From user-return-36502-apmail-cassandra-user-archive=cassandra.apache.org@cassandra.apache.org Thu Sep 12 09:14:41 2013 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 EC88510C6C for ; Thu, 12 Sep 2013 09:14:41 +0000 (UTC) Received: (qmail 34512 invoked by uid 500); 12 Sep 2013 09:14:37 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 34357 invoked by uid 500); 12 Sep 2013 09:14:23 -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 34349 invoked by uid 99); 12 Sep 2013 09:14:20 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 12 Sep 2013 09:14:20 +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 (athena.apache.org: domain of chris.wirt@struq.com designates 74.125.83.50 as permitted sender) Received: from [74.125.83.50] (HELO mail-ee0-f50.google.com) (74.125.83.50) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 12 Sep 2013 09:14:13 +0000 Received: by mail-ee0-f50.google.com with SMTP id d51so5125685eek.23 for ; Thu, 12 Sep 2013 02:13:52 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:subject:date:message-id:mime-version :content-type:thread-index:content-language; bh=scum/Hu9tDIRGtfMVS81xzWUvd1bFlSloGPTrK436po=; b=M/N2oiCXG61IX6lZy0GhA3chzaHaANLs7SKXyu0W97Ux8494dF9B/eLMwJCVt5gNXd RcQ11xzlxaGCd9g/tajXrxDZex+asEB8NbPDyR8Xws/H87lCx9EHmF3Iqu/yyM39s+vi Bvwq92gjiE9ncZKQpQS0uCXgceFD7TiW3S5JMO9YMCLq0x0ytozjUg2Fy2ZquoYg+KUr wRGwCsl9CsMyHIQ37W73qfeDVYNZvzi6sPHWE9Nel05jmXT1p8yfmRUy+36haiVZMzy/ Ho/PiROKOmwYMmb+tOegNXulARL0r7otWl/I1urpPZCbRwXOypl7v8A7KCIgvPQXvMW0 PkJA== X-Gm-Message-State: ALoCoQk6JPTmzNGvi1kWzTfuFeN3xnucAd0Dum0v2dk6UPZ2d7l+HEb5K9I/vEo7qL84zWPmQSsr X-Received: by 10.14.108.9 with SMTP id p9mr9563968eeg.8.1378977232438; Thu, 12 Sep 2013 02:13:52 -0700 (PDT) Received: from StevePereiraPC (host81-133-200-21.in-addr.btopenworld.com. [81.133.200.21]) by mx.google.com with ESMTPSA id h52sm4127703eez.3.1969.12.31.16.00.00 (version=TLSv1 cipher=RC4-SHA bits=128/128); Thu, 12 Sep 2013 02:13:52 -0700 (PDT) From: "Christopher Wirt" To: Subject: sstable compression Date: Thu, 12 Sep 2013 10:13:49 +0100 Message-ID: <00b001ceaf98$65f0e920$31d2bb60$@struq.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00B1_01CEAFA0.C7B5ED60" X-Mailer: Microsoft Outlook 14.0 Thread-Index: Ac6vl56t6dLV9ZtISpCkQhmv9EchTw== Content-Language: en-gb X-Virus-Checked: Checked by ClamAV on apache.org This is a multipart message in MIME format. ------=_NextPart_000_00B1_01CEAFA0.C7B5ED60 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I current use Snappy for my SSTable compression on Cassandra 1.2.8. I would like to switch to using LZ4 compression for my SStables. Would simply altering the table definition mean that all newly written tables are LZ4 and can live in harmony with the existing Snappy SStables? Then naturally over time more of my data will become LZ4 compressed? Have I missed something? Thanks, Chris ------=_NextPart_000_00B1_01CEAFA0.C7B5ED60 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I current = use Snappy for my SSTable compression on Cassandra = 1.2.8.

 

I would like to switch to using LZ4 compression for my = SStables. Would simply altering the table definition mean that all newly = written tables are LZ4 and can live in harmony with the existing Snappy = SStables?

 

Then naturally over time more of my data will become = LZ4 compressed?

Have I missed = something?

 

 

Thanks,

Chris

 

 

 

 

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