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 B8B1110CDC for ; Mon, 24 Feb 2014 01:43:17 +0000 (UTC) Received: (qmail 24609 invoked by uid 500); 24 Feb 2014 01:43:15 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 24540 invoked by uid 500); 24 Feb 2014 01:43:14 -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 24532 invoked by uid 99); 24 Feb 2014 01:43:14 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 24 Feb 2014 01:43:14 +0000 X-ASF-Spam-Status: No, hits=2.2 required=5.0 tests=HTML_MESSAGE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of aplotnik@rhonda.ru designates 81.2.40.155 as permitted sender) Received: from [81.2.40.155] (HELO smtp1.rhonda.ru) (81.2.40.155) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 24 Feb 2014 01:43:08 +0000 Received: from mail.rhonda.ru ([95.154.105.3]) by smtp1.rhonda.ru with esmtp (Exim 4.69) (envelope-from ) id 1WHkZD-00064O-0V for user@cassandra.apache.org; Mon, 24 Feb 2014 12:42:47 +1100 Received: from zeus.rhonda.vtc.ru ([172.16.0.55]) by zeus.rhonda.vtc.ru ([172.16.0.55]) with mapi; Mon, 24 Feb 2014 12:42:46 +1100 From: "Plotnik, Alexey" To: "Plotnik, Alexey" , "user@cassandra.apache.org" Date: Mon, 24 Feb 2014 12:42:44 +1100 Subject: RE: Multi-threaded sub-range repair Thread-Topic: Multi-threaded sub-range repair Thread-Index: Ac8xAZr7FUAXim/VQOeq8mKh/fY25QAAAeCg Message-ID: <4CC51C89A629E542AF8707D11C0B9FB92A25C5953B@zeus.rhonda.vtc.ru> Accept-Language: ru-RU, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: ru-RU, en-US Content-Type: multipart/alternative; boundary="_000_4CC51C89A629E542AF8707D11C0B9FB92A25C5953Bzeusrhondavtc_" MIME-Version: 1.0 X-Virus-Checked: Checked by ClamAV on apache.org --_000_4CC51C89A629E542AF8707D11C0B9FB92A25C5953Bzeusrhondavtc_ Content-Type: text/plain; charset="koi8-r" Content-Transfer-Encoding: quoted-printable UPD: Here we can see that repair process can be executed in parallel: http:= //www.datastax.com/dev/blog/advanced-repair-techniques From: Plotnik, Alexey Sent: 24 =C6=C5=D7=D2=C1=CC=D1 2014 =C7. 12:42 To: user@cassandra.apache.org Subject: Multi-threaded sub-range repair 1. How many parallel threads is safe to have for sub-range repair pro= cess running for a single node? 2. Is Repair process affected `concurrent_compactors` parameter? Shou= ld the `concurrent_compactors` meet the multithreaded repair process needs? --_000_4CC51C89A629E542AF8707D11C0B9FB92A25C5953Bzeusrhondavtc_ Content-Type: text/html; charset="koi8-r" Content-Transfer-Encoding: quoted-printable

UPD: Here we can see that repair process can be executed in p= arallel: http://www.datastax.com/dev/blog/advanced-repair-techniques<= /o:p>

&nb= sp;

From: Plotnik, A= lexey
Sent: 24 =C6=C5=D7=D2=C1=CC=D1 2014 =C7. 12:42
To: user@cassandra.apache.org
Subject: Multi-threaded sub-range re= pair

1. How many parallel threads is safe to have for sub-ran= ge repair process running for a single node?

2. Is Repair process affected `concurrent_compactors` parameter? Should the `= concurrent_compactors` meet the multithreaded repair process needs?

= --_000_4CC51C89A629E542AF8707D11C0B9FB92A25C5953Bzeusrhondavtc_--