From user-return-240-archive-asf-public=cust-asf.ponee.io@arrow.apache.org Sat Nov 9 08:53:55 2019 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 022CC1804BB for ; Sat, 9 Nov 2019 09:53:54 +0100 (CET) Received: (qmail 54737 invoked by uid 500); 9 Nov 2019 08:53:54 -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 54727 invoked by uid 99); 9 Nov 2019 08:53:54 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd1-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 09 Nov 2019 08:53:54 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd1-us-west.apache.org (ASF Mail Server at spamd1-us-west.apache.org) with ESMTP id 79EB5C02B1 for ; Sat, 9 Nov 2019 08:53:53 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd1-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -0.001 X-Spam-Level: X-Spam-Status: No, score=-0.001 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, HTML_MESSAGE=0.2, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=disabled Authentication-Results: spamd1-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 (spamd1-us-west.apache.org [10.40.0.7]) (amavisd-new, port 10024) with ESMTP id G0P_gHbPQMnS for ; Sat, 9 Nov 2019 08:53:52 +0000 (UTC) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=209.85.208.41; helo=mail-ed1-f41.google.com; envelope-from=baibaichen@gmail.com; receiver= Received: from mail-ed1-f41.google.com (mail-ed1-f41.google.com [209.85.208.41]) by mx1-ec2-va.apache.org (ASF Mail Server at mx1-ec2-va.apache.org) with ESMTPS id 219CEBC555 for ; Sat, 9 Nov 2019 08:53:52 +0000 (UTC) Received: by mail-ed1-f41.google.com with SMTP id p59so7818232edp.7 for ; Sat, 09 Nov 2019 00:53:51 -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; bh=uB+KTLgUVZ/QaQ9FFEI09wUBPrVe4H1LA8bY/kUbHak=; b=uqRqGOTSgneshCSAU23AlzeWDKXQgL8QguQAAfWK+UoHVJ8N+RqSJkvWLUcGVeYXIA oox2W2YbtFdIdw7XMSx8jqFAiJNTEFuyId3/1ndXyWRiwfxNXtXZuBsR611C33o6brzd tOTr6VcT7/2FdR7v8KLK5us6T82kj4dlckIEPJBwrZ6MXQeHhQKE+0pgNsBNba6YEvX3 9L7PzTvrwLHkO6gqMVZ6VFMwYNEaRGUCv7Kv4GCwwuRJ0PDToY5kAbuMcHTbRiEfc67l P0trbZe1nLEBe9lQB7c7MM8l+YfH5LDwf6c9Sn7KnREPuKA4CyX6yXJV9ujw60oZdIqY uWmA== 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; bh=uB+KTLgUVZ/QaQ9FFEI09wUBPrVe4H1LA8bY/kUbHak=; b=uP+K9ISkMg+vfZrw7h1hbngHzvqNZtI5q2iFug/1inUZzj05oeaQ1n8QtgxxqrusFs 3UbRCmiHjDqZEwn795Ve/hj1ucVziq+RZIBesXyr60bjlZohAYYEhXn4JaA2b33pl9ts om0z9JCmao90zD6U/EGUmwyPbWBY60fxfdv21O3KykABvOZmzlcGCG4Sa920UdI1eZ3l apnR61VJS3AKDkIwGnpNiCAseIfjAClid91F6LejR6JfG9GHRUTwEMjOCMN+QHYeSyPK qUrbxTVmr5kFiIjPT8lciMddLrQf3TRMKYA1KzNT/l/Nl1+1kE6Jn+X/ZPQG3oHWyqmD wcsw== X-Gm-Message-State: APjAAAXLzMGXVkID4PkfnowOE/5fCpYHhHOoEqgbeERVtwKh3b0F291V pkP6QkSgreJiKsxNiTDB7aQ22CKtCJ+oPRM9QKLK9MVm X-Google-Smtp-Source: APXvYqwG/sX8zw39pzRNSMfVC0jmzBHVQSrkColOF1Geq57d4Xv6kw5QrqbCgMZI9AEzyxUIXLtCwf3SWrB0xlQqVVA= X-Received: by 2002:a17:906:5586:: with SMTP id y6mr12957331ejp.76.1573289630977; Sat, 09 Nov 2019 00:53:50 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Chang Chen Date: Sat, 9 Nov 2019 16:53:39 +0800 Message-ID: Subject: Parquet cpp status To: user@arrow.apache.org Content-Type: multipart/alternative; boundary="0000000000009551720596e6097d" --0000000000009551720596e6097d Content-Type: text/plain; charset="UTF-8" Hi I am trying to find doc about current parquet-cpp current status. i googled it, but i didn't find any useful information. here are what i concerned about: #1 column indexes (https://issues.apache.org/jira/browse/PARQUET-1201), the corresponding java implementation already supported it last year, though it wasn't pushed to repo. #2 A vectorized column reader interface which can be integrated in JAVA. #3 the feature was illustrated here( https://www.dremio.com/webinars/columnar-roadmap-apache-parquet-and-arrow/), a better predict push down algorithm. Thanks Chang --0000000000009551720596e6097d Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi=C2=A0

I am trying to find doc about = current parquet-cpp current status.=C2=A0 i googled it, but i didn't fi= nd any useful information.

here are what i concern= ed about:
#1=C2=A0 column indexes=C2=A0(https://issues.apac= he.org/jira/browse/PARQUET-1201), the=C2=A0corresponding java implement= ation already supported it last year, though it wasn't pushed to repo.<= /div>
#2=C2=A0 A vectorized column reader interface which can be integr= ated=C2=A0in JAVA.
#3 the feature was=C2=A0illustrated here(https://www.dremio.com/webinars/columnar-roadmap-apache-parquet-and-arrow= /),=C2=A0 a better predict push down algorithm.

Thanks
Chang
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