From user-return-28545-apmail-cassandra-user-archive=cassandra.apache.org@cassandra.apache.org Tue Sep 4 07:42:13 2012 Return-Path: X-Original-To: apmail-cassandra-user-archive@www.apache.org Delivered-To: apmail-cassandra-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 CCEB3DB30 for ; Tue, 4 Sep 2012 07:42:13 +0000 (UTC) Received: (qmail 29598 invoked by uid 500); 4 Sep 2012 07:42:11 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 29113 invoked by uid 500); 4 Sep 2012 07:42:08 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 29066 invoked by uid 99); 4 Sep 2012 07:42:06 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 04 Sep 2012 07:42:06 +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 sylvain@datastax.com designates 209.85.160.44 as permitted sender) Received: from [209.85.160.44] (HELO mail-pb0-f44.google.com) (209.85.160.44) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 04 Sep 2012 07:41:58 +0000 Received: by pbbrr4 with SMTP id rr4so8706585pbb.31 for ; Tue, 04 Sep 2012 00:41:37 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:x-gm-message-state; bh=IdDvF/hLLuTI6MCxYbI6PM6DlQYdIGaruEI1LplBWU4=; b=Rd+icbTt591O+uerlZB0+mPChSYzOx9V/rjlKqGypF2inFT3p7VV1yXpzj1qc1Idqq h3hYPv5wCjoACDNSenqB8IVLnHGswWqCBGU+3FV39PKnsRzDzh14x9QTT/na/P8/YRPy 1IXZ4EhTWTT1delrnRC945e11mKV26NO/kGGMDXxFXvrBLafK05IgtWc+VPIvMGRKq+k RdonbVQOm1VPX/3U8wT5vxKRoAyhrECwwBwYTpMdGgdNb1sI/mdi6FiPO/moAEcA1NZK BXbl7EE/WNO3reoBgQIpOl0du8XiYI/QoObz3JQxZK2xEEwvw47GRVzLemvbxxR+gMdK 1iHQ== MIME-Version: 1.0 Received: by 10.68.212.70 with SMTP id ni6mr43739377pbc.22.1346744497175; Tue, 04 Sep 2012 00:41:37 -0700 (PDT) Received: by 10.68.228.202 with HTTP; Tue, 4 Sep 2012 00:41:37 -0700 (PDT) In-Reply-To: References: Date: Tue, 4 Sep 2012 09:41:37 +0200 Message-ID: Subject: Re: Cassandra 1.0 - is disk seek required to access SSTable metadata From: Sylvain Lebresne To: user@cassandra.apache.org, mac.miklas@gmail.com Content-Type: text/plain; charset=ISO-8859-1 X-Gm-Message-State: ALoCoQmYxpfa7OIvnsZsYccWTJnpD7k3RiHLhdLZVL/9NZJHhXMkjkRsfllXkc04Y2SfZiN46i9D > Bloom filter is stored in RAM, but what about metadata? > Is disk seek required to access it? No, it's loaded in RAM when the sstable is loaded. -- Sylvain