From user-return-64825-archive-asf-public=cust-asf.ponee.io@cassandra.apache.org Thu Dec 5 10:17:00 2019 Return-Path: X-Original-To: archive-asf-public@cust-asf.ponee.io Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [207.244.88.153]) by mx-eu-01.ponee.io (Postfix) with SMTP id 3D966180643 for ; Thu, 5 Dec 2019 11:17:00 +0100 (CET) Received: (qmail 7094 invoked by uid 500); 5 Dec 2019 10:16:56 -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 7084 invoked by uid 99); 5 Dec 2019 10:16:56 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd1-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 05 Dec 2019 10:16:56 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd1-us-west.apache.org (ASF Mail Server at spamd1-us-west.apache.org) with ESMTP id 6FD66C0B1E for ; Thu, 5 Dec 2019 10:16:55 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd1-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: 0.25 X-Spam-Level: X-Spam-Status: No, score=0.25 tagged_above=-999 required=6.31 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, HTML_MESSAGE=0.2, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=disabled Authentication-Results: spamd1-us-west.apache.org (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mx1-he-de.apache.org ([10.40.0.8]) by localhost (spamd1-us-west.apache.org [10.40.0.7]) (amavisd-new, port 10024) with ESMTP id GM2bV-OebksJ for ; Thu, 5 Dec 2019 10:16:54 +0000 (UTC) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=2607:f8b0:4864:20::e35; helo=mail-vs1-xe35.google.com; envelope-from=adarsh0007@gmail.com; receiver= Received: from mail-vs1-xe35.google.com (mail-vs1-xe35.google.com [IPv6:2607:f8b0:4864:20::e35]) by mx1-he-de.apache.org (ASF Mail Server at mx1-he-de.apache.org) with ESMTPS id 9B6177DDDB for ; Thu, 5 Dec 2019 10:16:53 +0000 (UTC) Received: by mail-vs1-xe35.google.com with SMTP id f8so1929349vsq.8 for ; Thu, 05 Dec 2019 02:16:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=6l4xBFrkXHSrwJmii5l/dg6S8Nr94l3tfkfpleo0dlw=; b=LF1KkvkgzRw61CthCnX4jr1HGP7yn+XYfSjonX0CbPHeDiz6fvnnROR6s7GO8xc+qP 0Ehyvy61lzm7j7SM1V8j2tPbkchqc9ZwcXkltaPsNasa9eFC3nxaPkAY+xveSskidKeU Ui0r6Z71O6uZ3Vn0NjGA0Nwsi3W0r0uiDg3fH+X3Lbor7mNe7ZmIZHEFwfIZx2AI45vB k18ioxOfkI3Rx+94hq8UcwuxcfD6AZSHKIGMU63D5x8AMEPTx9GI6wCpewUOAN4WMzzQ u0SyPK1ZCcGOOfASTG5z+xI9Mpe+dPUYm1VbQAHPHlYC+vuFXIRCfGkFEDE5og5Kidwx qJ9Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=6l4xBFrkXHSrwJmii5l/dg6S8Nr94l3tfkfpleo0dlw=; b=N/D7/IprCSU6lrwqTYPojQCDzW7E2h1LskKpgVxNDK5Bztz4OvAgC9eLPuxvLuec9j bNuT/5IEKd04VbvfmyB55FQsT7I5N/vnZFJZ7Cqc98Z2yirVx4Ip/XV8AgIICv0QeZkG Ywru9VrDdh9C47INnw48L4KJOpg3zSxJDwV7yoxWc/FIj+WSrblizttVZiAN/ZFb8Ii0 FDmnRki3enHn/JrW0bZuEK2C2lHRc2lB+1Gnzj7LYdb8vmIdBqFZ6eVic4MCCSpf0epC /URRV8pT5LU1YwIzp9BkSnjP2XTQat8pFCCymAzWyrY9AyaNCSxamzZC2DxGKNvL3ys3 kewA== X-Gm-Message-State: APjAAAW+6mfuN8KsB/8uW2gX/EkvKTvLudRyeV5jdTouhvPs38aPVZOE pHscW5F1XzBALAeGq6OZcRRI+SuG6KAxo7xc1XBQfQ== X-Google-Smtp-Source: APXvYqzExYFcuooDY7wZGF16XJ3cLRKu1jOMyghcSKSVBg1Ndty00Bj0LmMAoz8QLOkCX3od8LmcRigPjoq6GWOy+SE= X-Received: by 2002:a67:f3d6:: with SMTP id j22mr5041802vsn.146.1575541005717; Thu, 05 Dec 2019 02:16:45 -0800 (PST) MIME-Version: 1.0 From: Adarsh Kumar Date: Thu, 5 Dec 2019 15:46:09 +0530 Message-ID: Subject: Repair Strategies To: user@cassandra.apache.org Content-Type: multipart/alternative; boundary="000000000000f9955e0598f239c7" --000000000000f9955e0598f239c7 Content-Type: text/plain; charset="UTF-8" Hi, We are in the process of designing a new solution around cassandra. As repairs are very critical tasks for cassandra clusters want some pointers on the following: 1. What are the recommended strategies for repairs for production cluster (>100 nodes) 2. Is there any special consideration(s) do multi DC repairs 3. Steps to recover a DC through repairs 4. How much incremental repairs are useful and community recommendations about it(i see TLP recommendation cassandra-reaper, that say to use inc repair >4.0) Any link, blogs or SOP will be helpful. Thanks in advance. Thanks and regards, Adarsh Kumar --000000000000f9955e0598f239c7 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi,

We are in the process of designing = a new solution around cassandra. As repairs are very critical tasks for cas= sandra clusters want some pointers on the following:
  1. What= are the recommended=C2=A0strategies for repairs for production cluster (&g= t;100 nodes)
  2. Is there any special consideration(s) do multi DC repa= irs
  3. Steps to recover a DC through repairs
  4. How much incremen= tal repairs=C2=A0are useful=C2=A0and community recommendations about it(i s= ee TLP recommendation cassandra-reaper, that say to use inc repair >4.0)=
Any link, blogs or SOP will be=C2=A0helpful. Thanks in advance.

Thanks=C2=A0and=C2=A0regards,
Adarsh = Kumar
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