Return-Path: X-Original-To: apmail-hadoop-mapreduce-user-archive@minotaur.apache.org Delivered-To: apmail-hadoop-mapreduce-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 985B6DD62 for ; Wed, 15 Aug 2012 04:49:55 +0000 (UTC) Received: (qmail 11345 invoked by uid 500); 15 Aug 2012 04:49:50 -0000 Delivered-To: apmail-hadoop-mapreduce-user-archive@hadoop.apache.org Received: (qmail 10951 invoked by uid 500); 15 Aug 2012 04:49:46 -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 10922 invoked by uid 99); 15 Aug 2012 04:49:45 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 15 Aug 2012 04:49:45 +0000 X-ASF-Spam-Status: No, hits=2.2 required=5.0 tests=FSL_RCVD_USER,HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_NEUTRAL X-Spam-Check-By: apache.org Received-SPF: neutral (nike.apache.org: local policy) Received: from [209.85.161.176] (HELO mail-gg0-f176.google.com) (209.85.161.176) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 15 Aug 2012 04:49:37 +0000 Received: by ggke5 with SMTP id e5so1712555ggk.35 for ; Tue, 14 Aug 2012 21:49:15 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=from:mime-version:content-type:subject:date:in-reply-to:to :references:message-id:x-mailer:x-gm-message-state; bh=TNamzq6tHNh8dUIEF4uD2QgtMVoXrdQwocqlQQBYf70=; b=iz9dRrRMmf/EZ0iyZXO/RNoTYZf00PwftYeuRWAfIOV+QLDO4ITs57slaXhWUqKgQ+ Xzu+k0PfnrTNtycqy5c+twAxRfdfmiZZ5MNvE/Y2w+klPc95rGnKYMpFE+TZT76XGVhv aTJ6hjQp0d74Q+2Th9wbWGKPWZzuprCr+HK/mp8K/DYTZ6OSetqAIaoGKnhdkPvZeb7n 3oih6zqhY2YHsr5uThogkNqTRxsH0E2/P6IJfopP368stKCf3Dvsq6D4a3A8xOm0lqlK lQCcAvzlCmc3d+N+LkTpD9x9izV2Zcr4cjbZGrQTwsdRulqxWbaFy3fNOSxh7kprDjRN IrYA== Received: by 10.50.158.164 with SMTP id wv4mr15766654igb.12.1345006155057; Tue, 14 Aug 2012 21:49:15 -0700 (PDT) Received: from [10.0.1.10] (c-98-234-189-94.hsd1.ca.comcast.net. [98.234.189.94]) by mx.google.com with ESMTPS id xm2sm1168969igb.3.2012.08.14.21.49.12 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 14 Aug 2012 21:49:14 -0700 (PDT) From: Arun C Murthy Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: multipart/alternative; boundary=Apple-Mail-352--520752718 Subject: Re: JSR 107 with Hadoop Date: Tue, 14 Aug 2012 21:49:10 -0700 In-Reply-To: To: user@hadoop.apache.org References: Message-Id: X-Mailer: Apple Mail (2.1084) X-Gm-Message-State: ALoCoQl3DoX57TZszBN82dzBT1lfqglC2TBsR/N1iGwGoXqcnjR6WEXS5/NOpryRl+NiJ64cMS8y --Apple-Mail-352--520752718 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Please open a jira, we can discuss there. thanks, Arun On Aug 14, 2012, at 2:22 PM, Dhruv wrote: > Have there been any attempts to integrate JSR 107 compliant caches on = mappers and reducers?=20 >=20 > There are some use cases where this will be beneficial, but I couldn't = find any suitable plugging points for a cache on mappers or reducers = without modifying the framework's code itself.=20 >=20 > I work for Terracotta Software, we have a JSR 107 wrapper for Ehcache = and were wondering if the community will be interested in accepting a = patch for such integration.=20 >=20 > Thanks, > -- > Dhruv >=20 -- Arun C. Murthy Hortonworks Inc. http://hortonworks.com/ --Apple-Mail-352--520752718 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii
Have there = been any attempts to integrate JSR 107 compliant caches on mappers and = reducers? 

There are some use cases where = this will be beneficial, but I couldn't find any suitable plugging = points for a cache on mappers or reducers without modifying the = framework's code itself. 

I work for Terracotta Software, we have a JSR = 107 wrapper for Ehcache and were wondering if the community will be = interested in accepting a patch for such = integration. 

Thanks,
--
Dhruv


--
Arun C. Murthy
Hortonworks Inc.
http://hortonworks.com/

=

= --Apple-Mail-352--520752718--