Return-Path: X-Original-To: apmail-hive-dev-archive@www.apache.org Delivered-To: apmail-hive-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 379BE11300 for ; Wed, 23 Jul 2014 19:01:41 +0000 (UTC) Received: (qmail 52526 invoked by uid 500); 23 Jul 2014 19:01:40 -0000 Delivered-To: apmail-hive-dev-archive@hive.apache.org Received: (qmail 52385 invoked by uid 500); 23 Jul 2014 19:01:40 -0000 Mailing-List: contact dev-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 dev@hive.apache.org Received: (qmail 52220 invoked by uid 500); 23 Jul 2014 19:01:40 -0000 Delivered-To: apmail-hadoop-hive-dev@hadoop.apache.org Received: (qmail 52217 invoked by uid 99); 23 Jul 2014 19:01:40 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 23 Jul 2014 19:01:40 +0000 Date: Wed, 23 Jul 2014 19:01:40 +0000 (UTC) From: "Lefty Leverenz (JIRA)" To: hive-dev@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HIVE-7397) Set the default threshold for fetch task conversion to 1Gb 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-7397?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Lefty Leverenz updated HIVE-7397: --------------------------------- Labels: Performance TODOC14 (was: Performance) > Set the default threshold for fetch task conversion to 1Gb > ---------------------------------------------------------- > > Key: HIVE-7397 > URL: https://issues.apache.org/jira/browse/HIVE-7397 > Project: Hive > Issue Type: Bug > Affects Versions: 0.14.0, 0.13.1 > Reporter: Gopal V > Assignee: Gopal V > Labels: Performance, TODOC14 > Fix For: 0.14.0 > > Attachments: HIVE-7397.1.patch, HIVE-7397.2.patch, HIVE-7397.3.patch, HIVE-7397.4.patch.txt, HIVE-7397.5.patch, HIVE-7397.6.patch.txt > > > Currently, modifying the value of hive.fetch.task.conversion to "more" results in a dangerous setting where small scale queries function, but large scale queries crash. > This occurs because the default threshold of -1 means apply this optimization for a petabyte table. > I am testing a variety of queries with the setting "more" (to make it the default option as suggested by HIVE-887) change the default threshold for this feature to a reasonable 1Gb. -- This message was sent by Atlassian JIRA (v6.2#6252)