Return-Path: 
 <user-return-20850-apmail-cassandra-user-archive=cassandra.apache.org@cassandra.apache.org>
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 65BA57547
	for <apmail-cassandra-user-archive@www.apache.org>;
 Sun, 18 Sep 2011 21:56:26 +0000 (UTC)
Received: (qmail 8070 invoked by uid 500); 18 Sep 2011 21:56:24 -0000
Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org
Received: (qmail 8035 invoked by uid 500); 18 Sep 2011 21:56:24 -0000
Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm
Precedence: bulk
List-Help: <mailto:user-help@cassandra.apache.org>
List-Unsubscribe: <mailto:user-unsubscribe@cassandra.apache.org>
List-Post: <mailto:user@cassandra.apache.org>
List-Id: <user.cassandra.apache.org>
Reply-To: user@cassandra.apache.org
Delivered-To: mailing list user@cassandra.apache.org
Received: (qmail 8027 invoked by uid 99); 18 Sep 2011 21:56:24 -0000
Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230)
    by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 18 Sep 2011 21:56:24 +0000
X-ASF-Spam-Status: No, hits=1.5 required=5.0
	tests=FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL
X-Spam-Check-By: apache.org
Received-SPF: pass (nike.apache.org: domain of jakers@gmail.com designates
 209.85.210.48 as permitted sender)
Received: from [209.85.210.48] (HELO mail-pz0-f48.google.com) (209.85.210.48)
    by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 18 Sep 2011 21:56:18 +0000
Received: by pzk6 with SMTP id 6so8660359pzk.7
        for <user@cassandra.apache.org>; Sun, 18 Sep 2011 14:55:56 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:from:date:message-id:subject:to
         :content-type;
        bh=fbp0/Bhs7rMhRp8brVVvfPZFFVzW2Z4Yfw3gTirZjUI=;
        b=Se7dPA2BmvY1x2JN76mby6CYXoy1i3mFRO5XPKo9jb8H9KVrhIeFzovIGQ6i68v8ev
         rn1PhaBRi7iMq2S6EAR4H69iRSMXyGbFhT5qxr7NR6lKgfTEAsWkzM61m9fxncOI4nrO
         qs66W+tm03Y4GrNa2KsY9Rf/b5Y6W1fODkQKo=
Received: by 10.68.35.4 with SMTP id d4mr1764365pbj.499.1316382955092; Sun, 18
 Sep 2011 14:55:55 -0700 (PDT)
MIME-Version: 1.0
Received: by 10.142.49.3 with HTTP; Sun, 18 Sep 2011 14:55:35 -0700 (PDT)
In-Reply-To: 
 <CAFFf+k-7GEd10qx0=hGeK5M4nwoJvFpB4KnnVEimJnn6BCt1SQ@mail.gmail.com>
References: 
 <CAFFf+k-7GEd10qx0=hGeK5M4nwoJvFpB4KnnVEimJnn6BCt1SQ@mail.gmail.com>
From: Jake Luciani <jakers@gmail.com>
Date: Sun, 18 Sep 2011 16:55:35 -0500
Message-ID: 
 <CALamAD+ozaU7=NcMYuEChjQULOYLzvbqMrp7e7ywpvQgVN67MA@mail.gmail.com>
Subject: Re: Possibility of going OOM using get_count
To: user@cassandra.apache.org
Content-Type: multipart/alternative; boundary=bcaec520e5296d3a6404ad3e4a6c
X-Virus-Checked: Checked by ClamAV on apache.org

--bcaec520e5296d3a6404ad3e4a6c
Content-Type: text/plain; charset=ISO-8859-1

This is fixed in 1.0
https://issues.apache.org/jira/browse/CASSANDRA-2894


On Sun, Sep 18, 2011 at 2:16 PM, Tharindu Mathew <mccloud35@gmail.com>wrote:

> Hi everyone,
>
> I noticed this line in the API docs,
>
> The method is not O(1). It takes all the columns from disk to calculate the
> answer. The only benefit of the method is that you do not need to pull all
> the columns over Thrift interface to count them.
> Does this mean if a row has a large number of columns calling this method
> might make it go OOM?
>
> Thanks in advance.
>
> --
> Regards,
>
> Tharindu
>
> blog: http://mackiemathew.com/
>
>


-- 
http://twitter.com/tjake

--bcaec520e5296d3a6404ad3e4a6c
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

This is fixed in 1.0<div><a href=3D"https://issues.apache.org/jira/browse/C=
ASSANDRA-2894">https://issues.apache.org/jira/browse/CASSANDRA-2894</a></di=
v><div><br><br><div class=3D"gmail_quote">On Sun, Sep 18, 2011 at 2:16 PM, =
Tharindu Mathew <span dir=3D"ltr">&lt;<a href=3D"mailto:mccloud35@gmail.com=
">mccloud35@gmail.com</a>&gt;</span> wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex;">Hi everyone,<div><br></div><div>I noticed t=
his line in the API docs,</div><div><span style=3D"font-family:sans-serif;f=
ont-size:16px;background-color:rgb(255, 255, 255)"><p>

The method is not O(1). It takes all the columns from disk to calculate the=
 answer. The only benefit of the method is that you do not need to pull all=
 the columns over Thrift interface to count them.</p>
</span><div>Does this mean if a row has a large number of columns calling t=
his method might make it go OOM?</div><div><br></div><div>Thanks in advance=
.</div><div><br></div><font color=3D"#888888">-- <br>Regards,<br><br>Tharin=
du<div>

<br></div><div>
blog:=A0<a href=3D"http://mackiemathew.com/" target=3D"_blank">http://macki=
emathew.com/</a></div><br>
</font></div>
</blockquote></div><br><br clear=3D"all"><div><br></div>-- <br><a href=3D"h=
ttp://twitter.com/tjake" target=3D"_blank">http://twitter.com/tjake</a><br>
</div>

--bcaec520e5296d3a6404ad3e4a6c--