From common-issues-return-162484-archive-asf-public=cust-asf.ponee.io@hadoop.apache.org Thu Dec 20 19:29:13 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 9253A180648 for ; Thu, 20 Dec 2018 19:29:12 +0100 (CET) Received: (qmail 36105 invoked by uid 500); 20 Dec 2018 18:29:11 -0000 Mailing-List: contact common-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list common-issues@hadoop.apache.org Received: (qmail 36094 invoked by uid 99); 20 Dec 2018 18:29:11 -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; Thu, 20 Dec 2018 18:29:11 +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 21698C6D8B for ; Thu, 20 Dec 2018 18:29:11 +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-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 2Ux3eUqNw8In for ; Thu, 20 Dec 2018 18:29:09 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-eu.apache.org (ASF Mail Server at mx1-lw-eu.apache.org) with ESMTP id 4DFD160EAB for ; Thu, 20 Dec 2018 18:19:01 +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 7CDF7E00C9 for ; Thu, 20 Dec 2018 18:19:00 +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 374D823FEB for ; Thu, 20 Dec 2018 18:19:00 +0000 (UTC) Date: Thu, 20 Dec 2018 18:19:00 +0000 (UTC) From: "Steve Loughran (JIRA)" To: common-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HADOOP-15229) Add FileSystem builder-based openFile() API to match createFile() 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/HADOOP-15229?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16726106#comment-16726106 ] Steve Loughran commented on HADOOP-15229: ----------------------------------------- I haven't quite done a retest on this specific branch, but reviews still encouraged > Add FileSystem builder-based openFile() API to match createFile() > ----------------------------------------------------------------- > > Key: HADOOP-15229 > URL: https://issues.apache.org/jira/browse/HADOOP-15229 > Project: Hadoop Common > Issue Type: New Feature > Components: fs, fs/azure, fs/s3 > Affects Versions: 3.0.0 > Reporter: Steve Loughran > Assignee: Steve Loughran > Priority: Major > Attachments: HADOOP-15229-001.patch, HADOOP-15229-002.patch, HADOOP-15229-003.patch, HADOOP-15229-004.patch, HADOOP-15229-004.patch, HADOOP-15229-005.patch, HADOOP-15229-006.patch, HADOOP-15229-007.patch, HADOOP-15229-009.patch, HADOOP-15229-010.patch, HADOOP-15229-011.patch, HADOOP-15229-012.patch, HADOOP-15229-013.patch, HADOOP-15229-014.patch > > > Replicate HDFS-1170 and HADOOP-14365 with an API to open files. > A key requirement of this is not HDFS, it's to put in the fadvise policy for working with object stores, where getting the decision to do a full GET and TCP abort on seek vs smaller GETs is fundamentally different: the wrong option can cost you minutes. S3A and Azure both have adaptive policies now (first backward seek), but they still don't do it that well. > Columnar formats (ORC, Parquet) should be able to say "fs.input.fadvise" "random" as an option when they open files; I can imagine other options too. > The Builder model of [~eddyxu] is the one to mimic, method for method. Ideally with as much code reuse as possible -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscribe@hadoop.apache.org For additional commands, e-mail: common-issues-help@hadoop.apache.org