Return-Path: X-Original-To: apmail-hbase-user-archive@www.apache.org Delivered-To: apmail-hbase-user-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 8ACA096F8 for ; Thu, 14 Jun 2012 17:40:19 +0000 (UTC) Received: (qmail 50683 invoked by uid 500); 14 Jun 2012 17:40:17 -0000 Delivered-To: apmail-hbase-user-archive@hbase.apache.org Received: (qmail 50568 invoked by uid 500); 14 Jun 2012 17:40:17 -0000 Mailing-List: contact user-help@hbase.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@hbase.apache.org Delivered-To: mailing list user@hbase.apache.org Received: (qmail 50548 invoked by uid 99); 14 Jun 2012 17:40:17 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 14 Jun 2012 17:40:17 +0000 X-ASF-Spam-Status: No, hits=1.5 required=5.0 tests=FSL_RCVD_USER,HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of kevin.macksamie@gmail.com designates 209.85.161.169 as permitted sender) Received: from [209.85.161.169] (HELO mail-gg0-f169.google.com) (209.85.161.169) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 14 Jun 2012 17:40:11 +0000 Received: by ggm4 with SMTP id 4so2040652ggm.14 for ; Thu, 14 Jun 2012 10:39:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=tObOyNd+pmTsQTLw6kJZDRMUqoeP++w1yegNCgKAyq0=; b=y2NKE0ZQOKcbuw4D2QZXb8dcmyKLtcC9e3dxxmsjxguLO/BHgKOf74G/7lpNrnirC5 syL1bdRMoj5kub1rgVvV3ZImB4guqoT3mO7+/7o4CSgvsmughsl1NR5Rtc8QgdJ7Ehh7 ZG2XCLZorPfrPJeLRQhR1Pe+NRCl0J0BR6SyYrM+hvm+6+8qcWOB/he5pETJfxfcSZEq 05yufM2EWtINTmwmY32ykvGNqfallgHPURvOVRO4ULvqPA+LUkTBQg3LAIAvL+b8boJP uPcunBsKj4bPgwviCgGMMS8BQuNgHzAXJWbYJhyXHHvUSyra0rAbQPlME5XYccF8S4kS W3pg== MIME-Version: 1.0 Received: by 10.50.161.198 with SMTP id xu6mr13253692igb.69.1339695590420; Thu, 14 Jun 2012 10:39:50 -0700 (PDT) Received: by 10.50.209.37 with HTTP; Thu, 14 Jun 2012 10:39:50 -0700 (PDT) Date: Thu, 14 Jun 2012 13:39:50 -0400 Message-ID: Subject: Clear Block Cache From: Kevin To: user@hbase.apache.org Content-Type: multipart/alternative; boundary=14dae9341141c632e604c2722ff1 X-Virus-Checked: Checked by ClamAV on apache.org --14dae9341141c632e604c2722ff1 Content-Type: text/plain; charset=ISO-8859-1 Hello, I would like to get timing results for some large, rare scans, but each reading test keeps performing better because of the heap's LRU block cache. Is there a way (possibly through the API) that I can clear the block cache to get timing results that mimic cold read times? I tried HTable.clearRegionCache() but that didn't seem to do anything in terms of making the scans taking longer. Thanks. --14dae9341141c632e604c2722ff1--