Return-Path: X-Original-To: apmail-hadoop-hdfs-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-hdfs-issues-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 930A81932D for ; Fri, 4 Mar 2016 18:58:42 +0000 (UTC) Received: (qmail 12108 invoked by uid 500); 4 Mar 2016 18:58:41 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 11981 invoked by uid 500); 4 Mar 2016 18:58:41 -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 11937 invoked by uid 99); 4 Mar 2016 18:58:41 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 04 Mar 2016 18:58:41 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 26AF32C1F84 for ; Fri, 4 Mar 2016 18:58:41 +0000 (UTC) Date: Fri, 4 Mar 2016 18:58:41 +0000 (UTC) From: "Chris Nauroth (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-9239) DataNode Lifeline Protocol: an alternative protocol for reporting DataNode liveness 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/HDFS-9239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15180374#comment-15180374 ] Chris Nauroth commented on HDFS-9239: ------------------------------------- The test failures are unrelated. The remaining style warnings are not worth addressing. [~szetszwo], would you please take a look at patch v003 and my comments that go with it? Thank you. > DataNode Lifeline Protocol: an alternative protocol for reporting DataNode liveness > ----------------------------------------------------------------------------------- > > Key: HDFS-9239 > URL: https://issues.apache.org/jira/browse/HDFS-9239 > Project: Hadoop HDFS > Issue Type: New Feature > Components: datanode, namenode > Reporter: Chris Nauroth > Assignee: Chris Nauroth > Attachments: DataNode-Lifeline-Protocol.pdf, HDFS-9239.001.patch, HDFS-9239.002.patch, HDFS-9239.003.patch > > > This issue proposes introduction of a new feature: the DataNode Lifeline Protocol. This is an RPC protocol that is responsible for reporting liveness and basic health information about a DataNode to a NameNode. Compared to the existing heartbeat messages, it is lightweight and not prone to resource contention problems that can harm accurate tracking of DataNode liveness currently. The attached design document contains more details. -- This message was sent by Atlassian JIRA (v6.3.4#6332)