Return-Path: 
 <yarn-dev-return-8226-apmail-hadoop-yarn-dev-archive=hadoop.apache.org@hadoop.apache.org>
X-Original-To: apmail-hadoop-yarn-dev-archive@minotaur.apache.org
Delivered-To: apmail-hadoop-yarn-dev-archive@minotaur.apache.org
Received: from mail.apache.org (hermes.apache.org [140.211.11.3])
	by minotaur.apache.org (Postfix) with SMTP id D094C1189D
	for <apmail-hadoop-yarn-dev-archive@minotaur.apache.org>;
 Mon, 23 Jun 2014 20:54:28 +0000 (UTC)
Received: (qmail 49895 invoked by uid 500); 23 Jun 2014 20:54:21 -0000
Delivered-To: apmail-hadoop-yarn-dev-archive@hadoop.apache.org
Received: (qmail 49731 invoked by uid 500); 23 Jun 2014 20:54:21 -0000
Mailing-List: contact yarn-dev-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
List-Help: <mailto:yarn-dev-help@hadoop.apache.org>
List-Unsubscribe: <mailto:yarn-dev-unsubscribe@hadoop.apache.org>
List-Post: <mailto:yarn-dev@hadoop.apache.org>
List-Id: <yarn-dev.hadoop.apache.org>
Reply-To: yarn-dev@hadoop.apache.org
Delivered-To: mailing list yarn-dev@hadoop.apache.org
Received: (qmail 49717 invoked by uid 99); 23 Jun 2014 20:54:21 -0000
Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136)
    by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 23 Jun 2014 20:54:21 +0000
X-ASF-Spam-Status: No, hits=1.5 required=5.0
	tests=HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS
X-Spam-Check-By: apache.org
Received-SPF: pass (athena.apache.org: domain of sanjay@hortonworks.com
 designates 209.85.220.47 as permitted sender)
Received: from [209.85.220.47] (HELO mail-pa0-f47.google.com) (209.85.220.47)
    by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 23 Jun 2014 20:54:16 +0000
Received: by mail-pa0-f47.google.com with SMTP id kq14so6295867pab.6
        for <yarn-dev@hadoop.apache.org>;
 Mon, 23 Jun 2014 13:53:55 -0700 (PDT)
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=1e100.net; s=20130820;
        h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc
         :message-id:references:to:content-type;
        bh=7syfO2t5g1M8ASOfb6iggHSDJsO7ByZlPGfDXriRouY=;
        b=ExqJdOlh2+QNPYCv3c2rrguaSmFmWVbaefMJsyX5dAeKv8Cx5my2VCpO2FVObOfQom
         F7N70dmBK7EwwV++kvAZwtMJtHwUQjRNR0jL2tIA/xPos3lAhxXIZ3tJ43jfPbnihv4g
         ucXTHzxP3VLpZrOwB3Z4Z7yg1IQE5fxCQ8o93FZQ8vXBm6aslz849AzeLynq0vCpYHVJ
         vlPiz/yiu8nzMlfT2a+70qs7I2Lq2FITu1SptSB+s/lag/cNd4mijNQ+EG7eysSSzAIX
         djvTB1waUpvaEsZXN38oDRkWGLBghmWRrJHgwXCARbMjnoNi9DY/ApDPML2UxhKpq/nn
         18GQ==
X-Gm-Message-State: 
 ALoCoQll0/QVRzIZNoIMCA76xd6sictBvZjtzcR/Rm0LOYYEQoHruG3TlToxY7KCtYQ7MYljmSNi5SRn+0QCi9dAsSx3DqN1wfo+JBIKJjfuaobNjyn/y4A=
X-Received: by 10.66.122.208 with SMTP id lu16mr31849480pab.129.1403556835585;
        Mon, 23 Jun 2014 13:53:55 -0700 (PDT)
Received: from [10.11.3.144] ([192.175.27.2])
        by mx.google.com with ESMTPSA id
 av2sm28397372pbc.16.2014.06.23.13.53.54
        for <multiple recipients>
        (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128);
        Mon, 23 Jun 2014 13:53:55 -0700 (PDT)
Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.2\))
Subject: Re: Plans of moving towards JDK7 in trunk
From: sanjay Radia <sanjay@hortonworks.com>
In-Reply-To: 
 <CAGB5D2anDbjNcvn0u2nU9gK_ZyKoWCkZGGL5AtBAr3x0Woyg=Q@mail.gmail.com>
Date: Mon, 23 Jun 2014 13:53:53 -0700
Cc: "common-dev@hadoop.apache.org" <common-dev@hadoop.apache.org>,
 "mapreduce-dev@hadoop.apache.org" <mapreduce-dev@hadoop.apache.org>,
 "yarn-dev@hadoop.apache.org" <yarn-dev@hadoop.apache.org>
Message-Id: <FE8810EB-40FE-4099-8336-CF805E709DEF@hortonworks.com>
References: 
 <CABbyifM02nMVaRpARPqnSeJ8gb5x9WTTy8c18tAfr6Z4tQLy2g@mail.gmail.com>
 <CAJs-t7O2V7EuNeMt0hJN2T8aEUJHgnfTDUaBkJVUFui3ca=Npg@mail.gmail.com>
 <CABbyifOGA=c1Ytgx6=iAr-22W7zSXa1DdV1jTVX5BHg+gXe61w@mail.gmail.com>
 <CA+qbEUMJtkmfoAY1xfWKkKF-Y0FkR6_dybyN5E0+=amYA7WDcg@mail.gmail.com>
 <CA+4kjVuaByNWshmiYFcA64dvcR3TvxKaUNyJdTnAw6yuqdpdCA@mail.gmail.com>
 <CAO0ccOdEnBH_WFWnE9K=Dg7XYa4Ar0yF7nZe8dG1U6_Em8hNfg@mail.gmail.com>
 <CAPn_vTuHpDrWySH-i1-FxGbYg7d8m-yw14p2T7_ik=ZWa5Keag@mail.gmail.com>
 <92FD1DEAAC387041B70D5237A1BE3A1D0CFC835813@MX33A.corp.emc.com>
 <CAPn_vTs8-mERm2HNO=ZRH9acp=SS-Ax_yh=1SpCPGidNLptkhg@mail.gmail.com>
 <CALwhT95HxQ-n83yvM8FdTnoH4zzaEnu8HkpY2ko98k65H7jb4Q@mail.gmail.com>
 <CACBYxKKBv4e1P=YSOX1oEJYRx9yEiDs6Z0zWGSWfEuM3TFohiQ@mail.gmail.com>
 <CAO0ccOcB3UU9UPOS5T=pi-Yr8PO4iNAh76rBFq7JSnOCCwad0Q@mail.gmail.com>
 <CAAD07O+GwuybeCoLZc3fHbfWE4N3_QQPj3cwmpQ4=1RiAhF0kg@mail.gmail.com>
 <CAO0ccOc0VronqLfYfSVBDZ5M8rFZVW2Buc=P5mBBn4u6pDLG-A@mail.gmail.com>
 <CA+qbEUPXoK_hJRKVpEy_dFLdDkeTOtSz=1WBqkzkOjsdVK=YEQ@mail.gmail.com>
 <CA+RK=_BRi2pKN2VDFhsHa4aSz6ZHSSL1zr9dDF0gAxVSsZ5opQ@mail.gmail.com>
 <CA+4kjVsUJ_Ru88JpnLOch-JqGUSrSeH7Y89aLS+qvvz=nbo4qA@mail.gmail.com>
 <CAGB5D2Zr8fTvXW-3osLUjmhL822Ur9f37nXqXTNXTpwRDGKC1Q@mail.gmail.com>
 <CA+4kjVuW2cy-hL2POm2FY=mxm8hVnRQ2sK8N601ajKRFp8LkVA@mail.gmail.com>
 <CAGB5D2b_DUzeG0x2EJNYSO7Jt5BntvGrwER276sXz6tuw4+emw@mail.gmail.com>
 <92FD1DEAAC387041B70D5237A1BE3A1D0CFF46A2AD@MX33A.corp.emc.com>
 <CACBYxK+-ZDVJPrvTs3D-JRkV7WJOO_ZkNnZgyGidcCPGagcq9Q@mail.gmail.com>
 <CA+qbEUNgTc2yJqpNu=0yp3ytL6-Z7mBmk5YzkPqi8sYWKR3avg@mail.gmail.com>
 <CA+RK=_BZ=1c2E0zuy5stf_qLY_JXk-_LTUGWNBvoM-fUpH1V_A@mail.gmail.com>
 <CA+qbEUPX68XCdBk+QF=7Hs1Ay-NGR7sLsyNPPgmNkK4wO_ZAeg@mail.gmail.com>
 <CA+qbEUPqdj61uLJscPYSFMscmroySw0GYWxgP44itWFY4Ph7hg@mail.gmail.com>
 <CANZDn9vpfggg3jP4uWNw7RJhJQXurFXyN0oB6G96MawWxm9Fzg@mail.gmail.com>
 <CAGB5D2aO2bzJ5Y7wXOyNk1dtPnKfiga3Anq16jq1SaDnVtbzVg@mail.gmail.com>
 <CA+4kjVtTo84P8mDLHvd2ctwwDC0ZSvmE63UMmTem-iSucL7nGg@mail.gmail.com>
 <CA+4kjVv-G6vYPoqEHLADT20GyTT9M+7gRg3y4TCXcx9FSvne8w@mail.gmail.com>
 <CA+4kjVtv1d_dEfimTEC4KWJiusJa0fbA4JfTJ39qeYNWO7K+UA@mail.gmail.com>
 <6920344D-A57A-4DCF-98D2-C9C743D47270@hortonworks.com>
 <CAGB5D2anDbjNcvn0u2nU9gK_ZyKoWCkZGGL5AtBAr3x0Woyg=Q@mail.gmail.com>
To: hdfs-dev <hdfs-dev@hadoop.apache.org>
X-Mailer: Apple Mail (2.1878.2)
Content-Type: multipart/alternative;
 boundary="Apple-Mail=_8070E993-9ED9-488A-85C8-E3103E47EECB"
X-Virus-Checked: Checked by ClamAV on apache.org

--Apple-Mail=_8070E993-9ED9-488A-85C8-E3103E47EECB
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain; charset=ISO-8859-1


On Jun 21, 2014, at 8:01 AM, Andrew Wang <andrew.wang@cloudera.com> wrote:

> This is why I'd like to keep my original proposal on the table: keep goin=
g
> with branch-2 in the near term, while working towards a JDK8-based Hadoop=
 3
> by April next year. It doesn't need to be a big bang release either. I'd =
be
> delighted if we could rolling upgrade from one to the other. I just didn'=
t
> want to rule out the inclusion of some very compelling feature outright.
> Trust me though, I'd be the first person to ask about compatibility if su=
ch
> a feature does come up.


Given your above statement  on compatibility (such as rolling upgrades),  i=
t should be fine for the JDK8-based-Hadoop-release to not be 3.0 and instea=
d merely be 2.x? Or do you have any incompatible changes to Hadoop protocol=
 or APIs in mind during the same time period?

sanjay
--=20
CONFIDENTIALITY NOTICE
NOTICE: This message is intended for the use of the individual or entity to=
=20
which it is addressed and may contain information that is confidential,=20
privileged and exempt from disclosure under applicable law. If the reader=
=20
of this message is not the intended recipient, you are hereby notified that=
=20
any printing, copying, dissemination, distribution, disclosure or=20
forwarding of this communication is strictly prohibited. If you have=20
received this communication in error, please contact the sender immediately=
=20
and delete it from your system. Thank You.

--Apple-Mail=_8070E993-9ED9-488A-85C8-E3103E47EECB--