Return-Path: X-Original-To: apmail-incubator-hama-dev-archive@minotaur.apache.org Delivered-To: apmail-incubator-hama-dev-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id B8CDD90DF for ; Mon, 21 May 2012 13:16:43 +0000 (UTC) Received: (qmail 82775 invoked by uid 500); 21 May 2012 13:16:43 -0000 Delivered-To: apmail-incubator-hama-dev-archive@incubator.apache.org Received: (qmail 82317 invoked by uid 500); 21 May 2012 13:16:42 -0000 Mailing-List: contact hama-dev-help@incubator.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: hama-dev@incubator.apache.org Delivered-To: mailing list hama-dev@incubator.apache.org Received: (qmail 81597 invoked by uid 99); 21 May 2012 13:16:42 -0000 Received: from issues-vm.apache.org (HELO issues-vm) (140.211.11.160) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 21 May 2012 13:16:42 +0000 Received: from isssues-vm.apache.org (localhost [127.0.0.1]) by issues-vm (Postfix) with ESMTP id E40CB141822 for ; Mon, 21 May 2012 13:16:41 +0000 (UTC) Date: Mon, 21 May 2012 13:16:41 +0000 (UTC) From: "Thomas Jungblut (JIRA)" To: hama-dev@incubator.apache.org Message-ID: <1913677957.3130.1337606201939.JavaMail.jiratomcat@issues-vm> In-Reply-To: <2073768274.42367.1331271957304.JavaMail.tomcat@hel.zones.apache.org> Subject: [jira] [Assigned] (HAMA-531) Data re-partitioning in BSPJobClient 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/HAMA-531?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Jungblut reassigned HAMA-531: ------------------------------------ Assignee: Thomas Jungblut > Data re-partitioning in BSPJobClient > ------------------------------------ > > Key: HAMA-531 > URL: https://issues.apache.org/jira/browse/HAMA-531 > Project: Hama > Issue Type: Improvement > Reporter: Edward J. Yoon > Assignee: Thomas Jungblut > > The re-partitioning the data is a very expensive operation. By the way, currently, we processes read/write operations sequentially using HDFS api in BSPJobClient from client-side. This causes potential too many open files error, contains HDFS overheads, and shows slow performance. > We have to find another way to re-partitioning data. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira