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 E1EBC18C81 for ; Mon, 21 Mar 2016 19:58:26 +0000 (UTC) Received: (qmail 81728 invoked by uid 500); 21 Mar 2016 19:58:25 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 81664 invoked by uid 500); 21 Mar 2016 19:58:25 -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 81635 invoked by uid 99); 21 Mar 2016 19:58:25 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 21 Mar 2016 19:58:25 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id A08FD2C1F68 for ; Mon, 21 Mar 2016 19:58:25 +0000 (UTC) Date: Mon, 21 Mar 2016 19:58:25 +0000 (UTC) From: "Wei-Chiu Chuang (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-10187) Add a "list" refresh handler to list all registered refresh identifiers/handlers 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-10187?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15204985#comment-15204985 ] Wei-Chiu Chuang commented on HDFS-10187: ---------------------------------------- Test failures are all known bugs and unrelated. The checkstyle warning need to be addressed though. > Add a "list" refresh handler to list all registered refresh identifiers/handlers > -------------------------------------------------------------------------------- > > Key: HDFS-10187 > URL: https://issues.apache.org/jira/browse/HDFS-10187 > Project: Hadoop HDFS > Issue Type: New Feature > Affects Versions: 2.7.2 > Reporter: Wei-Chiu Chuang > Assignee: Wei-Chiu Chuang > Labels: commandline, supportability > Attachments: HDFS-10187.001.patch > > > HADOOP-10376 added a new feature to register handlers for refreshing daemon configurations, because name node properties can be reconfigured without restarting the daemon. This can be a very useful generic interface, but so far no real handlers have been registered using this interface. I added a new 'list' handler to list all registered handlers. My plan is to add more handlers in the future using this interface. > Another minor fix is return a more explicit error message to the client if a handler is not registered. (It is currently logged at namenode side, but client side only gets a "Failed to get response." message without knowing why) -- This message was sent by Atlassian JIRA (v6.3.4#6332)