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 3F984200C3C for ; Mon, 3 Apr 2017 17:18:45 +0200 (CEST) Received: by cust-asf.ponee.io (Postfix) id 3E570160B9C; Mon, 3 Apr 2017 15:18:45 +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 67101160B8F for ; Mon, 3 Apr 2017 17:18:44 +0200 (CEST) Received: (qmail 50760 invoked by uid 500); 3 Apr 2017 15:18:43 -0000 Mailing-List: contact issues-help@flink.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@flink.apache.org Delivered-To: mailing list issues@flink.apache.org Received: (qmail 50747 invoked by uid 99); 3 Apr 2017 15:18:43 -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, 03 Apr 2017 15:18:43 +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 42F6BC0635 for ; Mon, 3 Apr 2017 15:18:43 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd4-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -100.002 X-Spam-Level: X-Spam-Status: No, score=-100.002 tagged_above=-999 required=6.31 tests=[RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, 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 zw-zI9wJc-s9 for ; Mon, 3 Apr 2017 15:18:42 +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 63C8C5F642 for ; Mon, 3 Apr 2017 15:18:42 +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 D236BE039F for ; Mon, 3 Apr 2017 15:18:41 +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 90C7624017 for ; Mon, 3 Apr 2017 15:18:41 +0000 (UTC) Date: Mon, 3 Apr 2017 15:18:41 +0000 (UTC) From: "Kostas Kloudas (JIRA)" To: issues@flink.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Assigned] (FLINK-6215) Make the StatefulSequenceSource scalable. MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Mon, 03 Apr 2017 15:18:45 -0000 [ https://issues.apache.org/jira/browse/FLINK-6215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Kostas Kloudas reassigned FLINK-6215: ------------------------------------- Assignee: Kostas Kloudas > Make the StatefulSequenceSource scalable. > ----------------------------------------- > > Key: FLINK-6215 > URL: https://issues.apache.org/jira/browse/FLINK-6215 > Project: Flink > Issue Type: Bug > Components: DataStream API > Affects Versions: 1.3.0 > Reporter: Kostas Kloudas > Assignee: Kostas Kloudas > Fix For: 1.3.0 > > > Currently the {{StatefulSequenceSource}} instantiates all the elements to emit first and keeps them in memory. This is not scalable as for large sequences of elements this can lead to out of memory exceptions. > To solve this, we can pre-partition the sequence of elements based on the {{maxParallelism}} parameter, and just keep state (to checkpoint) per such partition. -- This message was sent by Atlassian JIRA (v6.3.15#6346)