From dev-return-10932-archive-asf-public=cust-asf.ponee.io@arrow.apache.org Mon Mar 11 04:49:53 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 [140.211.11.3]) by mx-eu-01.ponee.io (Postfix) with SMTP id 6B99C180621 for ; Mon, 11 Mar 2019 05:49:52 +0100 (CET) Received: (qmail 10209 invoked by uid 500); 11 Mar 2019 04:49:45 -0000 Mailing-List: contact dev-help@arrow.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@arrow.apache.org Delivered-To: mailing list dev@arrow.apache.org Received: (qmail 10188 invoked by uid 99); 11 Mar 2019 04:49:44 -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, 11 Mar 2019 04:49:44 +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 E7309C04EF for ; Mon, 11 Mar 2019 04:49:43 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd4-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: 1.798 X-Spam-Level: * X-Spam-Status: No, score=1.798 tagged_above=-999 required=6.31 tests=[DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=2, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-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-lw-us.apache.org ([10.40.0.8]) by localhost (spamd4-us-west.apache.org [10.40.0.11]) (amavisd-new, port 10024) with ESMTP id vdsriSKU8hzG for ; Mon, 11 Mar 2019 04:49:42 +0000 (UTC) Received: from mail-lj1-f178.google.com (mail-lj1-f178.google.com [209.85.208.178]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTPS id 26EB15F1A0 for ; Mon, 11 Mar 2019 04:49:42 +0000 (UTC) Received: by mail-lj1-f178.google.com with SMTP id d14so2792444ljl.9 for ; Sun, 10 Mar 2019 21:49:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=IEKYkygtG4qZN7W3e/JfS0nIYIMdyl1+skCaJM6y0hs=; b=kCIyUm/qfiAJVcsVYxL22HGcsjkpcBdBMzDTgtBzhTvBjn6f4f3KKO94Zi5JCalxRC 1a8+83tvvCJQ24K/u0MRlVzn1rWVVwmYDra+gxv1L9/TPLx30WCtNFvNWI8FIa2tGdMS JmLZo6/2SNn4KN+yALTP3mB+TzN9W+wzFSQoUPHRTZrWAahpRsY1sSbWTrtl9MQkbD9E KjuJ7NXSJG49agrx26b+34ogD80M30B/tR51cNpu7CC/4sVO5IRzG3KsGOaTfB435PPL WBYtB0/gSeOUjpQPe78NJzbM6QhBSSRx2Kx2/jKpedFuvfvWQ2+WEfbbT0f4IqnESkOr hiNw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=IEKYkygtG4qZN7W3e/JfS0nIYIMdyl1+skCaJM6y0hs=; b=PZgQxbD8a7QCSL3BqR8x0fwtxX3C19+bJsZLhDTHt+cfhFRSOjF3eVSQYsx2zFIxcC PvtwZmlaGUWpkHU3G7+zMNSiKsPaAIEG+CROpNWLz343lGvrzWv4OqjXqLXvNE4uJuB2 haH7usaBVYqh2F0SEJnnylxoES0UAEjAy4nTReQ6GA/dmkmnucxwAMReAeVeS61/xhrd dorgy4FXg1I/wsNLkJItCequCcvqQ8V45Pvufq+J+QiH3PIy7dfia5omJur9APoqS9fQ VxY+vRmOe82uKgvCP/sHnKzrF6SKisbFcDmZGmidXimsyMv5StcIjxSD4BW7q/VXIbnp Ln7g== X-Gm-Message-State: APjAAAWE9P+mGXd8kqT0VFRLxE99OnRC9ZAfRd3OcnxeU50avOqM521V 1WkutYV6iMJW1CS1zkxdaCjBoiC8eVONavZVS16pewc= X-Google-Smtp-Source: APXvYqz+zIbuIcaPNAHEWp0HipKc63WHJo1pKX4U0ttj+7S8NfpAjVlerP56KIBun9Vjyn9rDsJfLhwwd9YMvflAjBY= X-Received: by 2002:a2e:8157:: with SMTP id t23mr14709747ljg.195.1552279780380; Sun, 10 Mar 2019 21:49:40 -0700 (PDT) MIME-Version: 1.0 From: Rares Vernica Date: Sun, 10 Mar 2019 21:49:28 -0700 Message-ID: Subject: Read Arrow 0.9.0 output using newer pyarrow version To: dev@arrow.apache.org Content-Type: multipart/alternative; boundary="000000000000e6d9060583ca4cc3" --000000000000e6d9060583ca4cc3 Content-Type: text/plain; charset="UTF-8" Hello, I have a C++ library using Arrow 0.9.0 to serialize data The code looks like this: std::shared_ptr arrowBatch; arrowBatch = arrow::RecordBatch::Make(_arrowSchema, nCells, _arrowArrays); std::shared_ptr arrowBuffer(new arrow::PoolBuffer(_arrowPool)); arrow::io::BufferOutputStream arrowStream(arrowBuffer); std::shared_ptr arrowWriter; arrow::ipc::RecordBatchStreamWriter::Open(&arrowStream, _arrowSchema, &arrowWriter); arrowWriter->WriteRecordBatch(*arrowBatch); ... reinterpret_cast(arrowBuffer->data()), arrowBuffer->size()) ... The output bytes are then read in Python using pyarrow: pyarrow.RecordBatchStreamReader(pyarrow.BufferReader(buf)).read_pandas() Since the C++ side uses Arrow 0.9.0 I have been using pyarrow==0.9.0. When using Python 3.7, getting pyarrow=0.9.0 is not easy since there are no per-compiled .whl packages on PyPI. I wonder if I could use newer pyarrow versions to parse the Arrow 0.9.0 ouput? Is the format compatible? Thanks! Rares --000000000000e6d9060583ca4cc3--