Return-Path: X-Original-To: apmail-hbase-issues-archive@www.apache.org Delivered-To: apmail-hbase-issues-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 047F5D4F3 for ; Wed, 8 Aug 2012 00:19:11 +0000 (UTC) Received: (qmail 35226 invoked by uid 500); 8 Aug 2012 00:19:10 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 35184 invoked by uid 500); 8 Aug 2012 00:19:10 -0000 Mailing-List: contact issues-help@hbase.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list issues@hbase.apache.org Received: (qmail 35167 invoked by uid 99); 8 Aug 2012 00:19:10 -0000 Received: from issues-vm.apache.org (HELO issues-vm) (140.211.11.160) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 08 Aug 2012 00:19:10 +0000 Received: from isssues-vm.apache.org (localhost [127.0.0.1]) by issues-vm (Postfix) with ESMTP id 20ECD142855 for ; Wed, 8 Aug 2012 00:19:10 +0000 (UTC) Date: Wed, 8 Aug 2012 00:19:10 +0000 (UTC) From: "Zhihong Ted Yu (JIRA)" To: issues@hbase.apache.org Message-ID: <1450903575.2193.1344385150140.JavaMail.jiratomcat@issues-vm> In-Reply-To: <188416828.4033.1343885882613.JavaMail.jiratomcat@issues-vm> Subject: [jira] [Commented] (HBASE-6496) Example ZK based scan policy 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/HBASE-6496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13430762#comment-13430762 ] Zhihong Ted Yu commented on HBASE-6496: --------------------------------------- ZKWatcher creation / disposal can be avoided if you have a singleton ZKWatcher to be placed into shared data map first. If the placement was successful, a new ZKWatcher can be created and replace the singleton for the same key. > Example ZK based scan policy > ---------------------------- > > Key: HBASE-6496 > URL: https://issues.apache.org/jira/browse/HBASE-6496 > Project: HBase > Issue Type: Sub-task > Reporter: Lars Hofhansl > Assignee: Lars Hofhansl > Fix For: 0.96.0, 0.94.2 > > Attachments: 6496-v2.txt, 6496.txt > > > Provide an example of a RegionServer that listens to a ZK node to learn about what set of KVs can safely be deleted during a compaction. -- 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