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 5C0D610E44 for ; Thu, 5 Mar 2015 22:26:42 +0000 (UTC) Received: (qmail 88624 invoked by uid 500); 5 Mar 2015 22:26:39 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 88591 invoked by uid 500); 5 Mar 2015 22:26:39 -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 88580 invoked by uid 99); 5 Mar 2015 22:26:38 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 05 Mar 2015 22:26:38 +0000 Date: Thu, 5 Mar 2015 22:26:38 +0000 (UTC) From: "Nick Dimiduk (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HBASE-13103) [ergonomics] add region size balancing as a feature of master 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-13103?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Nick Dimiduk updated HBASE-13103: --------------------------------- Description: Often enough, folks miss-judge split points or otherwise end up with a suboptimal number of regions. We should have an automated, reliable way to "reshape" or "balance" a table's region boundaries. This would be for tables that contain existing data. This might look like: {noformat} Admin#reshapeTable(TableName, int numSplits); {noformat} or from the shell: {noformat} > reshape TABLE, numSplits {noformat} Better still would be to have a maintenance process, similar to the existing Balancer that runs AssignmentManager on an interval, to run the above "reshape" operation on an interval. That way, the cluster will automatically self-correct toward a desirable state. was: Often enough, folks miss-judge split points or otherwise end up with a suboptimal number of regions. We should have an automated, reliable way to "reshape" or "balance" a table's region boundaries. This would be for tables that contain existing data. This might look like: {noformat} Admin#reshapeTable(TableName, int numSplits); {noformat} or from the shell: {noformat} > reshape TABLE, numSplits {noformat} Summary: [ergonomics] add region size balancing as a feature of master (was: [ergonomics] add shell,API to "reshape" a table) > [ergonomics] add region size balancing as a feature of master > ------------------------------------------------------------- > > Key: HBASE-13103 > URL: https://issues.apache.org/jira/browse/HBASE-13103 > Project: HBase > Issue Type: Brainstorming > Components: Usability > Reporter: Nick Dimiduk > > Often enough, folks miss-judge split points or otherwise end up with a suboptimal number of regions. We should have an automated, reliable way to "reshape" or "balance" a table's region boundaries. This would be for tables that contain existing data. This might look like: > {noformat} > Admin#reshapeTable(TableName, int numSplits); > {noformat} > or from the shell: > {noformat} > > reshape TABLE, numSplits > {noformat} > Better still would be to have a maintenance process, similar to the existing Balancer that runs AssignmentManager on an interval, to run the above "reshape" operation on an interval. That way, the cluster will automatically self-correct toward a desirable state. -- This message was sent by Atlassian JIRA (v6.3.4#6332)