Return-Path: 
 <issues-return-68887-apmail-hbase-issues-archive=hbase.apache.org@hbase.apache.org>
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 F32ACDBE9
	for <apmail-hbase-issues-archive@www.apache.org>;
 Sat, 17 Nov 2012 16:46:12 +0000 (UTC)
Received: (qmail 54578 invoked by uid 500); 17 Nov 2012 16:46:12 -0000
Delivered-To: apmail-hbase-issues-archive@hbase.apache.org
Received: (qmail 54426 invoked by uid 500); 17 Nov 2012 16:46:12 -0000
Mailing-List: contact issues-help@hbase.apache.org; run by ezmlm
Precedence: bulk
List-Help: <mailto:issues-help@hbase.apache.org>
List-Unsubscribe: <mailto:issues-unsubscribe@hbase.apache.org>
List-Post: <mailto:issues@hbase.apache.org>
List-Id: <issues.hbase.apache.org>
Delivered-To: mailing list issues@hbase.apache.org
Received: (qmail 54407 invoked by uid 99); 17 Nov 2012 16:46:12 -0000
Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28)
    by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 17 Nov 2012 16:46:12 +0000
Date: Sat, 17 Nov 2012 16:46:12 +0000 (UTC)
From: "Lars Hofhansl (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <112823518.127712.1353170772297.JavaMail.jiratomcat@arcas>
In-Reply-To: <759564144.12369.1350939133387.JavaMail.jiratomcat@arcas>
Subject: [jira] [Commented] (HBASE-7026) Make metrics collection in
 StoreScanner.java more efficient
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-7026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13499459#comment-13499459 ] 

Lars Hofhansl commented on HBASE-7026:
--------------------------------------

Indeed it's from HBASE-6410
                
> Make metrics collection in StoreScanner.java more efficient
> -----------------------------------------------------------
>
>                 Key: HBASE-7026
>                 URL: https://issues.apache.org/jira/browse/HBASE-7026
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Karthik Ranganathan
>            Assignee: Karthik Ranganathan
>
> Per the benchmarks I ran, the following block of code seems to be inefficient:
> StoreScanner.java:
> public synchronized boolean next(List<KeyValue> outResult, int limit,
>       String metric) throws IOException {
> // ...
>       // update the counter 
>       if (addedResultsSize > 0 && metric != null) {
>         HRegion.incrNumericMetric(this.metricNamePrefix + metric, 
>             addedResultsSize);
>       }
> // ...
> Removing this block increased throughput by 10%. We should move this to the outer layer.

--
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