From user-return-849-archive-asf-public=cust-asf.ponee.io@arrow.apache.org Mon Dec 14 21:33:06 2020 Return-Path: X-Original-To: archive-asf-public@cust-asf.ponee.io Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mxout1-ec2-va.apache.org (mxout1-ec2-va.apache.org [3.227.148.255]) by mx-eu-01.ponee.io (Postfix) with ESMTPS id B70F8180634 for ; Mon, 14 Dec 2020 22:33:06 +0100 (CET) Received: from mail.apache.org (mailroute1-lw-us.apache.org [207.244.88.153]) by mxout1-ec2-va.apache.org (ASF Mail Server at mxout1-ec2-va.apache.org) with SMTP id 99C58456CD for ; Mon, 14 Dec 2020 21:33:05 +0000 (UTC) Received: (qmail 30048 invoked by uid 500); 14 Dec 2020 21:33:05 -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 30038 invoked by uid 99); 14 Dec 2020 21:33:05 -0000 Received: from spamproc1-he-fi.apache.org (HELO spamproc1-he-fi.apache.org) (95.217.134.168) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 14 Dec 2020 21:33:05 +0000 Received: from localhost (localhost [127.0.0.1]) by spamproc1-he-fi.apache.org (ASF Mail Server at spamproc1-he-fi.apache.org) with ESMTP id 552BDC0115 for ; Mon, 14 Dec 2020 21:33:04 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamproc1-he-fi.apache.org X-Spam-Flag: NO X-Spam-Score: 0.702 X-Spam-Level: X-Spam-Status: No, score=0.702 tagged_above=-999 required=6.31 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.2, KAM_NUMSUBJECT=0.5, SPF_NONE=0.001, URIBL_BLOCKED=0.001] autolearn=disabled Authentication-Results: spamproc1-he-fi.apache.org (amavisd-new); dkim=pass (2048-bit key) header.d=achren-org.20150623.gappssmtp.com Received: from mx1-he-de.apache.org ([116.203.227.195]) by localhost (spamproc1-he-fi.apache.org [95.217.134.168]) (amavisd-new, port 10024) with ESMTP id x7y_Q1WRGtdy for ; Mon, 14 Dec 2020 21:33:03 +0000 (UTC) Received-SPF: None (mailfrom) identity=mailfrom; client-ip=2a00:1450:4864:20::330; helo=mail-wm1-x330.google.com; envelope-from=nite@achren.org; receiver= Received: from mail-wm1-x330.google.com (mail-wm1-x330.google.com [IPv6:2a00:1450:4864:20::330]) by mx1-he-de.apache.org (ASF Mail Server at mx1-he-de.apache.org) with ESMTPS id 8CA807F9EE for ; Mon, 14 Dec 2020 21:33:03 +0000 (UTC) Received: by mail-wm1-x330.google.com with SMTP id v14so15082225wml.1 for ; Mon, 14 Dec 2020 13:33:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=achren-org.20150623.gappssmtp.com; s=20150623; h=mime-version:from:date:message-id:subject:to; bh=ueGnKQsKNHV9O4Xu6+n2keOSF/BSIQxyD8vZEtTCiP0=; b=mfiivfp3u2RxvY9f/p8DWxl60Hos2dyFhVLKWagbbOgplc4RrJx0wBebFKQouGNW2j f9RDVACPH44Ictaq4+PLcBvV3OuYhSvTJulHTiwNPonUTeztwOQuVhC7xcCiicYqHnNL dohoc6jOc35XgO04Rt6sw1NjCbBntJl1zE5HMi1Bl/GNWXuBuUjqQDEhtrOlW8zQuBXW uSjS4e1KE2tw/220LBLaEdmNW5tKRNQgwoz2YO9QlbTLDIo0aIvlGXnsv71dblmKBiZq +iajJgxMaxeXCOeRy6lZXQnTHMqNa7Wkh1n5PWpjG4WrU0OLRGH+ryxF3nUTqCGPCdWs PThQ== 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=ueGnKQsKNHV9O4Xu6+n2keOSF/BSIQxyD8vZEtTCiP0=; b=pX5XrJHeKLfQbt2QHm2t79xVqpjU8rKSpZYF3MzWBjt/fgF7WxH+BeC+kzyAaue3mo ODr21tEU1/OBQ8KQHtCCK4ZVWS5YrRGcNnbv5WMOnMMmwDDAAbfw3VYtIwWNrmZAZC+z wYr5uHOwK/TOdIl+iYl0ApuIQjDtGVLpiyela1IGhVZYj/i0nZA+b5+697QH3XpvMLo9 9YOtP5QR4wzS2S4lTU8LSw5net2dOXWE54zgUQR2w/or+NnufqnmO08nTRgDYV3bINOJ mTK7utMsh+AejS5ATvM5YM5LhczVjo0R0/1wlYnNYjqBTtL7lhPQtWV97JZaSNvHeZgN 6mgQ== X-Gm-Message-State: AOAM531/XHLICKgPmfoQJOLu+whKetq3TkUw/PdxJArjOxVyQxtbPHQ1 IlfCZAEIbWpFwrIHS/s8bEJadjQpYcZoNh7SPDDNsNCzMK3aS20aXbg= X-Google-Smtp-Source: ABdhPJzg5QV07JHBDoakzYu+H6dKVvwENz5NaKRtlH1ghUolc0Grr+b7z6uOf/JyWoWavK/DyPgwclmrLT81okKbMA4= X-Received: by 2002:a1c:9949:: with SMTP id b70mr4408224wme.72.1607981582538; Mon, 14 Dec 2020 13:33:02 -0800 (PST) MIME-Version: 1.0 From: Andrew Clancy Date: Mon, 14 Dec 2020 21:32:31 +0000 Message-ID: Subject: [javascript] cant get timestamps in arrow 2.0 To: user@arrow.apache.org Content-Type: multipart/alternative; boundary="00000000000008679f05b67363b9" --00000000000008679f05b67363b9 Content-Type: text/plain; charset="UTF-8" Hi all, I have a simple feather file created via a pandas to_feather with a datetime64[ns] column, and cannot get timestamps in javascript apache-arrow@2.0.0 See this notebook: https://observablehq.com/@nite/apache-arrow-timestamp-investigation I'm guessing I'm missing something, has anyone got any suggestions, or decent examples of reading a file created in pandas? I've seen in examples of apache-arrow@0.3.1 where dates stored as an array of 2 ints. File was created with: import pandas as pd pd.read_parquet('sample.parquet') df.to_feather('sample-seconds.feather') Final Q: I'm assuming this is the best place for this question? Happy to post elsewhere if there's any other forums, or if this should be a JIRA ticket? Thanks! Andy --00000000000008679f05b67363b9 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi all,

I have a simple feather file created via = a pandas to_feather with a datetime64[ns]=C2=A0column, and cannot get times= tamps in javascript apache-arrow@2.0.0=C2=A0

See this notebook:
https://observablehq.com/@nite/apache= -arrow-timestamp-investigation

I'm guessing I'm missing s= omething, has anyone got any suggestions, or decent examples of reading a f= ile created in pandas? I've seen in examples of apache-arrow@0.3.1 wher= e dates stored as an array of 2 ints.=C2=A0

File was created with:=C2= =A0

import pandas as pd
pd.read_parquet(&= #39;sample.parquet')
df.to_feather('sample-seconds.feather')=

Final Q: I'm assuming this is the best place for this= question? Happy=C2=A0to post elsewhere if there's any other forums, or= if this should be a JIRA ticket?

Thanks!
Andy

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