Return-Path: Delivered-To: apmail-hadoop-mapreduce-issues-archive@minotaur.apache.org Received: (qmail 98858 invoked from network); 14 Aug 2009 23:11:33 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 14 Aug 2009 23:11:33 -0000 Received: (qmail 3473 invoked by uid 500); 14 Aug 2009 23:11:40 -0000 Delivered-To: apmail-hadoop-mapreduce-issues-archive@hadoop.apache.org Received: (qmail 3370 invoked by uid 500); 14 Aug 2009 23:11:39 -0000 Mailing-List: contact mapreduce-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: mapreduce-issues@hadoop.apache.org Delivered-To: mailing list mapreduce-issues@hadoop.apache.org Received: (qmail 3269 invoked by uid 99); 14 Aug 2009 23:11:39 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 14 Aug 2009 23:11:39 +0000 X-ASF-Spam-Status: No, hits=-2000.0 required=10.0 tests=ALL_TRUSTED X-Spam-Check-By: apache.org Received: from [140.211.11.140] (HELO brutus.apache.org) (140.211.11.140) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 14 Aug 2009 23:11:36 +0000 Received: from brutus (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id 228D8234C1EB for ; Fri, 14 Aug 2009 16:11:15 -0700 (PDT) Message-ID: <1750011215.1250291475140.JavaMail.jira@brutus> Date: Fri, 14 Aug 2009 16:11:15 -0700 (PDT) From: "Aaron Kimball (JIRA)" To: mapreduce-issues@hadoop.apache.org Subject: [jira] Updated: (MAPREDUCE-875) Make DBRecordReader execute queries lazily In-Reply-To: <76629960.1250291475048.JavaMail.jira@brutus> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 X-Virus-Checked: Checked by ClamAV on apache.org [ https://issues.apache.org/jira/browse/MAPREDUCE-875?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Aaron Kimball updated MAPREDUCE-875: ------------------------------------ Status: Patch Available (was: Open) > Make DBRecordReader execute queries lazily > ------------------------------------------ > > Key: MAPREDUCE-875 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-875 > Project: Hadoop Map/Reduce > Issue Type: Improvement > Reporter: Aaron Kimball > Assignee: Aaron Kimball > Attachments: MAPREDUCE-875.patch > > > DBInputFormat's DBRecordReader executes the user's SQL query in the constructor. If the query is long-running, this can cause task timeout. The user is unable to spawn a background thread (e.g., in a MapRunnable) to inform Hadoop of on-going progress. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.