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 E5F9A10C9E for ; Wed, 3 Dec 2014 00:33:13 +0000 (UTC) Received: (qmail 40422 invoked by uid 500); 3 Dec 2014 00:33:12 -0000 Delivered-To: apmail-hive-dev-archive@hive.apache.org Received: (qmail 40350 invoked by uid 500); 3 Dec 2014 00:33:12 -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 40339 invoked by uid 500); 3 Dec 2014 00:33:12 -0000 Delivered-To: apmail-hadoop-hive-dev@hadoop.apache.org Received: (qmail 40336 invoked by uid 99); 3 Dec 2014 00:33:12 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 03 Dec 2014 00:33:12 +0000 Date: Wed, 3 Dec 2014 00:33:12 +0000 (UTC) From: "Szehon Ho (JIRA)" To: hive-dev@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HIVE-8943) Fix memory limit check for combine nested mapjoins [Spark Branch] 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-8943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14232388#comment-14232388 ] Szehon Ho commented on HIVE-8943: --------------------------------- Ah good catch, let me add that. > Fix memory limit check for combine nested mapjoins [Spark Branch] > ----------------------------------------------------------------- > > Key: HIVE-8943 > URL: https://issues.apache.org/jira/browse/HIVE-8943 > Project: Hive > Issue Type: Sub-task > Components: Spark > Affects Versions: spark-branch > Reporter: Szehon Ho > Assignee: Szehon Ho > Attachments: HIVE-8943.1-spark.patch, HIVE-8943.1-spark.patch, HIVE-8943.2-spark.patch, HIVE-8943.3-spark.patch, HIVE-8943.4-spark.patch, HIVE-8943.5-spark.patch > > > Its the opposite problem of what we thought in HIVE-8701. > SparkMapJoinOptimizer does combine nested mapjoins into one work due to removal of RS for big-table. So we need to enhance the check to calculate if all the MapJoins in that work (spark-stage) will fit into the memory, otherwise it might overwhelm memory for that particular spark executor. -- This message was sent by Atlassian JIRA (v6.3.4#6332)