From user-return-33895-apmail-cassandra-user-archive=cassandra.apache.org@cassandra.apache.org Fri May 3 15:25:40 2013 Return-Path: X-Original-To: apmail-cassandra-user-archive@www.apache.org Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 1644EF5EE for ; Fri, 3 May 2013 15:25:40 +0000 (UTC) Received: (qmail 12951 invoked by uid 500); 3 May 2013 15:25:37 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 12890 invoked by uid 500); 3 May 2013 15:25:37 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 12880 invoked by uid 99); 3 May 2013 15:25:37 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 03 May 2013 15:25:37 +0000 X-ASF-Spam-Status: No, hits=2.2 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_PASS,UNPARSEABLE_RELAY X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of cscetbon.ext@orange.com designates 193.251.215.92 as permitted sender) Received: from [193.251.215.92] (HELO relais-inet.francetelecom.com) (193.251.215.92) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 03 May 2013 15:25:30 +0000 Received: from omfedm07.si.francetelecom.fr (unknown [xx.xx.xx.3]) by omfedm09.si.francetelecom.fr (ESMTP service) with ESMTP id 48F4B2DC3F4 for ; Fri, 3 May 2013 17:25:10 +0200 (CEST) Received: from PUEXCH11.nanterre.francetelecom.fr (unknown [10.101.44.27]) by omfedm07.si.francetelecom.fr (ESMTP service) with ESMTP id 2DB3B4C06F for ; Fri, 3 May 2013 17:25:10 +0200 (CEST) Received: from PUEXCB2E.nanterre.francetelecom.fr ([10.101.44.54]) by PUEXCH11.nanterre.francetelecom.fr ([10.101.44.27]) with mapi; Fri, 3 May 2013 17:25:09 +0200 From: To: "user@cassandra.apache.org" Date: Fri, 3 May 2013 17:24:33 +0200 Subject: Hadoop jobs and data locality Thread-Topic: Hadoop jobs and data locality Thread-Index: Ac5IEmXCqhzYQ3k8QbuqNoRu46AXtg== Message-ID: <28783_1367594710_5183D6D6_28783_1472_1_4E7F1A91-4033-4B86-B59F-94E124C39E18@orange.com> Accept-Language: fr-FR Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: fr-FR Content-Type: multipart/alternative; boundary="_000_4E7F1A9140334B86B59F94E124C39E18orangecom_" MIME-Version: 1.0 X-PMX-Version: 5.6.1.2065439, Antispam-Engine: 2.7.2.376379, Antispam-Data: 2013.5.2.60325 X-Virus-Checked: Checked by ClamAV on apache.org --_000_4E7F1A9140334B86B59F94E124C39E18orangecom_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi, I'm using Pig to calculate the sum of a columns from a columnfamily (scan o= f all rows) and I've read that input data locality is supported at http://w= iki.apache.org/cassandra/HadoopSupport However when I execute my Pig script Hadoop assigns only one mapper to the = task and not one mapper on each node (replication factor =3D 1). FYI, I've= 8 mappers available (2 per node). Is there anything that can disable the data locality feature ? Thanks -- Cyril SCETBON ___________________________________________________________________________= ______________________________________________ Ce message et ses pieces jointes peuvent contenir des informations confiden= tielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu= ce message par erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les pieces jointes. Les messages el= ectroniques etant susceptibles d'alteration, France Telecom - Orange decline toute responsabilite si ce message a ete al= tere, deforme ou falsifie. Merci. This message and its attachments may contain confidential or privileged inf= ormation that may be protected by law; they should not be distributed, used or copied without authorisation. If you have received this email in error, please notify the sender and dele= te this message and its attachments. As emails may be altered, France Telecom - Orange is not liable for message= s that have been modified, changed or falsified. Thank you. --_000_4E7F1A9140334B86B59F94E124C39E18orangecom_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi,

I'= m using Pig to calculate the sum of a columns from a columnfamily (scan of = all rows) and I've read that input data locality is supported at http://wiki.apache.or= g/cassandra/HadoopSupport
However when I execute my Pig scrip= t Hadoop assigns only one mapper to the task and not one mapper on each nod= e (replication factor =3D 1).  FYI, I've 8 mappers available (2 per no= de).
Is there anything that can disable the data locality feature= ? 

Thanks
-- 
<= div class=3D"" style=3D"color: rgb(0, 0, 0); font-family: Helvetica; font-s= ize: medium; font-style: normal; font-variant: normal; font-weight: normal;= letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webk= it-auto; text-indent: 0px; text-transform: none; white-space: normal; widow= s: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-strok= e-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line= -break: after-white-space; ">Cyril SCETBON

____________________________________________________________=
_____________________________________________________________

Ce message et ses pieces jointes peuvent contenir des informations confiden=
tielles ou privilegiees et ne doivent donc
pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu=
 ce message par erreur, veuillez le signaler
a l'expediteur et le detruire ainsi que les pieces jointes. Les messages el=
ectroniques etant susceptibles d'alteration,
France Telecom - Orange decline toute responsabilite si ce message a ete al=
tere, deforme ou falsifie. Merci.

This message and its attachments may contain confidential or privileged inf=
ormation that may be protected by law;
they should not be distributed, used or copied without authorisation.
If you have received this email in error, please notify the sender and dele=
te this message and its attachments.
As emails may be altered, France Telecom - Orange is not liable for message=
s that have been modified, changed or falsified.
Thank you.
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