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Date: Mon, 11 Jan 2010 22:42:54 +0000 (UTC)
From: "Jeff Hammerbacher (JIRA)" <jira@apache.org>
To: avro-dev@hadoop.apache.org
Subject: [jira] Commented: (AVRO-163) Each language Avro supports should be
 a separate package
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    [ https://issues.apache.org/jira/browse/AVRO-163?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12798902#action_12798902 ] 

Jeff Hammerbacher commented on AVRO-163:
----------------------------------------

I think a top-level tutorial folder is better than a per-implementation tutorial. I only bring it up now as it's a directory layout issue. Sorry for holding up this change, we can debate a tutorial later.

> Each language Avro supports should be a separate package
> --------------------------------------------------------
>
>                 Key: AVRO-163
>                 URL: https://issues.apache.org/jira/browse/AVRO-163
>             Project: Avro
>          Issue Type: Improvement
>          Components: c, c++, java, python
>         Environment: We currently release Avro as a single monolithic tarball with ant being used to build all the languages that Avro supports.
>            Reporter: Matt Massie
>            Assignee: Doug Cutting
>            Priority: Critical
>             Fix For: 1.3.0
>
>         Attachments: AVRO-163-cpp.patch, AVRO-163.patch, AVRO-163.patch, AVRO-163.patch, AVRO-163.sh
>
>   Original Estimate: 8h
>  Remaining Estimate: 8h
>
> *Build Issue*
> While ant is used for building Java projects, it is almost never used to build python, c++ or c projects.  C and C++ projects are often managed using autotools while Python uses setuptools.  Forcing these languages to use a foreign build system ('ant') is suboptimal and will cause us headaches as we move forward.
> *Release issue*
> Releasing a single monolithic package forces users of one language to download binary and source for all languages.  For example, at this time the Avro C distribution is only 384K in size (built using autotools 'make distcheck' target).  People interested in using the C implementation would be forced to download a large monolithic tarball (currently 3.8 MB) that includes dozens of third-party jar files for the Java implementation.  Furthermore, C users would be forced to use 'ant' as the top-level build tool.  This monolithic approach would also prevent us from submitting Avro for inclusion in Linux distribution yum/apt repositories as RPM and Debian packages.  It's important to allow C/C++ code to have a pristine release tarball on which to base Debian and RPM packaging.
> *Solution*
> Create top-level directories: 'java', 'python', 'c++ ' , 'c', 'shared' and 'release'.  Each language directory would contain the source for that language and use the build system natural for that language, e.g. ant, autotools, setuptools, gem, etc.  The 'shared' directory would have, for example, common test schema and data files for interoperability testing between each language.  A simple top-level bash script would call into each language to build a release package, documentation, etc. into the 'release' directory.  Each Avro release would then be compromised of package(s) for each language Avro supports, e.g. avro-java-1.2.3.tar.gz, pyavro-1.2.3.tar.gz, avro-c++-1.2.3.tar.gz and avro-c-1.2.3.tar.gz.  Later on, we'll also likely have libavro-devel-1.2.3-1.x86_64.rpm too.

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