From dev-return-10637-archive-asf-public=cust-asf.ponee.io@gora.apache.org Tue Jun 26 23:53:25 2018 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 [140.211.11.3]) by mx-eu-01.ponee.io (Postfix) with SMTP id E2FFA180636 for ; Tue, 26 Jun 2018 23:53:24 +0200 (CEST) Received: (qmail 76915 invoked by uid 500); 26 Jun 2018 21:53:24 -0000 Mailing-List: contact dev-help@gora.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@gora.apache.org Delivered-To: mailing list dev@gora.apache.org Received: (qmail 76896 invoked by uid 99); 26 Jun 2018 21:53:23 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd3-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 26 Jun 2018 21:53:23 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd3-us-west.apache.org (ASF Mail Server at spamd3-us-west.apache.org) with ESMTP id E282D1801C2 for ; Tue, 26 Jun 2018 21:53:22 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd3-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: 1.88 X-Spam-Level: * X-Spam-Status: No, score=1.88 tagged_above=-999 required=6.31 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=2, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=disabled Authentication-Results: spamd3-us-west.apache.org (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mx1-lw-us.apache.org ([10.40.0.8]) by localhost (spamd3-us-west.apache.org [10.40.0.10]) (amavisd-new, port 10024) with ESMTP id yBQcxPbgJPBF for ; Tue, 26 Jun 2018 21:53:22 +0000 (UTC) Received: from mail-qt0-f196.google.com (mail-qt0-f196.google.com [209.85.216.196]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTPS id DC9CE5F244 for ; Tue, 26 Jun 2018 21:53:21 +0000 (UTC) Received: by mail-qt0-f196.google.com with SMTP id d23-v6so2557539qtp.1 for ; Tue, 26 Jun 2018 14:53:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=hUjVe6QypnElPAqGAsFJVQicm1Os1tcVX+xGUPWZjC4=; b=J9F6mMNwv22eGpBGgjTnr6I/Cf0TIZxpUSRwx0C04bnBmlGyhDU5Ll9E2lsOlkWIfn Evm2+kZNB0YW351TFpZWh4E3rz4Q4p5rLWoqN2OjFJl3/6u5+xIJe3CM6pjf38qcNyqy kJYaEn9WAC46DW1Gcj8543aeOEkUiEWJd/uA5QzZfWRZbV0POA+taPQzWSPFyJ/UDdL/ R9l6yTmybvrigp7ac8ZQM4btVsDCSPtXiFxqHskft40Q1+qKh1pnjrUHuAL1etLO9kA4 KwUaf4ouC2gyRs0DNg8Rs66nWGzo7Xe1wRnBhrb1KgkolMnLOXQty5tCNbFAIdf/E3k8 +Xig== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=hUjVe6QypnElPAqGAsFJVQicm1Os1tcVX+xGUPWZjC4=; b=XqZE5RfIM8ZpvvPWxFMMvOh7KTsP0UgmOSk+3gcpa4Aq/WdAaVDftCBiYyHoDdrtXk tqft3/eyqko8Spwcyw8gUy8EN0zF17GxlIOd3syF1o19s8KhY1ajbEfQHVYSFdw/AfxW oHXKs85mVqPOxh2jrP9k1oGxEVoK7h/uNZ0ciizh19OQiTz8g5DVyYX+luAW1gAgcUCm Mr5f5jZgFJiTRuEKaZLCVsWNX4N5K1MJuH7qsvdoRANdLTK/Xs+qC0QtjcBJwX3R1GVk 9H2oa4r659UPfhkpTa51BQt7mYNn6yjDChhe9JfGF7AKhUWqnh7jd8RHJWl8xNHXtl7y aQog== X-Gm-Message-State: APt69E29Nm9PbDZYIfGr3ub2qSnHjf0HUlIv0dic45gk4zzKO3oZxOOq /cVamS5sTPvuq0tikmOTOG9g+jjof9CdfsMZm6jhAw== X-Google-Smtp-Source: AAOMgpd73AX2ytF0a0WgCwbhBm5QH3nXL84pTPJciD+dpLF2F7YkrOULjCHnpnE8RoHaq/+hZMu7y1jAd7gB6YeuOiw= X-Received: by 2002:a0c:bfd8:: with SMTP id u24-v6mr3210077qvj.158.1530050001300; Tue, 26 Jun 2018 14:53:21 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:ac8:f13:0:0:0:0:0 with HTTP; Tue, 26 Jun 2018 14:52:40 -0700 (PDT) In-Reply-To: References: From: Alfonso Nishikawa Date: Tue, 26 Jun 2018 20:52:40 -0100 Message-ID: Subject: Re: [GSOC 2018] Ignite Backend - Composite primary key. To: "" Content-Type: multipart/alternative; boundary="000000000000d0f3c2056f92862a" --000000000000d0f3c2056f92862a Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi, If I am not wrong, Cassandra supports composite keys [1]. You will find the documentation at [2]. HBase doesn't support composite keys [3]. I don't know about the rest of the backends :( [1] - https://issues.apache.org/jira/browse/GORA-267 [2] - http://gora.apache.org/current/gora-cassandra.html [3] - https://github.com/apache/gora/blob/apache-gora-0.8/gora-hbase/src/main/jav= a/org/apache/gora/hbase/util/HBaseByteInterface.java#L179 Regards, Alfonso Nishikawa 2018-06-26 4:08 GMT-01:00 carlos mu=C3=B1oz : > Hi. > > While implementing some functionalities of the new Ignite backend, I > noticed that Ignite supports composite primary keys. So I wondered if suc= h > feature could be useful within Gora or it is better to restrict persiste= nt > entities to have a single primary key field. Have other backends already > dealt with that?. > > Regards. > Carlos > --000000000000d0f3c2056f92862a--