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From "Vasudevan, Ramkrishna S" <>
Subject RE: [VOTE] Accept Trafodion into Apache Incubator
Date Wed, 20 May 2015 03:50:11 GMT
+1 (non-binding)

-----Original Message-----
From: [] On Behalf Of Stack
Sent: Wednesday, May 20, 2015 2:58 AM
Subject: [VOTE] Accept Trafodion into Apache Incubator

Following the discussion earlier in the thread [1], I would like to call a VOTE to accept
Trafodion as a new Apache Incubator project.

The proposal is available on the wiki at [2] and is also attached to this mail.

The VOTE is open for at least the next 72 hours:

 [ ] +1 accept Trafodion into the Apache Incubator  [ ] ±0 Abstain  [ ] -1 because...

I am +1 (binding)

Thank you,


Trafodion Apache Incubator Proposal


Trafodion is a webscale SQL-on-Hadoop solution enabling transactional or operational workloads
on Hadoop.


Apache Trafodion builds on the scalability, elasticity, and flexibility of Hadoop. Trafodion
extends Hadoop to provide guaranteed transactional integrity, enabling new kinds of big data
applications to run on Hadoop. Key features of Apache Trafodion include:

* Full-functioned ANSI SQL language support
* JDBC/ODBC connectivity for Linux/Windows clients
* Distributed ACID transaction protection across multiple statements, tables and rows
* Performance improvements for OLTP workloads with compile-time and run-time optimizations
* Support for large data sets using a parallel-aware query optimizer
* ANSI SQL security and data integrity constraints including referential integrity

Hewlett-Packard Company submits this proposal to donate its Apache License, Version 2.0 open
source project known as Trafodion, its source code, documentation, and web site content to
the Apache Software Foundation in order to build an open source community


Trafodion is an open source project sponsored by HP, incubated at HP Labs and HP-IT, to develop
an enterprise-class SQL-on-Hadoop solution targeting big data transactional or operational
workloads. HP publically announced the open source project and uploaded the source code to
GitHub in June 2014.

The SQL compiler, optimizer and executor components of Trafodion have a rich heritage. Under
development since 1993, they were released as commercial closed source software in various
flavors such as HP NonStop SQL/MX and HP Neoview. NonStop SQL/MX was designed for online transaction
processing on HP’s NonStop (formerly Tandem) fault-tolerant servers and is known for its
high availability, scalability, and performance. Hundreds of companies and thousands of servers
are running mission-critical applications today on NonStop SQL/MX. In addition, much of these
components today are running internal to HP as the core of its Enterprise Data Warehouse (EDW),
managing over a PB of data.

Starting in 2013, the software was modified to run on HBase and a new distributed transaction
manager was written to run as an HBase co-processor.

Unlike most NOSQL and other SQL-on-Hadoop open source projects, Trafodion provides comprehensive
ANSI SQL language support including full-functioned data definition (DDL), data manipulation
(DML), transaction control (TCL) and database utility support.

Trafodion provides comprehensive and standard SQL data manipulation support including SELECT,
INSERT, UPDATE, DELETE, and UPSERT/MERGE syntax with language options including join variants,
unions, where predicates, aggregations (group by and having), sort ordering, sampling, correlated
and nested sub-queries, cursors, and many SQL functions.

Utilities are provided for updating table statistics used by the optimizer for costing (i.e.
selectivity/cardinality estimates) plan alternatives, for displaying the chosen SQL execution
plan, plan shaping, backup and restoring the database, data loading and unloading, and a command
line utility for interfacing with the database engine.

Explicit control statements are provided to allow applications to define transaction boundaries
and to abort transactions when warranted, including BEGIN WORK, COMMIT WORK, ROLLBACK WORK

Trafodion supports ANSI’s grant/revoke semantics to define user and role privileges in terms
of managing and accessing the database objects.


The name “Trafodion” (the Welsh word for transactions, pronounced
“Tra-vod-eee-on”) was chosen specifically to emphasize the differentiation that Trafodion
provides in closing a critical gap in the Hadoop ecosystem.
Trafodion builds on the scalability, elasticity, and flexibility of Hadoop.
Trafodion extends Hadoop to provide guaranteed transactional integrity, enabling new kinds
of big data applications to run on Hadoop.

Current Status

HP released the Trafodion code under the Apache License, Version 2, in June of 2014. Since
that time, we have had one major release in January 2015 and one minor release in April 2015.
The focus of these releases has been in getting our base functionality, including security,
working on top of Apache HBase, as well as improving performance, availability and scalability,
and integrating better with HBase.


We want to build a diverse developer community, based on the Apache Way, around Trafodion.
To help developers become contributors, we have documentation on the wiki about the architecture,
the source tree structure, and an example enhancement. We plan to publish our project backlog
to the community, specifically highlighting areas where developers new to Trafodion may best
start contributing, such as extending the database functionality with User Defined Routines
(UDRs) and integrating with other Apache projects in the Hadoop ecosystem.


We have already begun building a community but at this time the community consists only of
Trafodion developers – all HP employees – and prospective users. We have participated
in and hosted HBase Meetups and intend to ramp up our community building efforts.

The Trafodion project has seen interest in China, where HP has conducted proof-of-concepts
with multiple companies and expects to see some of its first commercial deployments. To help
recruit contributors and users in China, members of the team are translating Trafodion wiki
content into Mandarin.

Core Developers

The core developers are very experienced in database and transaction monitor technology, with
many having spent more than 20 years working in this space.


Apache Trafodion relies on Apache HBase as its storage engine. The development team has collaborated
with and gained valuable advice from working with the Apache HBase core developers. Apache
Trafodion has federation capabilities as well, and can query Trafodion tables stored in HBase,
native HBase tables, and Apache Hive tables.

Known Risks

Orphaned Products

HP Labs and HP-IT have been incubating Trafodion development for almost two years. This is
part of HP’s strategy to leverage its investment in database software and bring software
to market as open source and is similar to HP’s efforts with OpenStack. Trafodion builds
on HP’s equity investment in the Hadoop ecosystem and its efforts to monetize Hadoop through
hardware, software, and services. HP wants Trafodion to be successful, as HP will offer a
commercially supported distribution of Trafodion.

Inexperience with Open Source

We have been working with open source software in building closed source software for well
over two decades. To help transition to doing open source development, the development team
received guidance and best practices from HP developers working on OpenStack open source projects,
many of whom have experience working on Apache and other open source projects as well. Since
releasing Trafodion as an open source project in June of 2014, the committers and contributors
have moved forward using open source development processes and tools for bug tracking and
design blueprints and Jenkins for continuous integration. As part of the incubation process,
we recognize we may need to change some of our development processes/tools and conduct our
discussions using Apache email dlists.

Homogenous Developers

Since the initial development of Trafodion has been supported by HP, all of the current developers
are HP employees. Through the support of the Apache incubation project, we aim to expand the
list of developers and gain contributors from related SQL-on-Hadoop projects and the Apache
HBase project. Trafodion developers are experienced with distributed development processes,
being primarily based in Palo Alto, CA; Austin, TX; and Shanghai, China. Trafodion is written
in C++ and Java.

Reliance on Salaried Developers

Currently all of the developers working on the project are paid by their employer to work
on the project. These developers will work on the open source project as well as work on the
commercially supported distribution of Trafodion that HP will offer.

Relationship with Other Apache Products

Trafodion is built upon Apache HBase and extends it to support ACID transactions with HBase
co-processors for distributed transaction management and recovery. Trafodion envisions future
collaborations with the Apache HBase project on performance optimizations, such as in the
areas of mixed workload support, High Availability, etc. It also provides transactional support
and querying from native HBase tables as well.

Trafodion uses Apache Zookeeper to coordinate and manage the distribution of connection services
across the cluster for load-balancing and high availability reconnection purposes in the event
a Trafodion process should fail.

Trafodion also envisions working with the Apache Ambari project on enabling better Trafodion
manageability. While Ambari focuses on system and component level performance metrics, Trafodion
manageability will focus in a complimentary way on database workload monitoring and performance
analytics with capabilities more geared towards database administrators.

There are alternative open source projects that are providing SQL-on-Hadoop capabilities,
such as Apache Hive, Apache Drill, and Apache Phoenix. These are more focused on reporting
and analytics across data structures supported on HDFS. In comparison to all of these technologies
Trafodion provides a very complete implementation of ANSI SQL, one of the most sophisticated
optimizers for such workloads, a completely parallel data flow architecture that does not
materialize intermediate results unless necessary, full ACID transactional support, ANSI GRANT/REVOKE
security, and other capabilities that would take decades to build in these products. On the
other hand currently Trafodion is just focused on HBase and querying Hive, whereas Hive and
Drill provide access to other data formats in HDFS.

An Excessive Fascination with the Apache Brand

We understand the reputation and value of the Apache brand, and no doubt believe that it will
help us attract contributors and users. Our primary goal is to follow a proven, open source
development and community building model that will make Trafodion successful and enable better
collaboration with other Apache projects in the Hadoop ecosystem. We also understand the rules
and guidelines about the use of the Apache brand and intend to follow them.


Documentation and technical details on Trafodion can be found at:

Initial Source

The source is available today in a public github repository:

Source and Intellectual Property Submission Plan

The source code has already been released under the Apache License, Version 2. The manuals
have been released in Adobe PDF format. As part of the submission process, the source for
the manuals will be converted from a proprietary DocBook XML format to AsciiDoc.

External Dependencies

Two dependencies do not have Apache compatible licenses and will be addressed as we enter
incubation. One dependency is log4cpp, which is licensed under the LGPL. A compatible alternative
might be Apache incubator project log4cxx. The other dependency is unixodbc, which is used
as the ODBC driver manager. We will look into how Apache Hive manages being able to use this
incompatible software and do similar. All other dependencies have Apache compatible licenses,
including Apache 2.0, MIT/X11, MIT, and BSD.


Trafodion does not contain any cryptographic code. It does call cryptographic libraries: OpenSSL
for C++ code and Java Cryptography Extension (JCE) for Java code.

Required Resources

Mailing Lists

Git Repository

Issue Tracking

JIRA: JIRA Trafodion (Trafodion)

Initial Committers and Affiliation

Dave Birdsall, Hewlett-Packard Company, Dave.Birdsall<AT>hp<DOT>com Matt Brown,
Hewlett-Packard Company, mattbrown<AT>hp<DOT>com Tharak Capirala, Hewlett-Packard
Company, Tharak.Capirala<AT>hp<DOT>com Alice Chen, Hewlett-Packard Company, Alice.Chen<AT>hp<DOT>com
John DeRoo, Hewlett-Packard Company, John.Deroo<AT>hp<DOT>com Roberta Marton,
Hewlett-Packard Company, Roberta.Marton<AT>hp<DOT>com Amanda Moran, Hewlett-Packard
Company, Amanda.Kay.Moran<AT>hp<DOT>com Suresh Subbiah, Hewlett-Packard Company,
Suresh.Subbiah<AT>hp<DOT>com Sandyha Sundaresan, Hewlett-Packard Company, Sandhya.Sundaresan<AT>hp<DOT>com



Michael Stack, Stack<AT>apache<DOT>org

Nominated Mentors

Andrew Purtell apurtell<AT>apache<DOT>org Devaraj Das, ddas<AT>apache<DOT>or
Enis Söztutar, Enis<AT>apache<DOT>org Lars Hofhansl, larsh<AT>apache<DOT>org
Michael Stack, Stack<AT>apache<DOT>org Roman Shaposhnik, rshaposhnik<AT>pivotal<DOT>io

Sponsoring Entity

Apache Incubator PMC
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