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From Adam Berry <>
Subject [DISCUSS] [PROPOSAL] Hadoop Development Tools
Date Wed, 17 Oct 2012 20:01:45 GMT

Below is a proposal for a new incubator project. This idea came out of and had strong support
on the general hadoop list, see the thread at

We are looking for feedback, and to see who else would be interested in contributing to this
effort as a committer, as well as an additional mentor.

Adam Berry

Hadoop Development Tools Proposal

I’d like to propose the Hadoop Development Tools, a set of extensions to the Eclipse IDE
to support developing against Apache Hadoop technologies.

= HDT (Hadoop Development Tools) =

== Abstract ==
 Tools to support developing applications that use Apache Hadoop from within Eclipse.

== Proposal ==
 Hadoop Development Tools are a set of extensions to Eclipse providing support for creating,
launching and debugging distributed applications, as well as interacting with HDFS filesystems.
This work will build on the existing Map Reduce Tools present in the Apache Hadoop project.

== Background ==
 Map Reduce Tools have existed as part of contrib for Apache Hadoop. Unfortunately they are
source tied to a single version of Hadoop, and development has stalled, with little movement
past the Hadoop 0.20 line.

== Rationale ==
 Support for newer versions of Hadoop from within Eclipse is regularly raised on the Hadoop
mailing lists, so there is a clear need to drive these tools forward. Development tools generally
are worked on separate from the target tools/platform, separating the tools out will allow
for supporting multiple versions, so a developer could work with a heterogeneous environment.

== Initial Goals ==
 * Give the tools project a home of its own.
 * Port current MapReduce tools feature set to all current release lines of Hadoop in a single
Eclipse install.
 * Documentation and tutorials for all features.
 * Publish Eclipse update site, and join Eclipse marketplace listing.
 * Establish release cycle that combines support for Hadoop and Eclipse release cycles.
 * Look to build support for YARN, MRUnit and possibly other Hadoop-related projects.

== Current Status ==
The source for the current MapReduceTools lives in the contrib section of the Hadoop source.
In its current implementation it is tied to the version of Hadoop against which it is compiled.
The layout and API that it was developed with means that it can only be used with the 0.20
or 1.0 Hadoop releases, the new layout and YARN api introduced with the 0.23 and 2.0 lines
are not supported.

=== Meritocracy ===
Several people and companies have already expressed an interest in contributing to this project,
and we hope to attract additional interest during the proposal discussion. We plan to invest
and support a meritocracy that attracts, invites, and supports newcomers to build a vibrant
and  diverse community.

=== Community ===
The target community is developers who are working developing Map/Reduce applications against
Hadoop. Given the success of Hadoop the target group is likely to be quite large. Separation
from the Hadoop community would make it easier to support multiple versions of hadoop, as
well as merging the release cycles of Hadoop and Eclipse to provide predictable iteration
and improvement in the toolset.

=== Core Developers ===
The initial list of developers includes people experienced with developing against the Eclipse
 * Adam Berry (amberry at yahoo-inc dot com)
 * Jeffrey Zemerick (jeffrrey at mtnfog dot com)

=== Alignment ===
Hadoop Development Tools aligns with both Hadoop and Eclipse. Hadoop as the platform for the
development target, and Eclipse as the IDE platform used as the base for the tools.

== Known Risks ==

=== Orphaned Products ===

=== Inexperience with Open Source ===
Adam Berry has experience of the Eclipse open source community, and has been building familiarity
with the Apache processes through patches to the existing source.

=== Reliance on Salaried Developers ===
Hadoop Development Tools will be developed with a mix of salaried and volunteer time.

=== Relationships with Other Apache Projects ===
Hadoop Development Tools is closely related to Apache Hadoop.

=== An Excessive Fascination with the Apache Brand ===
 Given the success of Hadoop and associated projects, Apache is the natural place for the
Hadoop Development Tools. Chris Mattman suggested the Apache Incubator as appropriate on the
Hadoop general mailing list following the success that MRUnit had taking the path from Hadoop
contrib to an Apache top level project.

== Documentation ==
Documentation for the current tools can be found at

== Initial Source ==

==  Source and Intellectual Property Submission Plan ==
The source, and any suggested initial patches, are already hosted either in Apache’s Subversion
or JIRA.

==  External Dependencies ==
Eclipse Platform
Eclipse Java Development Tools

==  Cryptography ==
Hadoop Development Tools likely does not fall into this area.

==  Required Resources ==
=== Mailing lists ===
 * hdt-dev
 * hdt-commits
 * hdt-user

=== Subversion Directory ===

=== Issue Tracking ===
 * JIRA Hadoop Development Tools (HDT)

=== Other Resources ===
 * Jenkins/Hudson for builds and test running.

== Initial Committers ==
 * Adam Berry (amberry at yahoo-inc dot com)
 * Jeffrey Zemerick (jeffrrey at mtnfog dot com)

== Affiliations ==
 * Adam Berry - Yahoo!
 * Jeffrey Zemerick - Mountain Fog

== Sponsors ==
=== Champion ===
Chris Douglas

=== Nominated Mentors ===
Chris Douglas
Chris Mattman

=== Sponsoring Entity ===
Incubator PMC

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