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 C895BDE3C for ; Thu, 26 Jul 2012 16:22:01 +0000 (UTC) Received: (qmail 9832 invoked by uid 500); 26 Jul 2012 16:21:59 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 9816 invoked by uid 500); 26 Jul 2012 16:21:59 -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 9806 invoked by uid 99); 26 Jul 2012 16:21:59 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 26 Jul 2012 16:21:59 +0000 X-ASF-Spam-Status: No, hits=1.5 required=5.0 tests=FSL_RCVD_USER,HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of tyler@datastax.com designates 209.85.220.172 as permitted sender) Received: from [209.85.220.172] (HELO mail-vc0-f172.google.com) (209.85.220.172) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 26 Jul 2012 16:21:53 +0000 Received: by vcbfo14 with SMTP id fo14so1925120vcb.31 for ; Thu, 26 Jul 2012 09:21:33 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:x-gm-message-state; bh=xeKL3jvEUesWh/vw0TwltihB06bzGv9Xg7mmP56D3a0=; b=bHy1DD5h0AS5vOrD4873b/0rNWNAKtr2+Jrnhg8cLhra3eRc50joClYgAzrRZpqaeh gUqakxVZk9C82eEhsh3GM8RoTooUHC1N71NqEyNcd0NKWXEY7Y2Mmsxwv+Hup14Tin34 mfvfu6bFNJrQo1bTbf7WEDagAcBOvRI1ZJ4Q/orqoeUEeekY2H9NQtUnhaN2SNx3vam1 e2UI2cmyAw7QBXQbnWOe0s1Ve5GTUqEcnful4tH+bQUZuh9xILCeqU/5yQtpNdd9QExL hA3PqzObIHss1j/cv3RL64cMoSrJez+N07Syn0rTV/krbSLtpzeYWWdGefsn4FdSE/7G yRYg== MIME-Version: 1.0 Received: by 10.52.26.240 with SMTP id o16mr8392320vdg.20.1343319692940; Thu, 26 Jul 2012 09:21:32 -0700 (PDT) Received: by 10.58.163.98 with HTTP; Thu, 26 Jul 2012 09:21:32 -0700 (PDT) In-Reply-To: <320361343283902@web21h.yandex.ru> References: <580941342512842@web13h.yandex.ru> <2302731343030866@web4d.yandex.ru> <2101731343117047@web5e.yandex.ru> <320361343283902@web21h.yandex.ru> Date: Thu, 26 Jul 2012 11:21:32 -0500 Message-ID: Subject: Re: Cassandra 1.0 hangs during GC From: Tyler Hobbs To: user@cassandra.apache.org Content-Type: multipart/alternative; boundary=20cf3079b8ae1e174204c5bdfdc7 X-Gm-Message-State: ALoCoQmR7EIZDtkzFRaV4MY1dyR0XYeZ6a7zxYkn5udQ1Y5Fgh51E3Fe9VqPXMdPt+P27hO3wREY --20cf3079b8ae1e174204c5bdfdc7 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On Thu, Jul 26, 2012 at 1:25 AM, Nikolay K=D0=BEvshov = wrote: > > And I have remembered that I do a lot of get_range_slices requests, each > time on a range of 100, if this could be important. If you have large rows, try lowering the number of rows you fetch at once from 100 to 25. Pulling in a large amount of short-lived data could explain the long parnews. --=20 Tyler Hobbs DataStax --20cf3079b8ae1e174204c5bdfdc7 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
On Thu, Jul 26, 2012 at 1:25 AM, Nikolay K=D0=BE= vshov <nkovshov@yandex.ru> wrote:

And I have remembered that I do a lot of get_range_slices requests, each ti= me on a range of 100, if this could be important.

If = you have large rows, try lowering the number of rows you fetch at once from= 100 to 25.=C2=A0 Pulling in a large amount of short-lived data could expla= in the long parnews.

--
Tyler Hobbs
DataStax
<= br> --20cf3079b8ae1e174204c5bdfdc7--