Return-Path: Delivered-To: apmail-hadoop-core-commits-archive@www.apache.org Received: (qmail 10050 invoked from network); 29 Aug 2008 01:43:13 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 29 Aug 2008 01:43:13 -0000 Received: (qmail 35396 invoked by uid 500); 29 Aug 2008 01:43:11 -0000 Delivered-To: apmail-hadoop-core-commits-archive@hadoop.apache.org Received: (qmail 35364 invoked by uid 500); 29 Aug 2008 01:43:11 -0000 Mailing-List: contact core-commits-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: core-dev@hadoop.apache.org Delivered-To: mailing list core-commits@hadoop.apache.org Received: (qmail 35355 invoked by uid 99); 29 Aug 2008 01:43:11 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 28 Aug 2008 18:43:11 -0700 X-ASF-Spam-Status: No, hits=-2000.0 required=10.0 tests=ALL_TRUSTED X-Spam-Check-By: apache.org Received: from [140.211.11.130] (HELO eos.apache.org) (140.211.11.130) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 29 Aug 2008 01:42:22 +0000 Received: from eos.apache.org (localhost [127.0.0.1]) by eos.apache.org (Postfix) with ESMTP id 36209118DE for ; Fri, 29 Aug 2008 01:42:52 +0000 (GMT) Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Apache Wiki To: core-commits@hadoop.apache.org Date: Fri, 29 Aug 2008 01:42:51 -0000 Message-ID: <20080829014251.27337.97269@eos.apache.org> Subject: [Hadoop Wiki] Update of "Hive/Roadmap" by ZhengShao X-Virus-Checked: Checked by ClamAV on apache.org Dear Wiki user, You have subscribed to a wiki page or wiki category on "Hadoop Wiki" for change notification. The following page has been changed by ZhengShao: http://wiki.apache.org/hadoop/Hive/Roadmap ------------------------------------------------------------------------------ #pragma section-numbers 2 = Roadmap/call to add more features = The following is the list of useful features that are on the Hive Roadmap: - * Multiple Group-By Inserts + * Multiple group-by inserts - - FROM src + * Generate multiple group-by results by scanning the source table only once + * Example: + * FROM src - SELECT src.adid, COUNT(src.userid), COUNT(DISTINCT src.userid) GROUP BY src.adid + * SELECT src.adid, COUNT(src.userid), COUNT(DISTINCT src.userid) GROUP BY src.adid - SELECT src.pageid, COUNT(src.userid), COUNT(DISTINCT src.userid) GROUP BY src.pageid + * SELECT src.pageid, COUNT(src.userid), COUNT(DISTINCT src.userid) GROUP BY src.pageid - + * SerDe refactoring, and DynamicSerDe + * Refactor SerDe library to make sure we can serialize/deserialize and let UDF handle complex objects. + * We will be able to write a Hive Query to write data into a table that uses thrift serialization.