From issues-return-146299-archive-asf-public=cust-asf.ponee.io@flink.apache.org Fri Jan 5 15:03:08 2018 Return-Path: X-Original-To: archive-asf-public@eu.ponee.io Delivered-To: archive-asf-public@eu.ponee.io Received: from cust-asf.ponee.io (cust-asf.ponee.io [163.172.22.183]) by mx-eu-01.ponee.io (Postfix) with ESMTP id 1B7F418077D for ; Fri, 5 Jan 2018 15:03:08 +0100 (CET) Received: by cust-asf.ponee.io (Postfix) id 0C432160C3B; Fri, 5 Jan 2018 14:03:08 +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 5E1A6160C3C for ; Fri, 5 Jan 2018 15:03:07 +0100 (CET) Received: (qmail 34655 invoked by uid 500); 5 Jan 2018 14:03:06 -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 34556 invoked by uid 99); 5 Jan 2018 14:03:06 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd3-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 05 Jan 2018 14:03:06 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd3-us-west.apache.org (ASF Mail Server at spamd3-us-west.apache.org) with ESMTP id 208541807A9 for ; Fri, 5 Jan 2018 14:03:06 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd3-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -108.711 X-Spam-Level: X-Spam-Status: No, score=-108.711 tagged_above=-999 required=6.31 tests=[ENV_AND_HDR_SPF_MATCH=-0.5, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, 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 (spamd3-us-west.apache.org [10.40.0.10]) (amavisd-new, port 10024) with ESMTP id QhVmhGzHaqio for ; Fri, 5 Jan 2018 14:03:05 +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 042725F1BA for ; Fri, 5 Jan 2018 14:03:05 +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 4D9DFE25DF for ; Fri, 5 Jan 2018 14:03:03 +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 1ABC02475E for ; Fri, 5 Jan 2018 14:03:01 +0000 (UTC) Date: Fri, 5 Jan 2018 14:03:01 +0000 (UTC) From: "ASF GitHub Bot (JIRA)" To: issues@flink.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (FLINK-8360) Implement task-local state recovery 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/FLINK-8360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16313150#comment-16313150 ] ASF GitHub Bot commented on FLINK-8360: --------------------------------------- Github user pnowojski commented on a diff in the pull request: https://github.com/apache/flink/pull/5239#discussion_r159865241 --- Diff: flink-core/src/main/java/org/apache/flink/util/CloseableIterable.java --- @@ -0,0 +1,52 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.flink.util; + +import java.io.Closeable; +import java.io.IOException; +import java.util.Collections; +import java.util.Iterator; + +/** + * This interface represents an iterable that is also closeable. + * + * @param type of the iterated objects. + */ +public interface CloseableIterable extends Iterable, Closeable { --- End diff -- Couldn't you use `Stream` for that? > Implement task-local state recovery > ----------------------------------- > > Key: FLINK-8360 > URL: https://issues.apache.org/jira/browse/FLINK-8360 > Project: Flink > Issue Type: New Feature > Components: State Backends, Checkpointing > Reporter: Stefan Richter > Assignee: Stefan Richter > Fix For: 1.5.0 > > > This issue tracks the development of recovery from task-local state. The main idea is to have a secondary, local copy of the checkpointed state, while there is still a primary copy in DFS that we report to the checkpoint coordinator. > Recovery can attempt to restore from the secondary local copy, if available, to save network bandwidth. This requires that the assignment from tasks to slots is as sticky is possible. > For starters, we will implement this feature for all managed keyed states and can easily enhance it to all other state types (e.g. operator state) later. -- This message was sent by Atlassian JIRA (v6.4.14#64029)