From issues-return-443787-archive-asf-public=cust-asf.ponee.io@hbase.apache.org Thu Jul 9 07:46:04 2020 Return-Path: X-Original-To: archive-asf-public@cust-asf.ponee.io Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [207.244.88.153]) by mx-eu-01.ponee.io (Postfix) with SMTP id E675B180663 for ; Thu, 9 Jul 2020 09:46:03 +0200 (CEST) Received: (qmail 26419 invoked by uid 500); 9 Jul 2020 07:46:03 -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 26380 invoked by uid 99); 9 Jul 2020 07:46:03 -0000 Received: from mailrelay1-us-west.apache.org (HELO mailrelay1-us-west.apache.org) (209.188.14.139) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 09 Jul 2020 07:46:03 +0000 Received: from jira-he-de.apache.org (static.172.67.40.188.clients.your-server.de [188.40.67.172]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id 5062B417A7 for ; Thu, 9 Jul 2020 07:46:02 +0000 (UTC) Received: from jira-he-de.apache.org (localhost.localdomain [127.0.0.1]) by jira-he-de.apache.org (ASF Mail Server at jira-he-de.apache.org) with ESMTP id 6E522781F28 for ; Thu, 9 Jul 2020 07:46:00 +0000 (UTC) Date: Thu, 9 Jul 2020 07:46:00 +0000 (UTC) From: "Duo Zhang (Jira)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HBASE-11288) Splittable Meta 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-11288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17154294#comment-17154294 ] Duo Zhang commented on HBASE-11288: ----------------------------------- Let me put up the problems and the solutions for the two solutions again. For general root table, there are two problems: 1. '2-tier' of assignment/initialzation/bootstraping on master start up and fail recovery. A 'possible' solution is: run ITBLL to see if it works. Time cost: 2. how to distribute load of the general root table. Read replicas feature has been dropped. The current statement is that we could also implement cache servers for a general root table, but we need a clear design. Time cost: For master local region, there is one problem: 1. Master is on the critical path of client normal read/write. The solution is to introduce cache servers for root table content. We have discussed this a lot in the design doc but seems [~stack] removed most of the content. Anyway, there is a issue HBASE-24459 for it, I can start working on it soon to show how to implement cache servers. Time cost: within two weeks. Do you agree with the above statements? [~toffer]. Thanks. > Splittable Meta > --------------- > > Key: HBASE-11288 > URL: https://issues.apache.org/jira/browse/HBASE-11288 > Project: HBase > Issue Type: Umbrella > Components: meta > Reporter: Francis Christopher Liu > Assignee: Francis Christopher Liu > Priority: Major > -- This message was sent by Atlassian Jira (v8.3.4#803005)