Return-Path: X-Original-To: apmail-hadoop-user-archive@minotaur.apache.org Delivered-To: apmail-hadoop-user-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 07145DA8D for ; Tue, 14 May 2013 07:23:55 +0000 (UTC) Received: (qmail 56224 invoked by uid 500); 14 May 2013 07:23:50 -0000 Delivered-To: apmail-hadoop-user-archive@hadoop.apache.org Received: (qmail 55785 invoked by uid 500); 14 May 2013 07:23:49 -0000 Mailing-List: contact user-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@hadoop.apache.org Delivered-To: mailing list user@hadoop.apache.org Received: (qmail 55771 invoked by uid 99); 14 May 2013 07:23:49 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 14 May 2013 07:23:49 +0000 X-ASF-Spam-Status: No, hits=1.7 required=5.0 tests=FREEMAIL_ENVFROM_END_DIGIT,HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of nitinpawar432@gmail.com designates 209.85.215.46 as permitted sender) Received: from [209.85.215.46] (HELO mail-la0-f46.google.com) (209.85.215.46) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 14 May 2013 07:23:45 +0000 Received: by mail-la0-f46.google.com with SMTP id fk20so186892lab.19 for ; Tue, 14 May 2013 00:23:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:content-type; bh=t3IZ8jsC7WXkR4gaVM+42HUbXNv2W2BzunRmihur5fw=; b=rkB2MYFJFuoiVdWzi5s3DoRVVdsc4nQxNFN2slv+zc2OSfIrncP4+XR4rEXb/mZwmT egBzGwfoCVpxb5qWrRk3N5lys4iLqB/kIm0iClQjG2N5rzt2vofcrI2NakZrCVPrjy9z 5BvCFH7wqOrdH5dOjOQiyDFxCMDAbowzkKG/V3cFjtr7LhyWPNFJWiyaFCN0oRuQISIG gFTx0nZzIgtXdJhO5R68KZH06RHo1O8QFSQymffqTOQ1RPuShi5avSaV3Jma8suLQciO lpeRQPZgR1/Rx2ULXzn9kKxboJhU1CB5l60mKPqF9lLMbgdmgBMWynkrX/OWnZsmVLAv 0Qvw== MIME-Version: 1.0 X-Received: by 10.112.154.170 with SMTP id vp10mr14295519lbb.10.1368516203482; Tue, 14 May 2013 00:23:23 -0700 (PDT) Received: by 10.114.95.42 with HTTP; Tue, 14 May 2013 00:23:23 -0700 (PDT) In-Reply-To: References: Date: Tue, 14 May 2013 12:53:23 +0530 Message-ID: Subject: Re: Read namenode data from primary memory From: Nitin Pawar To: user@hadoop.apache.org Content-Type: multipart/alternative; boundary=089e01161a442d950304dca88286 X-Virus-Checked: Checked by ClamAV on apache.org --089e01161a442d950304dca88286 Content-Type: text/plain; charset=ISO-8859-1 every 5 minutes seems too much. why not do a daily or say 8 hours basis On Tue, May 14, 2013 at 12:51 PM, Sandeep Nemuri wrote: > I Agree with you Nitin .. > My Requirement is i want to copy the edits and fsimage from memory for > every 5mins. How does this works ? > > > On Tue, May 14, 2013 at 12:31 PM, Nitin Pawar wrote: > >> if you do not put namenode in safemode that means your namenode can still >> accept request to write or delete files from hdfs. This may cause your >> snapshot to be a problematic in case you want to restore from it. Safemode >> is just an ensuring point that you have a standstill image to snapshot. >> >> >> >> >> On Tue, May 14, 2013 at 12:27 PM, Sandeep Nemuri wrote: >> >>> Withuot going to safemode can't we get the Namespace ?? >>> >>> >>> On Tue, May 14, 2013 at 12:18 PM, Ling Kun wrote: >>> >>>> Hi Aditya: >>>> This command line may help you: >>>> >>>> hadoop dfsadmin --saveNamespace >>>> >>>> you should firstly perform it in safe mode. >>>> >>>> The corresponding design and implementation is described here: >>>> https://issues.apache.org/jira/browse/HADOOP-4826 >>>> >>>> >>>> yours, >>>> Ling Kun >>>> >>>> >>>> >>>> On Tue, May 14, 2013 at 2:37 PM, Aditya exalter < >>>> adityaexalter@gmail.com> wrote: >>>> >>>>> Hi, >>>>> >>>>> How to get the namenode data(edits and fsimage) from the main >>>>> memory(RAM) >>>>> >>>>> >>>>> >>>>> >>>>> >>>> >>>> >>>> -- >>>> http://www.lingcc.com >>>> >>> >>> >>> >>> -- >>> --Regards >>> Sandeep Nemuri >>> >> >> >> >> -- >> Nitin Pawar >> > > > > -- > --Regards > Sandeep Nemuri > -- Nitin Pawar --089e01161a442d950304dca88286 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
every 5 minutes seems too much.=A0

why = not do a daily or say 8 hours basis
<= br>
On Tue, May 14, 2013 at 12:51 PM, Sandeep= Nemuri <nhsandeep6@gmail.com> wrote:
I Agree with you Nitin ..My Requirement is i want to copy the edits and fsimage from memory for e= very 5mins. How does this works ?=A0


On Tue, May 14, 2013 at 12:31 PM, Nitin Pawar <nitinpawar432@gmail.c= om> wrote:
if you do not put namenode in safemode that means your nam= enode can still accept request to write or delete files from hdfs. This may= cause your snapshot to be a problematic in case you want to restore from i= t. Safemode is just an ensuring point that you have a standstill image to s= napshot.=A0



On Tue, May 14, 2013 at 12:27 PM, Sandeep Nemur= i <nhsandeep6@gmail.com> wrote:
Withuot going to safemode c= an't we get the Namespace ??=A0


On Tue, May 14, 2013 at 12:18 PM, Ling K= un <lkun.erlv@gmail.com> wrote:
Hi Aditya:
=A0 =A0This = command line may help you:

=A0 =A0 =A0hadoop dfsad= min --saveNamespace=A0

=A0 =A0 =A0you should firstly perform it in safe mode.<= /div>
=A0
=A0 =A0 The corresponding design and implementation is d= escribed here: =A0=A0https://issues.apache.org/jira/browse/HADOOP-4826=


yours,
Ling Kun



O= n Tue, May 14, 2013 at 2:37 PM, Aditya exalter <adityaexalter@gmail.= com> wrote:
Hi,

=A0 = =A0 =A0How to get the namenode data(edits and fsimage) from the main memory= (RAM)







--
http://www.lingcc.com



<= font color=3D"#888888">--
--Regards
=A0 Sandeep Ne= muri



<= font color=3D"#888888">--
Nitin Pawar



--
--Regards=A0 Sandeep Nemuri


--
Nitin Pawar<= br> --089e01161a442d950304dca88286--