From issues-return-111240-archive-asf-public=cust-asf.ponee.io@hive.apache.org Mon Apr 2 20:49:04 2018 Return-Path: X-Original-To: archive-asf-public@cust-asf.ponee.io Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by mx-eu-01.ponee.io (Postfix) with SMTP id 8A42A180627 for ; Mon, 2 Apr 2018 20:49:03 +0200 (CEST) Received: (qmail 23590 invoked by uid 500); 2 Apr 2018 18:49:02 -0000 Mailing-List: contact issues-help@hive.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@hive.apache.org Delivered-To: mailing list issues@hive.apache.org Received: (qmail 23581 invoked by uid 99); 2 Apr 2018 18:49:02 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd1-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 02 Apr 2018 18:49:02 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd1-us-west.apache.org (ASF Mail Server at spamd1-us-west.apache.org) with ESMTP id 55A24C654F for ; Mon, 2 Apr 2018 18:49:02 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd1-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -110.311 X-Spam-Level: X-Spam-Status: No, score=-110.311 tagged_above=-999 required=6.31 tests=[ENV_AND_HDR_SPF_MATCH=-0.5, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, USER_IN_DEF_SPF_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mx1-lw-us.apache.org ([10.40.0.8]) by localhost (spamd1-us-west.apache.org [10.40.0.7]) (amavisd-new, port 10024) with ESMTP id eDje1ccJNbH8 for ; Mon, 2 Apr 2018 18:49:01 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTP id 90E1A5F1B9 for ; Mon, 2 Apr 2018 18:49:01 +0000 (UTC) Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id C08B4E0383 for ; Mon, 2 Apr 2018 18:49:00 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id 3C7C225610 for ; Mon, 2 Apr 2018 18:49:00 +0000 (UTC) Date: Mon, 2 Apr 2018 18:49:00 +0000 (UTC) From: "Deepak Jaiswal (JIRA)" To: issues@hive.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HIVE-18910) Migrate to Murmur hash for shuffle and bucketing MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/HIVE-18910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Deepak Jaiswal updated HIVE-18910: ---------------------------------- Attachment: HIVE-18910.17.patch > Migrate to Murmur hash for shuffle and bucketing > ------------------------------------------------ > > Key: HIVE-18910 > URL: https://issues.apache.org/jira/browse/HIVE-18910 > Project: Hive > Issue Type: Task > Reporter: Deepak Jaiswal > Assignee: Deepak Jaiswal > Priority: Major > Attachments: HIVE-18910.1.patch, HIVE-18910.10.patch, HIVE-18910.11.patch, HIVE-18910.12.patch, HIVE-18910.13.patch, HIVE-18910.14.patch, HIVE-18910.15.patch, HIVE-18910.16.patch, HIVE-18910.17.patch, HIVE-18910.2.patch, HIVE-18910.3.patch, HIVE-18910.4.patch, HIVE-18910.5.patch, HIVE-18910.6.patch, HIVE-18910.7.patch, HIVE-18910.8.patch, HIVE-18910.9.patch > > > Hive uses JAVA hash which is not as good as murmur for better distribution and efficiency in bucketing a table. > Migrate to murmur hash but still keep backward compatibility for existing users so that they dont have to reload the existing tables. -- This message was sent by Atlassian JIRA (v7.6.3#76005)