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 4729E200CFA for ; Tue, 5 Sep 2017 13:26:08 +0200 (CEST) Received: by cust-asf.ponee.io (Postfix) id 45E9316341E; Tue, 5 Sep 2017 11:26:08 +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 8D01E16341D for ; Tue, 5 Sep 2017 13:26:07 +0200 (CEST) Received: (qmail 40755 invoked by uid 500); 5 Sep 2017 11:26:06 -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 40743 invoked by uid 99); 5 Sep 2017 11:26:06 -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; Tue, 05 Sep 2017 11:26:06 +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 F0F4A182AAD for ; Tue, 5 Sep 2017 11:26:05 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd3-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 (spamd3-us-west.apache.org [10.40.0.10]) (amavisd-new, port 10024) with ESMTP id wgv0jLgLkzyo for ; Tue, 5 Sep 2017 11:26:01 +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 6654A5FB9F for ; Tue, 5 Sep 2017 11:26:01 +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 C6636E0C21 for ; Tue, 5 Sep 2017 11:26:00 +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 7534B2414B for ; Tue, 5 Sep 2017 11:26:00 +0000 (UTC) Date: Tue, 5 Sep 2017 11:26:00 +0000 (UTC) From: "Steve Loughran (JIRA)" To: common-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HADOOP-14747) S3AInputStream to implement CanUnbuffer MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Tue, 05 Sep 2017 11:26:08 -0000 [ https://issues.apache.org/jira/browse/HADOOP-14747?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16153495#comment-16153495 ] Steve Loughran commented on HADOOP-14747: ----------------------------------------- Should we stub this out in Hadoop 3.1 for s3a, wasb & ADL just to keep hbase happy? > S3AInputStream to implement CanUnbuffer > --------------------------------------- > > Key: HADOOP-14747 > URL: https://issues.apache.org/jira/browse/HADOOP-14747 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 > Affects Versions: 2.8.1 > Reporter: Steve Loughran > > HBase relies on FileSystems implementing {{CanUnbuffer.unbuffer()}} to force input streams to free up remote connections (HBASE-9393). This works for HDFS, but not elsewhere. > S3A input stream can implement {{CanUnbuffer.unbuffer()}} by closing the input stream and relying on lazy seek to reopen it on demand. > Needs > * Contract specification of unbuffer. As in "who added a new feature to filesystems but forgot to mention what it should do?" > * Contract test for filesystems which declare their support. > * S3AInputStream to call {{closeStream()}} on a call to {{unbuffer()}}. > * Test case -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscribe@hadoop.apache.org For additional commands, e-mail: common-issues-help@hadoop.apache.org