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 4E07990A8 for ; Thu, 16 May 2013 18:50:37 +0000 (UTC) Received: (qmail 77094 invoked by uid 500); 16 May 2013 18:50:35 -0000 Delivered-To: apmail-hbase-user-archive@hbase.apache.org Received: (qmail 77048 invoked by uid 500); 16 May 2013 18:50:35 -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 77039 invoked by uid 99); 16 May 2013 18:50:35 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 16 May 2013 18:50:35 +0000 X-ASF-Spam-Status: No, hits=1.5 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of viral.bajaria@gmail.com designates 209.85.210.181 as permitted sender) Received: from [209.85.210.181] (HELO mail-ia0-f181.google.com) (209.85.210.181) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 16 May 2013 18:50:28 +0000 Received: by mail-ia0-f181.google.com with SMTP id y25so3737074iay.26 for ; Thu, 16 May 2013 11:50:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:content-type; bh=aHPoZTTY7e23EcZ/zHB5Sf04ph4TulMkqwlJfVoZQjQ=; b=I9caLQsNAIxPWYaejr/JXjF9IbPUim5roooYj+vhxyzuChwuHpsLdNKtHDwIYKUWLQ yrSF8vTnOEEoTa3EvJpSLrFp7vA3txuL5e/ADd5aggr6UgXnEWQVtiFWMvX7r/AlWpyU FKOfZEdbUc5/4VKjm4SNA4xBhFtKUonA6QcMgWLcAM5merLGwVGmZZidNxUaqo+Q2CqH zRPTOoe+zXMogaHb+vzRDh/vBqXjVnTDjw1MHtTa83nNfpVYeD+CFuOE3R9h5/QaR4fT vu28hQuRj1o168SBJqDAEosE3P9JHte7nvIgq33RmSC0L+P2Gl8pNLlKX7LzvmT9DK4k gYuw== MIME-Version: 1.0 X-Received: by 10.50.1.102 with SMTP id 6mr10651131igl.64.1368730208031; Thu, 16 May 2013 11:50:08 -0700 (PDT) Received: by 10.64.20.166 with HTTP; Thu, 16 May 2013 11:50:07 -0700 (PDT) In-Reply-To: References: Date: Thu, 16 May 2013 11:50:07 -0700 Message-ID: Subject: Re: GET performance degrades over time From: Viral Bajaria To: "user@hbase.apache.org" Content-Type: multipart/alternative; boundary=047d7bd770a4d7ddea04dcda5527 X-Virus-Checked: Checked by ClamAV on apache.org --047d7bd770a4d7ddea04dcda5527 Content-Type: text/plain; charset=ISO-8859-1 > This generally happens when the same block is accessed for the HFile. Are > you seeing any contention on the HDFS side? > When you say contention what should I be looking for ? slow operations to respond to data block requests ? or some specific metric in ganglia ? -Viral --047d7bd770a4d7ddea04dcda5527--