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 E0B1E9C6D for ; Wed, 2 Nov 2011 04:16:37 +0000 (UTC) Received: (qmail 22942 invoked by uid 500); 2 Nov 2011 04:16:35 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 22780 invoked by uid 500); 2 Nov 2011 04:16:34 -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 22765 invoked by uid 99); 2 Nov 2011 04:16:33 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 02 Nov 2011 04:16:32 +0000 X-ASF-Spam-Status: No, hits=-0.6 required=5.0 tests=FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of ramesh25@gmail.com designates 209.85.210.172 as permitted sender) Received: from [209.85.210.172] (HELO mail-iy0-f172.google.com) (209.85.210.172) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 02 Nov 2011 04:16:26 +0000 Received: by iaeo4 with SMTP id o4so1666224iae.31 for ; Tue, 01 Nov 2011 21:16:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; bh=R6XWHMAliVXXYf5V5ZN5yOVzX4kAZZvNHfLz4w9SEG4=; b=tO7k457wWmB6xXtPoLPloxsyAD9fiUaNek81AVmNCs/CrawB0l4HxPQG9X8Z8lA9pO xkLR9A/Kr2Uf/8n60zXlRTfnz+Zi0CrOgLw4wztwn8Wp6KcTHXm3fwyqnyIhG/3ykMG7 5d0sb1d0ZSsLrYww8CQ0mrRifeYP8Wu0XWtCI= MIME-Version: 1.0 Received: by 10.231.28.209 with SMTP id n17mr404753ibc.89.1320207364301; Tue, 01 Nov 2011 21:16:04 -0700 (PDT) Received: by 10.231.206.15 with HTTP; Tue, 1 Nov 2011 21:16:04 -0700 (PDT) In-Reply-To: References: Date: Tue, 1 Nov 2011 23:16:04 -0500 Message-ID: Subject: Re: Second Cassandra users survey From: Ramesh Natarajan To: user@cassandra.apache.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Virus-Checked: Checked by ClamAV on apache.org Here is my wish list - I would love Cassandra to - provide a efficient method to retrieve the count of columns for a given row without resorting to read all columns and calculate the count for a given row key. - support auto increment column names - Column slice based query doesn't take advantage of the Column Bloom Filter and it is not always easy to enumerate the column names in a deterministic manner. - provide JNA support for Key cache - remove dependency on running node tool repair when any column is deleted ( so tombstones doesn't get resurrected ) thanks Ramesh On Tue, Nov 1, 2011 at 5:59 PM, Jonathan Ellis wrote: > Hi all, > > Two years ago I asked for Cassandra use cases and feature requests. > [1] =A0The results [2] have been extremely useful in setting and > prioritizing goals for Cassandra development. =A0But with the release of > 1.0 we've accomplished basically everything from our original wish > list. [3] > > I'd love to hear from modern Cassandra users again, especially if > you're usually a quiet lurker. =A0What does Cassandra do well? =A0What ar= e > your pain points? =A0What's your feature wish list? > > As before, if you're in stealth mode or don't want to say anything in > public, feel free to reply to me privately and I will keep it off the > record. > > [1] http://www.mail-archive.com/cassandra-dev@incubator.apache.org/msg011= 48.html > [2] http://www.mail-archive.com/cassandra-user@incubator.apache.org/msg01= 446.html > [3] http://www.mail-archive.com/dev@cassandra.apache.org/msg01524.html > > -- > Jonathan Ellis > Project Chair, Apache Cassandra > co-founder of DataStax, the source for professional Cassandra support > http://www.datastax.com >