Return-Path: Delivered-To: apmail-incubator-cassandra-commits-archive@minotaur.apache.org Received: (qmail 42313 invoked from network); 5 Dec 2009 01:33:43 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 5 Dec 2009 01:33:43 -0000 Received: (qmail 33082 invoked by uid 500); 5 Dec 2009 01:33:43 -0000 Delivered-To: apmail-incubator-cassandra-commits-archive@incubator.apache.org Received: (qmail 33056 invoked by uid 500); 5 Dec 2009 01:33:43 -0000 Mailing-List: contact cassandra-commits-help@incubator.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: cassandra-dev@incubator.apache.org Delivered-To: mailing list cassandra-commits@incubator.apache.org Received: (qmail 32985 invoked by uid 99); 5 Dec 2009 01:33:42 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 05 Dec 2009 01:33:42 +0000 X-ASF-Spam-Status: No, hits=-10.5 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_HI X-Spam-Check-By: apache.org Received: from [140.211.11.140] (HELO brutus.apache.org) (140.211.11.140) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 05 Dec 2009 01:33:40 +0000 Received: from brutus (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id CBC0C29A0012 for ; Fri, 4 Dec 2009 17:33:20 -0800 (PST) Message-ID: <1488902670.1259976800833.JavaMail.jira@brutus> Date: Sat, 5 Dec 2009 01:33:20 +0000 (UTC) From: "Stu Hood (JIRA)" To: cassandra-commits@incubator.apache.org Subject: [jira] Updated: (CASSANDRA-193) Proactive repair In-Reply-To: <761101744.1242935325628.JavaMail.jira@brutus> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/CASSANDRA-193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Stu Hood updated CASSANDRA-193: ------------------------------- Attachment: 193-5-manual-repair.diff 193-4-aes.diff Rebased: back down to only 5 patches. Thanks! > Proactive repair > ---------------- > > Key: CASSANDRA-193 > URL: https://issues.apache.org/jira/browse/CASSANDRA-193 > Project: Cassandra > Issue Type: New Feature > Components: Core > Reporter: Jonathan Ellis > Assignee: Stu Hood > Fix For: 0.5 > > Attachments: 193-1-tree-preparation.diff, 193-1-tree-preparation.diff, 193-1-tree-preparation.diff, 193-1-tree-preparation.diff, 193-2-tree.diff, 193-2-tree.diff, 193-2-tree.diff, 193-2-tree.diff, 193-3-aes-preparation.diff, 193-3-aes-preparation.diff, 193-3-aes-preparation.diff, 193-3-aes-preparation.diff, 193-4-aes.diff, 193-4-aes.diff, 193-4-aes.diff, 193-4-aes.diff, 193-5-manual-repair.diff, 193-5-manual-repair.diff, 193-5-manual-repair.diff, 193-6-inverted-filter.diff, 193-6-inverted-filter.diff, 193-6-repair-explanation-and-node-rename.diff, 193-7-disable-caching-and-fix-minimum-token.diff, 193-breakdown.txt, 193-breakdown.txt, mktree-and-binary-tree.png > > > Currently cassandra supports "read repair," i.e., lazy repair when a read is done. This is better than nothing but is not sufficient for some cases (e.g. catastrophic node failure where you need to rebuild all of a node's data on a new machine). > Dynamo uses merkle trees here. This is harder for Cassandra given the CF data model but I suppose we could just hash the serialized CF value. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.