Return-Path: <common-issues-return-111798-archive-asf-public=cust-asf.ponee.io@hadoop.apache.org>
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 1FC33200B11
	for <archive-asf-public-internal@cust-asf2.ponee.io>; Mon, 13 Jun 2016 17:24:27 +0200 (CEST)
Received: by cust-asf.ponee.io (Postfix)
	id 1E9F3160A62; Mon, 13 Jun 2016 15:24:27 +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 9255A160A3C
	for <archive-asf-public@cust-asf.ponee.io>; Mon, 13 Jun 2016 17:24:22 +0200 (CEST)
Received: (qmail 11363 invoked by uid 500); 13 Jun 2016 15:24:21 -0000
Mailing-List: contact common-issues-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
List-Help: <mailto:common-issues-help@hadoop.apache.org>
List-Unsubscribe: <mailto:common-issues-unsubscribe@hadoop.apache.org>
List-Post: <mailto:common-issues@hadoop.apache.org>
List-Id: <common-issues.hadoop.apache.org>
Delivered-To: mailing list common-issues@hadoop.apache.org
Received: (qmail 11326 invoked by uid 99); 13 Jun 2016 15:24:21 -0000
Received: from arcas.apache.org (HELO arcas) (140.211.11.28)
    by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 13 Jun 2016 15:24:21 +0000
Received: from arcas.apache.org (localhost [127.0.0.1])
	by arcas (Postfix) with ESMTP id 6194F2C1F7D
	for <common-issues@hadoop.apache.org>; Mon, 13 Jun 2016 15:24:21 +0000 (UTC)
Date: Mon, 13 Jun 2016 15:24:21 +0000 (UTC)
From: "Steve Loughran (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Message-ID: <JIRA.12948609.1457570806000.71059.1465831461397@Atlassian.JIRA>
In-Reply-To: <JIRA.12948609.1457570806000@Atlassian.JIRA>
References: <JIRA.12948609.1457570806000@Atlassian.JIRA> <JIRA.12948609.1457570806632@arcas>
Subject: [jira] [Commented] (HADOOP-12910) Add new FileSystem API to support
 asynchronous method calls
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394
archived-at: Mon, 13 Jun 2016 15:24:27 -0000


    [ https://issues.apache.org/jira/browse/HADOOP-12910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15327602#comment-15327602 ] 

Steve Loughran commented on HADOOP-12910:
-----------------------------------------

I believe the reason for branch-2 is that it gives hive an immediate speedup in some operations. This isn't end-user code; while it'll have to be reworked for any branch 3 release, that's something the Hive team will have to recognise.

> You need to change your architecture to SEDA or TPC if you want to write real high performance asynchronous program.

Noted. SEDA I've heard of. TPC? what's that?

> Add new FileSystem API to support asynchronous method calls
> -----------------------------------------------------------
>
>                 Key: HADOOP-12910
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12910
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: fs
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Xiaobing Zhou
>         Attachments: HADOOP-12910-HDFS-9924.000.patch, HADOOP-12910-HDFS-9924.001.patch, HADOOP-12910-HDFS-9924.002.patch
>
>
> Add a new API, namely FutureFileSystem (or AsynchronousFileSystem, if it is a better name).  All the APIs in FutureFileSystem are the same as FileSystem except that the return type is wrapped by Future, e.g.
> {code}
>   //FileSystem
>   public boolean rename(Path src, Path dst) throws IOException;
>   //FutureFileSystem
>   public Future<Boolean> rename(Path src, Path dst) throws IOException;
> {code}
> Note that FutureFileSystem does not extend FileSystem.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: common-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: common-issues-help@hadoop.apache.org