From issues-return-217317-archive-asf-public=cust-asf.ponee.io@spark.apache.org Fri Mar 1 16:10:05 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 18269180647 for ; Fri, 1 Mar 2019 17:10:04 +0100 (CET) Received: (qmail 23131 invoked by uid 500); 1 Mar 2019 16:10:04 -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 23122 invoked by uid 99); 1 Mar 2019 16:10:04 -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; Fri, 01 Mar 2019 16:10:04 +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 C80CBC198D for ; Fri, 1 Mar 2019 16:10:03 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd4-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -110.301 X-Spam-Level: X-Spam-Status: No, score=-110.301 tagged_above=-999 required=6.31 tests=[ENV_AND_HDR_SPF_MATCH=-0.5, 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 (spamd4-us-west.apache.org [10.40.0.11]) (amavisd-new, port 10024) with ESMTP id rshverjS7bO7 for ; Fri, 1 Mar 2019 16:10:02 +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 B67A45F485 for ; Fri, 1 Mar 2019 16:10:02 +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 F3719E280C for ; Fri, 1 Mar 2019 16:10:00 +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 8F741256F4 for ; Fri, 1 Mar 2019 16:10:00 +0000 (UTC) Date: Fri, 1 Mar 2019 16:10:00 +0000 (UTC) From: "Erik van Oosten (JIRA)" To: issues@spark.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Created] (SPARK-27025) Speed up toLocalIterator MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 Erik van Oosten created SPARK-27025: --------------------------------------- Summary: Speed up toLocalIterator Key: SPARK-27025 URL: https://issues.apache.org/jira/browse/SPARK-27025 Project: Spark Issue Type: Wish Components: Spark Core Affects Versions: 2.3.3 Reporter: Erik van Oosten Method {{toLocalIterator}} fetches the partitions to the driver one by one. However, as far as I can see, any required computation for the yet-to-be-fetched-partitions is not kicked off until it is fetched. Effectively only one partition is being computed at the same time. Desired behavior: immediately start calculation of all partitions while retaining the download-a-partition at a time behavior. -- 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