Return-Path: X-Original-To: apmail-accumulo-user-archive@www.apache.org Delivered-To: apmail-accumulo-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 F262DDF0A for ; Wed, 12 Sep 2012 21:20:58 +0000 (UTC) Received: (qmail 18804 invoked by uid 500); 12 Sep 2012 21:20:58 -0000 Delivered-To: apmail-accumulo-user-archive@accumulo.apache.org Received: (qmail 18720 invoked by uid 500); 12 Sep 2012 21:20:58 -0000 Mailing-List: contact user-help@accumulo.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@accumulo.apache.org Delivered-To: mailing list user@accumulo.apache.org Received: (qmail 18712 invoked by uid 99); 12 Sep 2012 21:20:58 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 12 Sep 2012 21:20:58 +0000 X-ASF-Spam-Status: No, hits=-0.7 required=5.0 tests=FSL_RCVD_USER,RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of david.medinets@gmail.com designates 209.85.214.41 as permitted sender) Received: from [209.85.214.41] (HELO mail-bk0-f41.google.com) (209.85.214.41) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 12 Sep 2012 21:20:51 +0000 Received: by bkcjc3 with SMTP id jc3so139542bkc.0 for ; Wed, 12 Sep 2012 14:20:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=pQ7LnfKdAgZZ2A0oVzmp6x82vDeOd9Xc2b6bH+hj0vU=; b=UjZB+886sz+RRW6ZItYd+vZEuu7VBJVQRCA+V6t204V+Kxd39xHoRWz89MdLE7tSwp 64AeULUmdR9D8FXzUWvo+Q3HghqKF/v+kgxk6CXVOVYduwe46LTk1XNdt5qhKjS1DcyN PUsRFfSRVB87AKasFu8s6/4ObXdhPQ4DpGvQqGeZGiWfEfyyVNfXzz86sfd16SxI1IpO UH35mNkdqMiRQnMl59+y1eLsdf45QtroKoEQ/Z417NPk3cDvMHv/JWluPAA3TLcgfKmW lsWlMmtH1XZC6ihDv9ISgnYm6a1kGzB9lQ1hk4/XAx1lAoWGVPBLHx9WGYgqHqtqScgA +DXg== MIME-Version: 1.0 Received: by 10.204.4.154 with SMTP id 26mr6596966bkr.91.1347484830951; Wed, 12 Sep 2012 14:20:30 -0700 (PDT) Received: by 10.205.40.7 with HTTP; Wed, 12 Sep 2012 14:20:30 -0700 (PDT) In-Reply-To: References: <7B6B9A998E54184F9E0CEED43DD504090391DDD7@0905-its-exmp01.us.saic.com> <7B6B9A998E54184F9E0CEED43DD504090391E2C2@0905-its-exmp01.us.saic.com> Date: Wed, 12 Sep 2012 17:20:30 -0400 Message-ID: Subject: Re: Running Accumulo straight from Memory From: David Medinets To: user@accumulo.apache.org Content-Type: text/plain; charset=ISO-8859-1 Why would locality groups be useful in an in-memory system? On Wed, Sep 12, 2012 at 4:53 PM, Adam Fuchs wrote: > Even if you are just using memory, minor and major compactions are important > to get compression, handle deletes, get sequential access (cache line > efficiency), use iterators, and introduce locality groups.