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 F0227186E5 for ; Sat, 3 Oct 2015 06:18:26 +0000 (UTC) Received: (qmail 78770 invoked by uid 500); 3 Oct 2015 06:18:26 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 78708 invoked by uid 500); 3 Oct 2015 06:18:26 -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 78692 invoked by uid 99); 3 Oct 2015 06:18:26 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 03 Oct 2015 06:18:26 +0000 Date: Sat, 3 Oct 2015 06:18:26 +0000 (UTC) From: "Hudson (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HBASE-14539) Slight improvement of StoreScanner.optimize 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-14539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14942134#comment-14942134 ] Hudson commented on HBASE-14539: -------------------------------- FAILURE: Integrated in HBase-1.2 #222 (See [https://builds.apache.org/job/HBase-1.2/222/]) HBASE-14539 Slight improvement of StoreScanner.optimize. (larsh: rev 18160cfe903cee72b9b4d2af402df4adc78f6eee) * hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreScanner.java > Slight improvement of StoreScanner.optimize > ------------------------------------------- > > Key: HBASE-14539 > URL: https://issues.apache.org/jira/browse/HBASE-14539 > Project: HBase > Issue Type: Sub-task > Reporter: Lars Hofhansl > Assignee: Lars Hofhansl > Priority: Minor > Fix For: 2.0.0, 1.3.0, 0.98.15, 1.2.1, 1.0.3, 1.1.3 > > Attachments: 14539-0.98.txt > > > While looking at the code I noticed that StoreScanner.optimize does not some unnecessary work. This is a very tight loop and even just looking up a reference can throw off the CPUs cache lines. This does safe a few percent of performance (not a lot, though). -- This message was sent by Atlassian JIRA (v6.3.4#6332)