Return-Path: Delivered-To: apmail-hadoop-hdfs-issues-archive@minotaur.apache.org Received: (qmail 89896 invoked from network); 2 Feb 2010 22:02:43 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 2 Feb 2010 22:02:43 -0000 Received: (qmail 11198 invoked by uid 500); 2 Feb 2010 22:02:43 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 11146 invoked by uid 500); 2 Feb 2010 22:02:43 -0000 Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: hdfs-issues@hadoop.apache.org Delivered-To: mailing list hdfs-issues@hadoop.apache.org Received: (qmail 11135 invoked by uid 99); 2 Feb 2010 22:02:43 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 02 Feb 2010 22:02:43 +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; Tue, 02 Feb 2010 22:02:40 +0000 Received: from brutus.apache.org (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id 3A1E6234C495 for ; Tue, 2 Feb 2010 14:02:19 -0800 (PST) Message-ID: <1502456391.35441265148139236.JavaMail.jira@brutus.apache.org> Date: Tue, 2 Feb 2010 22:02:19 +0000 (UTC) From: "Todd Lipcon (JIRA)" To: hdfs-issues@hadoop.apache.org Subject: [jira] Created: (HDFS-941) Datanode xceiver protocol should allow reuse of a connection 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 Datanode xceiver protocol should allow reuse of a connection ------------------------------------------------------------ Key: HDFS-941 URL: https://issues.apache.org/jira/browse/HDFS-941 Project: Hadoop HDFS Issue Type: Improvement Components: data-node, hdfs client Affects Versions: 0.22.0 Reporter: Todd Lipcon Right now each connection into the datanode xceiver only processes one operation. In the case that an operation leaves the stream in a well-defined state (eg a client reads to the end of a block successfully) the same connection could be reused for a second operation. This should improve random read performance significantly. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.