From user-return-325-archive-asf-public=cust-asf.ponee.io@arrow.apache.org Mon Feb 17 14:07:08 2020 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 98FAD180674 for ; Mon, 17 Feb 2020 15:07:08 +0100 (CET) Received: (qmail 36225 invoked by uid 500); 17 Feb 2020 14:07:07 -0000 Mailing-List: contact user-help@arrow.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@arrow.apache.org Delivered-To: mailing list user@arrow.apache.org Received: (qmail 36205 invoked by uid 99); 17 Feb 2020 14:07:07 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd4-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 17 Feb 2020 14:07:07 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd4-us-west.apache.org (ASF Mail Server at spamd4-us-west.apache.org) with ESMTP id 5DD02C1E80 for ; Mon, 17 Feb 2020 14:07:07 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd4-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -0.199 X-Spam-Level: X-Spam-Status: No, score=-0.199 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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=disabled Authentication-Results: spamd4-us-west.apache.org (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mx1-ec2-va.apache.org ([10.40.0.8]) by localhost (spamd4-us-west.apache.org [10.40.0.11]) (amavisd-new, port 10024) with ESMTP id u-A6fbHDDhn7 for ; Mon, 17 Feb 2020 14:07:06 +0000 (UTC) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=209.85.166.176; helo=mail-il1-f176.google.com; envelope-from=wesmckinn@gmail.com; receiver= Received: from mail-il1-f176.google.com (mail-il1-f176.google.com [209.85.166.176]) by mx1-ec2-va.apache.org (ASF Mail Server at mx1-ec2-va.apache.org) with ESMTPS id E7431BB801 for ; Mon, 17 Feb 2020 14:07:05 +0000 (UTC) Received: by mail-il1-f176.google.com with SMTP id v13so14351121iln.4 for ; Mon, 17 Feb 2020 06:07:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=pm8Lj7iMQpiKgurPQiEzf0InmUgqbVc/4SZBCYMoM54=; b=g2Dj2QhoG4UwR2LlxwlU3MeXS2jPmTzDdkBKIYGkQeHQMbgt3vYt18cXYsJIB6q2SA Z41UpJms74UBj+i4D5JYVYtpOGVFGPY4DMnpoK73Cm1RNDi995tWExG3q8aWDgHFIU74 utqKtA/5ZQfgj5cvPTpT/jMr4FAd+Hb5ko9vSf5QHi6B7jkBhXfUwTFSyJk6vp5ZKqGW yFFgs2J8LG0lJLQrUrhSGzpvrkKMY/vrpT57wplMCUtuDu1VGrNysJ8Xei8nwHs/clps UMyeN+431X7iKRYLrwfHc3YPu9ta5j5sq8Vdnk0eevB1RIQysIoPRomUCM92M8HjFlQS jlOQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=pm8Lj7iMQpiKgurPQiEzf0InmUgqbVc/4SZBCYMoM54=; b=FspvsDQxvfxNwwCv2zFLHkFkpJhX2eQ0QUrO+Ho1flyl45i55T+/O5yxpJygDPWVlG iUx1gb1aPHwfamSarBrGY+ukjupIDRwLGo8WZeFTH4X98s+/OxgimjMO4uKKm6o4YRO3 XDxNNFcIyFHOYHPcvwkerDsypzHuA+RH3W7HbscOmAtBlnlkssFhA8n4l4Yab1ZutLsS mm82zeqh+d1+A6Lv8R0AQ97uXrIkGlX+DVR0+WvR09h0qRtEYzEtY78UyGS0Eqtvsaa5 cKJpi8yq7LRaaOpuZHHIDd8IHQH28NBy5OQwxXy9gkw7ftj7kRTy46NZQnfdfmvAF8bf 2RVw== X-Gm-Message-State: APjAAAWzH2h7OkPMU6x4FXpWM4Ptv2PUxQCczQo7A2VlpFJssLzSNAxc yJTfE7yFqbgt2bgUEt/B2UY4FLLcADHSiG4WsEeD4zkxnkCA0w== X-Google-Smtp-Source: APXvYqzQdD3LtHa9rrRuJ4ZC4/DpEycLifoxyTH/L3y60oz8K+YeD0BMvrWE5G6VtPotXkHNLVi7IYu3beSwiVD/A9c= X-Received: by 2002:a92:bf10:: with SMTP id z16mr15027761ilh.87.1581948425140; Mon, 17 Feb 2020 06:07:05 -0800 (PST) MIME-Version: 1.0 References: <17010109880.27b7.727fde9afb6860196ef19c74546e60d2@ipp.mpg.de> <1703f6084d8.27b7.727fde9afb6860196ef19c74546e60d2@ipp.mpg.de> In-Reply-To: From: Wes McKinney Date: Mon, 17 Feb 2020 08:06:29 -0600 Message-ID: Subject: Re: Arrow & Time series analytics To: =?UTF-8?Q?Ra=C3=BAl_Bocanegra_Algarra?= Cc: "user@arrow.apache.org" Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable See https://www.apache.org/legal/resolved.html#weak-copyleft-licenses Reuse is permitted in binary form only but MPL 2.0 is incompatible for reuse or derivative works in source form. This means to use any of such code as a starting point for new source code development in Apache Arrow is not possible. On Mon, Feb 17, 2020 at 8:02 AM Ra=C3=BAl Bocanegra Algarra wrote: > > Hi Wes, > > As far as we understand it we use MPL2 because you can use it privately f= or your projects, but if you modify it you must contribute to our library, = keeping the rest of your project private. I wonder what kind of situation c= ould you find that prevents you from using the library in any Apache projec= ts. > > Ra=C3=BAl Bocanegra Algarra. C++ Software Engineer. > > ________________________________ > De: Wes McKinney > Enviado: jueves, 13 de febrero de 2020 22:41 > Para: user@arrow.apache.org > Cc: Ra=C3=BAl Bocanegra Algarra > Asunto: Re: Arrow & Time series analytics > > Ra=C3=BAl -- it's an aside, but could you comment on your choice of the M= PL > 2.0 license? It puts you in an odd no-man's land between GPL and > permissive licenses, neither satisfying GPL proponents nor allowing > reuse in Apache 2.0 projects. > > Thanks > > On Thu, Feb 13, 2020 at 10:27 AM Simon Dumke wro= te: > > > > Thanks Joris, Wes and Raul for the feedback. I'm still working on convi= ncing other people in our organisation that we would benefit from integrati= ng artow into our systems and gradually replacing differen proprietary, int= ernal data structures ;-) > > > > The Khiva project sounds like a good starting point for integrating tim= e series analytics into the arrow-verse=E2=84=A2, although i can not measur= e from some shallow looks into the code, whether or how much thosealgorithm= s are working on arrow structures. I'll keep an eye on it. > > > > Great thanks and kind regards, > > Simon > > > > Am 7. Februar 2020 13:07:06 schrieb Ra=C3=BAl Bocanegra Algarra : > >> > >> Hi Simon, > >> > >> I am actually working in a Time Series data analytics platform using A= pache Arrow called Shapelets. > >> We have an open-source library called Khiva which is a collection of a= lgorithms optimized for GPU-CPU for time-series analysis. > >> Currently we use Arrow to share in memory time series between differen= t processes. > >> You can DM for more information. > >> > >> Thanks, > >> > >> Ra=C3=BAl Bocanegra Algarra > >> > >> Software Engineer > >> > >> M: + 34 617 83 64 45 - E: raul.bocanegra@shapelets.io > >> > >> > >> ________________________________ > >> From: Simon Dumke > >> Sent: Tuesday, February 4, 2020 12:58 PM > >> To: user@arrow.apache.org > >> Subject: Arrow & Time series analytics > >> > >> Hi all, > >> > >> I have not yet found anything in that regard - hence my asking here: > >> > >> Do you know of any application of, any library about, architecture > >> around... Apache Arrow for time series data analytics? > >> > >> Thanks a lot for the great work! > >> Simon > >> > >> > > >