Return-Path: X-Original-To: apmail-hadoop-common-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-common-issues-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id DDF3917590 for ; Fri, 31 Oct 2014 19:45:34 +0000 (UTC) Received: (qmail 77861 invoked by uid 500); 31 Oct 2014 19:45:34 -0000 Delivered-To: apmail-hadoop-common-issues-archive@hadoop.apache.org Received: (qmail 77820 invoked by uid 500); 31 Oct 2014 19:45:34 -0000 Mailing-List: contact common-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: common-issues@hadoop.apache.org Delivered-To: mailing list common-issues@hadoop.apache.org Received: (qmail 77808 invoked by uid 99); 31 Oct 2014 19:45:34 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 31 Oct 2014 19:45:34 +0000 Date: Fri, 31 Oct 2014 19:45:34 +0000 (UTC) From: "Colin Patrick McCabe (JIRA)" To: common-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HADOOP-10987) Provide an iterator-based listing API for FileSystem 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-10987?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Colin Patrick McCabe updated HADOOP-10987: ------------------------------------------ Affects Version/s: 2.7.0 Status: Patch Available (was: Open) > Provide an iterator-based listing API for FileSystem > ---------------------------------------------------- > > Key: HADOOP-10987 > URL: https://issues.apache.org/jira/browse/HADOOP-10987 > Project: Hadoop Common > Issue Type: Improvement > Affects Versions: 2.7.0 > Reporter: Kihwal Lee > Assignee: Kihwal Lee > Attachments: HADOOP-10987.patch, HADOOP-10987.v2.patch, HADOOP-10987.v3.patch, HADOOP-10987.v4.branch-2.patch, HADOOP-10987.v4.patch, HADOOP-10987.v4_with_comment_fix.branch-2.patch, HADOOP-10987.v4_with_comment_fix.patch > > > Iterator based listing methods already exist in {{FileContext}} for both simple listing and listing with locations. However, {{FileSystem}} lacks the former. From what I understand, it wasn't added to {{FileSystem}} because it was believed to be phased out soon. Since {{FileSystem}} is very well alive today and new features are getting added frequently, I propose adding an iterator based {{listStatus}} method. As for the name of the new method, we can use the same name used in {{FileContext}} : {{listStatusIterator()}}. > It will be particularly useful when listing giant directories. Without this, the client has to build up a huge data structure and hold it in memory. We've seen client JVMs running out of memory because of this. > Once this change is made, we can modify FsShell, etc. in followup jiras. -- This message was sent by Atlassian JIRA (v6.3.4#6332)