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 A56311941F for ; Wed, 16 Mar 2016 15:42:34 +0000 (UTC) Received: (qmail 80874 invoked by uid 500); 16 Mar 2016 15:42:34 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 80767 invoked by uid 500); 16 Mar 2016 15:42:34 -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 80372 invoked by uid 99); 16 Mar 2016 15:42:34 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 16 Mar 2016 15:42:33 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id C5B562C1F76 for ; Wed, 16 Mar 2016 15:42:33 +0000 (UTC) Date: Wed, 16 Mar 2016 15:42:33 +0000 (UTC) From: "Nick Dimiduk (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HBASE-3521) region be merged with others automatically when all data in the region has expired and removed, or region gets too small. 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-3521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15197526#comment-15197526 ] Nick Dimiduk commented on HBASE-3521: ------------------------------------- This ticket was a top search hit for so adding a link to the new feature. > region be merged with others automatically when all data in the region has expired and removed, or region gets too small. > ------------------------------------------------------------------------------------------------------------------------- > > Key: HBASE-3521 > URL: https://issues.apache.org/jira/browse/HBASE-3521 > Project: HBase > Issue Type: Improvement > Components: master, regionserver, scripts > Affects Versions: 0.90.0 > Reporter: zhoushuaifeng > Priority: Minor > > We have test a cluster which have more than 30,000 regions, max size of a region is 512MB. At this situation, data no more growing, but remove some old data and insert new, and regions will be more and more. And some regions may be very small or empty. This occupies too much heapsize, and will be more if regions cannot be merged. This will limit hbase running for a long time. > A script that does a survey to remove empty regions, or pick out adjacent small regions that then does the online merge up seems like it would be useful. -- This message was sent by Atlassian JIRA (v6.3.4#6332)