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 48944F0CE for ; Sun, 7 Apr 2013 04:41:21 +0000 (UTC) Received: (qmail 35391 invoked by uid 500); 7 Apr 2013 04:41:21 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 35334 invoked by uid 500); 7 Apr 2013 04:41:21 -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 35324 invoked by uid 99); 7 Apr 2013 04:41:20 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 07 Apr 2013 04:41:20 +0000 Date: Sun, 7 Apr 2013 04:41:20 +0000 (UTC) From: "stack (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HBASE-6471) Performance regression caused by HBASE-4054 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-6471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] stack updated HBASE-6471: ------------------------- Fix Version/s: (was: 0.95.0) 0.94.2 Fix up after bulk move overwrote some 0.94.2 fix versions w/ 0.95.0 (Noticed by Lars Hofhansl) > Performance regression caused by HBASE-4054 > ------------------------------------------- > > Key: HBASE-6471 > URL: https://issues.apache.org/jira/browse/HBASE-6471 > Project: HBase > Issue Type: Bug > Components: Client > Affects Versions: 0.92.0 > Reporter: Lars George > Assignee: Jimmy Xiang > Priority: Critical > Fix For: 0.94.2 > > Attachments: trunk-6471.patch, trunk-6471.patch, trunk-6471_v2.patch > > > The patch in HBASE-4054 switches the PooledHTable to extend HTable as opposed to implement HTableInterface. > Since HTable does not have an empty constructor, the patch added a call to the super() constructor, which though does trigger the ZooKeeper and META scan, causing a considerable delay. > With multiple threads using the pool in parallel, the first thread is holding up all the subsequent ones, in effect it negates the whole reason we have a HTable pool. > We should complete HBASE-5728, or alternatively add a protected, empty constructor the HTable. I am +1 for the former. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira