From issues-return-189728-archive-asf-public=cust-asf.ponee.io@spark.apache.org Fri Apr 20 07:53:04 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 74E4618076D for ; Fri, 20 Apr 2018 07:53:04 +0200 (CEST) Received: (qmail 55715 invoked by uid 500); 20 Apr 2018 05:53:03 -0000 Mailing-List: contact issues-help@spark.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list issues@spark.apache.org Received: (qmail 55706 invoked by uid 99); 20 Apr 2018 05:53:03 -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; Fri, 20 Apr 2018 05:53:03 +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 CD8ADC65C2 for ; Fri, 20 Apr 2018 05:53:02 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd1-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -109.501 X-Spam-Level: X-Spam-Status: No, score=-109.501 tagged_above=-999 required=6.31 tests=[ENV_AND_HDR_SPF_MATCH=-0.5, KAM_ASCII_DIVIDERS=0.8, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, USER_IN_DEF_SPF_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mx1-lw-us.apache.org ([10.40.0.8]) by localhost (spamd1-us-west.apache.org [10.40.0.7]) (amavisd-new, port 10024) with ESMTP id 1NVNGxgYJ_u8 for ; Fri, 20 Apr 2018 05:53:02 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTP id 15B645F67B for ; Fri, 20 Apr 2018 05:53:02 +0000 (UTC) Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id 2B380E0F36 for ; Fri, 20 Apr 2018 05:53:01 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id 541C9241C8 for ; Fri, 20 Apr 2018 05:53:00 +0000 (UTC) Date: Fri, 20 Apr 2018 05:53:00 +0000 (UTC) From: "Dedunu Dhananjaya (JIRA)" To: issues@spark.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (SPARK-22448) Add functions like Mode(), NumNulls(), etc. in Summarizer MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/SPARK-22448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16445355#comment-16445355 ] Dedunu Dhananjaya commented on SPARK-22448: ------------------------------------------- I'm thinking about implementing this. Is it okay to start working on this? > Add functions like Mode(), NumNulls(), etc. in Summarizer > --------------------------------------------------------- > > Key: SPARK-22448 > URL: https://issues.apache.org/jira/browse/SPARK-22448 > Project: Spark > Issue Type: New Feature > Components: Optimizer > Affects Versions: 2.2.0 > Reporter: Abdeali Kothari > Priority: Trivial > > Would be very useful to have a MODE() function in the Summary statistics currently supported by DataSets. > I can see that the Summarizer has many useful functions in 2.3.0 and it would be useful to add the following to it: > - Mode - Element that occurs maximum number of times > - CSS - Cumulative Sum of Squares ... Sum((x - mean)^2) > - NumNull - The number of values that are NULL in the column > - SUM - Just the sum of the column ... -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org For additional commands, e-mail: issues-help@spark.apache.org