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 F3DDA17A9A for ; Wed, 8 Oct 2014 15:23:35 +0000 (UTC) Received: (qmail 33708 invoked by uid 500); 8 Oct 2014 15:23:35 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 33574 invoked by uid 500); 8 Oct 2014 15:23:35 -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 33555 invoked by uid 99); 8 Oct 2014 15:23:35 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 08 Oct 2014 15:23:35 +0000 Date: Wed, 8 Oct 2014 15:23:35 +0000 (UTC) From: "stack (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HBASE-12203) Remove Master from table status query path. 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-12203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14163611#comment-14163611 ] stack commented on HBASE-12203: ------------------------------- What did you think of the discussion over on HBASE-12035 [~octo47]? Would be cool if we didn't have to add new functionality to zk -- even as a cache-only. [~enis] mentions the namespace table over on HBASE-12035... could this keep table state too? > Remove Master from table status query path. > ------------------------------------------- > > Key: HBASE-12203 > URL: https://issues.apache.org/jira/browse/HBASE-12203 > Project: HBase > Issue Type: Improvement > Components: Client, master > Affects Versions: 2.0.0 > Reporter: Andrey Stepachev > Priority: Minor > Fix For: 1.0.0, 2.0.0 > > > With patch HBASE-7767 we moved table statuses from ZK to HDFS. That was a good cleanup, but we put additional (substantial) load on master. Some client requests use checks for table state (for example HBASE-12035). > Thats is why patch was not back ported to branch1 (HBASE-11978) > Lets replicate state back to zk, but as a mirror of table states. > What can be done: > 1. TableStateManager would push table state changes to zk > 2. Return back ZKTableStateClientSideReader. -- This message was sent by Atlassian JIRA (v6.3.4#6332)