 2008 22:27:51 -0000 Mailing-List: contact pig-dev-help@incubator.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: pig-dev@incubator.apache.org Delivered-To: mailing list pig-dev@incubator.apache.org Received: (qmail 42244 invoked by uid 99); 10 Mar 2008 22:27:51 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 10 Mar 2008 15:27:51 -0700 X-ASF-Spam-Status: No, hits=2.0 required=10.0 tests=HTML_MESSAGE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of pi.songs@gmail.com designates 209.85.132.246 as permitted sender) Received: from [209.85.132.246] (HELO an-out-0708.google.com) (209.85.132.246) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 10 Mar 2008 22:27:12 +0000 Received: by an-out-0708.google.com with SMTP id b33so485094ana.83 for ; Mon, 10 Mar 2008 15:27:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:mime-version:content-type; bh=JJSjNWQyk5DXWYY4v++haB7aPdLnWstECY0TlMDpbqA=; b=ZDX0zu/y3SQiMtz/YZ5fLNGZupeAetDh8njYF2w11X75+Ffya5YWgjnHdKkm8tgeQ7byVzCLqODU3TE+dxn/UuYoBC3dQiYkzv/AiZY1j1yzzbrlzfPO6q1nWSC9inxbcRIJJ7+3Kvu2xAszEnN97J5hOHSpt4HlJF/AJSA0Yok= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:mime-version:content-type; b=CwsHMUsMW7U6tC7GydikFRm08NTW0aHw+7g4Bq7Ua9Ekq8Nf8iz01RR43IR4YxU9j5YNrFqJZ5M1uZ3yLi42mZdGReh2DmyTkjd8UZRumtj+Rws0EoKlL60tLjIMbl646FRf4Krjf90mr6YYX08/BGRvWlvfLwGEZRPymccmJTo= Received: by 10.100.95.19 with SMTP id s19mr11999770anb.9.1205188042581; Mon, 10 Mar 2008 15:27:22 -0700 (PDT) Received: by 10.100.96.6 with HTTP; Mon, 10 Mar 2008 15:27:22 -0700 (PDT) Message-ID: <1b29507a0803101527o27b78e32oa508934d1fb4114c@mail.gmail.com> Date: Tue, 11 Mar 2008 09:27:22 +1100 From: "pi song" To: pig-dev@incubator.apache.org Subject: Change in Pig Wiki MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_1019_6189646.1205188042552" X-Virus-Checked: Checked by ClamAV on apache.org ------=_Part_1019_6189646.1205188042552 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline I saw a change in Pig Wiki frontpage :- - [http://incubator.apache.org/pig/ Pig] is a platform for analyzing large data sets. Pig's language, Pig Latin, is a simple query algebra that lets you express data transformations such as merging data sets, filtering them, and applying functions to records or groups of records. Users can create their own functions to do special-purpose processing. + [http://incubator.apache.org/pig/ Pig] is a dataflow programming environment for processing very large files. Pig's language is called Pig Latin. A Pig Latin program consists of a directed acyclic graph where each node represents an operation that transforms data. Operations are of two flavors: (1) relational-algebra style operations such as join, filter, project; (2) functional-programming style operators such as map, reduce. Is there any change in philosophy? What is the difference between "a platform for analyzing large data sets" and "dataflow programming environment" ? Does the term "data flow programming environment" imply that Pig can run across multiple file systems at the same time? Cheers, Pi ------=_Part_1019_6189646.1205188042552--