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 C467EBCA8 for ; Sat, 31 Dec 2011 13:43:31 +0000 (UTC) Received: (qmail 72226 invoked by uid 500); 31 Dec 2011 13:43:29 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 72134 invoked by uid 500); 31 Dec 2011 13:43:28 -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 72125 invoked by uid 99); 31 Dec 2011 13:43:28 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 31 Dec 2011 13:43:28 +0000 X-ASF-Spam-Status: No, hits=3.6 required=5.0 tests=FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FORGED_REPLYTO,FREEMAIL_REPLYTO_END_DIGIT,RCVD_IN_DNSWL_NONE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: local policy) Received: from [98.139.213.151] (HELO nm7-vm0.bullet.mail.bf1.yahoo.com) (98.139.213.151) by apache.org (qpsmtpd/0.29) with SMTP; Sat, 31 Dec 2011 13:43:18 +0000 Received: from [98.139.212.146] by nm7.bullet.mail.bf1.yahoo.com with NNFMP; 31 Dec 2011 13:42:57 -0000 Received: from [98.139.212.196] by tm3.bullet.mail.bf1.yahoo.com with NNFMP; 31 Dec 2011 13:42:57 -0000 Received: from [127.0.0.1] by omp1005.mail.bf1.yahoo.com with NNFMP; 31 Dec 2011 13:42:57 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 824139.8980.bm@omp1005.mail.bf1.yahoo.com Received: (qmail 35996 invoked by uid 60001); 31 Dec 2011 13:42:57 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1325338977; bh=3aCCjIO3tB6KRGB1iInbjo5BupndnDu247DI8aze6Vs=; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=tIoUjtQRMN+B9kCRYPQmKNwCNycXD2vFQUPltnLLWMJPzgTM+dfsRZiMMbDRQJN0Jiqppyv8AGzzizOwpUpK5vCdLTBDGByWUJsF7tt5UkilYHff1fgKLeH9O1qe+ttzPYBTjGzmQod0ieFjrggVopr7O0Zv5pMYFMz+NSc2a70= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=iBaxeZhG5oEHAq1DTD61JMqbjDbSACRO3xiCkMtLMksofUgZcj8EcIq5D5XlhdpXQ5rrxYVgLGcvzJsSUEyUdUMS+K8feR1TUbedLEDTqxfsUusqssiHwfECjHEvrF0SkTmCReOhFkAODjLSZG9DPgDsbm5SNuZDdQ7FJgdAP7g=; X-YMail-OSG: .ikD8y8VM1loGrdUtgpRcRLmppOSAprPFm.1om3SrtypO2Q ay5rqCs2M9taeLKLroZaNSQ1ChGD9dgg04MyRf8a0Azx3XrfXoMYiMVjuY3j 3tB1NLfabVzK8a_r1HaRQpaABHMUVPaMZOnO3AqGpanzCBCgIch8mPCemru. 4mZqhnU5.A5ETQYvEWa5NeJW9nwwZBp33O9Uj361v6PtHmlS7oklRGFPJrWz iFAjk4dhux71mVBjK9j2v7dlCMTR75jBIG4q0xCeO80EWpmADFd5HCy2AVRH 5YJkC9a6YOOqr4YotT6PTed0DjRYCoTsNjAByUF7MnKNYAwWbQU4oPQBklQL zC5APilarL9Ndfhl0.aXyqCCz6FAXiEdLsMoHWVTzUUiAv.tNCo5dVFYZQG2 lQPI0VpMXymfpiDXWqLncX8jqSKjh7ne8PWDxFR0ZBr8Ej_6DDVQlJiC7U7g 1FKrZgfpn Received: from [182.93.34.54] by web161202.mail.bf1.yahoo.com via HTTP; Sat, 31 Dec 2011 05:42:57 PST X-Mailer: YahooMailWebService/0.8.115.331698 References: <1325326134.49483.YahooMailNeo@web161202.mail.bf1.yahoo.com> Message-ID: <1325338977.1661.YahooMailNeo@web161202.mail.bf1.yahoo.com> Date: Sat, 31 Dec 2011 05:42:57 -0800 (PST) From: Kent Tong Reply-To: Kent Tong Subject: Re: random keys and overlapping key ranges in SSTables To: "user@cassandra.apache.org" In-Reply-To: <1325326134.49483.YahooMailNeo@web161202.mail.bf1.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable > bloom filters can guess right sstables to be read with high=A0=0A> probab= ility < 0.1%. In reality even if you are using size based=A0=0A> compaction= and have about 300 sstables, reading is fast unless=0A> there is row fragm= entation and you are reading entire row.=0A=0ARight, that's it. Thanks!=0A