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 D190217A28 for ; Tue, 7 Oct 2014 19:16:34 +0000 (UTC) Received: (qmail 25584 invoked by uid 500); 7 Oct 2014 19:16:34 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 25534 invoked by uid 500); 7 Oct 2014 19:16:34 -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 25523 invoked by uid 99); 7 Oct 2014 19:16:34 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 07 Oct 2014 19:16:34 +0000 Date: Tue, 7 Oct 2014 19:16:34 +0000 (UTC) From: "Andrew Purtell (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HBASE-12016) Reduce number of versions in Meta table. Make it configurable 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-12016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14162341#comment-14162341 ] Andrew Purtell commented on HBASE-12016: ---------------------------------------- bq. I think we need to remove checks for isTableModifiable here. Only validate that table exists. Sure, the table doesn't need to be modifiable, the call to checkTableModifiable was a convenient shortcut to existence testing (if IIRC). > Reduce number of versions in Meta table. Make it configurable > ------------------------------------------------------------- > > Key: HBASE-12016 > URL: https://issues.apache.org/jira/browse/HBASE-12016 > Project: HBase > Issue Type: Improvement > Affects Versions: 2.0.0 > Reporter: Andrey Stepachev > Assignee: Andrey Stepachev > Priority: Minor > Fix For: 2.0.0, 0.98.8, 0.99.1 > > Attachments: HBASE-12016.patch, HBASE-12016.patch, HBASE-12016.patch, HBASE-12016.patch, HBASE-12016.patch, HBASE-12016.patch, HBASE-12016.patch > > > Currently meta keeps up to 10 versions of each KV. > For big metas it leads to substantial memory overhead and scan slowdowns. > (see https://issues.apache.org/jira/browse/HBASE-11165 ) > Need to keep reasonable number of versions (suggested value is 3). > Number of versions configurable via parameter: hbase.meta.versions -- This message was sent by Atlassian JIRA (v6.3.4#6332)