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 BC4329FF6 for ; Wed, 18 Apr 2012 12:07:27 +0000 (UTC) Received: (qmail 18404 invoked by uid 500); 18 Apr 2012 12:07:25 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 18378 invoked by uid 500); 18 Apr 2012 12:07:25 -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 18370 invoked by uid 99); 18 Apr 2012 12:07:25 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 18 Apr 2012 12:07:25 +0000 X-ASF-Spam-Status: No, hits=-0.0 required=5.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: local policy) Received: from [81.7.166.231] (HELO mail.adform.com) (81.7.166.231) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 18 Apr 2012 12:07:18 +0000 Received: from dkexc001.adform.com ([10.0.8.3]) by mail.adform.com with XWall v3.47 ; Wed, 18 Apr 2012 15:06:54 +0300 Received: from DKEXC002.adform.com (10.0.19.5) by DKEXC001.adform.com (10.0.8.3) with Microsoft SMTP Server (TLS) id 14.1.355.2; Wed, 18 Apr 2012 15:06:53 +0300 Received: from DKEXC001.adform.com ([fe80::6d0c:ccd8:b690:688a]) by DKEXC002.adform.com ([fe80::a869:727c:285c:fd3%16]) with mapi id 14.02.0283.003; Wed, 18 Apr 2012 15:06:52 +0300 From: Viktor Jevdokimov To: "user@cassandra.apache.org" Subject: RE: size tiered compaction - improvement Thread-Topic: size tiered compaction - improvement Thread-Index: AQHNEdOB6jSkU5/2dUeM3Q60/S5lGpaJZMqAgAA0+wCAAExcAIAAAYGAgA/zPoCAAAubgIAF4IwAgAB2WACAAFYV0A== Date: Wed, 18 Apr 2012 12:06:51 +0000 Message-ID: <2C85E14562B39345BCCAD90B8E7955C90D2519@DKEXC001.adform.com> References: <4F7B5524.2090206@filez.com> <4F7B9252.9020001@filez.com> <4F7BD3A3.2040906@4friends.od.ua> <4F8934E9.3030800@filez.com> <4F893EA5.7090407@4friends.od.ua> <4F8E9006.101@filez.com> In-Reply-To: <4F8E9006.101@filez.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [192.168.0.95] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-XWALL-BCKS: auto Our use case requires Column TTL, not CF TTL, because it is variable, not c= onstant. Best regards/ Pagarbiai Viktor Jevdokimov Senior Developer Email: Viktor.Jevdokimov@adform.com Phone: +370 5 212 3063 Fax: +370 5 261 0453 J. Jasinskio 16C, LT-01112 Vilnius, Lithuania Disclaimer: The information contained in this message and attachments is in= tended solely for the attention and use of the named addressee and may be c= onfidential. If you are not the intended recipient, you are reminded that t= he information remains the property of the sender. You must not use, disclo= se, distribute, copy, print or rely on this e-mail. If you have received th= is message in error, please contact the sender immediately and irrevocably = delete this message and any copies.-----Original Message----- From: Radim Kolar [mailto:hsn@filez.com] Sent: Wednesday, April 18, 2012 12:57 To: user@cassandra.apache.org Subject: Re: size tiered compaction - improvement > Any compaction pass over A will first convert the TTL data into tombstone= s. > > Then, any subsequent pass that includes A *and all other sstables > containing rows with the same key* will drop the tombstones. thats why i proposed to attach TTL to entire CF. Tombstones would not be ne= eded