Return-Path: X-Original-To: archive-asf-public-internal@cust-asf2.ponee.io Delivered-To: archive-asf-public-internal@cust-asf2.ponee.io Received: from cust-asf.ponee.io (cust-asf.ponee.io [163.172.22.183]) by cust-asf2.ponee.io (Postfix) with ESMTP id 2149D200BF5 for ; Sat, 7 Jan 2017 08:21:03 +0100 (CET) Received: by cust-asf.ponee.io (Postfix) id 1FC87160B2F; Sat, 7 Jan 2017 07:21:03 +0000 (UTC) Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by cust-asf.ponee.io (Postfix) with SMTP id 6A4D5160B3C for ; Sat, 7 Jan 2017 08:21:02 +0100 (CET) Received: (qmail 24549 invoked by uid 500); 7 Jan 2017 07:21:01 -0000 Mailing-List: contact dev-help@gearpump.incubator.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@gearpump.incubator.apache.org Delivered-To: mailing list dev@gearpump.incubator.apache.org Received: (qmail 24538 invoked by uid 99); 7 Jan 2017 07:21:01 -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; Sat, 07 Jan 2017 07:21:01 +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 CBF3AC08DD for ; Sat, 7 Jan 2017 07:21:00 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd1-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -7.019 X-Spam-Level: X-Spam-Status: No, score=-7.019 tagged_above=-999 required=6.31 tests=[KAM_LAZY_DOMAIN_SECURITY=1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, RP_MATCHES_RCVD=-2.999] autolearn=disabled Received: from mx1-lw-eu.apache.org ([10.40.0.8]) by localhost (spamd1-us-west.apache.org [10.40.0.7]) (amavisd-new, port 10024) with ESMTP id v7KZuTJ9AEbV for ; Sat, 7 Jan 2017 07:21:00 +0000 (UTC) Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by mx1-lw-eu.apache.org (ASF Mail Server at mx1-lw-eu.apache.org) with SMTP id 45D135FC37 for ; Sat, 7 Jan 2017 07:20:59 +0000 (UTC) Received: (qmail 24401 invoked by uid 99); 7 Jan 2017 07:20:58 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 07 Jan 2017 07:20:58 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 5BC042C03DC for ; Sat, 7 Jan 2017 07:20:58 +0000 (UTC) Date: Sat, 7 Jan 2017 07:20:58 +0000 (UTC) From: "Manu Zhang (JIRA)" To: dev@gearpump.incubator.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Resolved] (GEARPUMP-249) reduce is not executed when following flatMap in Stream DSL MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Sat, 07 Jan 2017 07:21:03 -0000 [ https://issues.apache.org/jira/browse/GEARPUMP-249?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Manu Zhang resolved GEARPUMP-249. --------------------------------- Resolution: Fixed > reduce is not executed when following flatMap in Stream DSL > ----------------------------------------------------------- > > Key: GEARPUMP-249 > URL: https://issues.apache.org/jira/browse/GEARPUMP-249 > Project: Apache Gearpump > Issue Type: Bug > Components: streaming > Affects Versions: 0.8.2 > Reporter: Manu Zhang > Assignee: Manu Zhang > Fix For: 0.8.3 > > > The issue can be reproduced if a redundant {{map}} is added between {{groupBy}} and {{sum}} > {code} > app.source(data.lines.toList, 1, "source"). > // word => (word, count) > flatMap(line => line.split("[\\s]+")).map((_, 1)). > // (word, count1), (word, count2) => (word, count1 + count2) > groupByKey().sum.log > {code} > The problem is with {{AndThen#process}} method, where {{flatMap}} is lazily/ never executed. > {code} > override def process(value: IN): TraversableOnce[OUT] = { > first.process(value).flatMap(second.process) > } > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)