[PROPOSAL] Heron

[Bill Graham <bi...@gmail.com>]

Dear Apache Incubator Community,

We are excited to share our proposal for discussion and feedback
for entering Apache Incubation. Heron is a real-time, distributed,
fault-tolerant stream processing engine.

Our proposal can be found at https://wiki.apache.org/incubator/HeronProposal
 and is included below.


Thank you,

Bill Graham on behalf of the Heron developers


# Heron Proposal

## Abstract
Heron is a real-time, distributed, fault-tolerant stream processing engine
initially developed by Twitter.

## Proposal

Heron is a real-time stream processing engine built for high performance,
ease of manageability, performance predictability and developer
productivity[1]. We wish to develop a community around Heron to increase
contributions and see Heron thrive in an open forum.

## Background

Heron provides the ability for developers to compose directed acyclic
graphs (DAGs) of real-time query execution logic (i.e. a topology) and
submit the topology to execute on a pluggable job scheduling system (e.g.,
Apache Aurora, YARN, Marathon, etc). Users can employ either the native
Heron API or the Apache Storm API to develop the topology. Heron supports
the Storm API for ease of migration, but beyond that Heron’s architecture
differs considerably from Storm’s.

Users submit a topology to the scheduler using the Heron client, which uses
the Heron binary libraries to deploy all daemons required to run and manage
the topology. The topology therefore has no reliance on centrally managed
Heron services, only on a generic job scheduling system, which lends itself
well to be run on top of Apache Aurora/Mesos or Apache Hadoop/YARN (among
others).

The scheduler runs each topology as a job consisting of multiple
containers. One of the containers runs the topology master, responsible for
managing the topology. The remaining containers each runs a stream manager
responsible for data routing, a metrics manager that collects and reports
various metrics and a number of processes called Heron instances which run
the user-defined logic on the stream of tuples. Parallelism is achieved via
process-based isolation of Heron instances, which provides predictable
performance while simplifying debugging. The containers are allocated and
managed by the scheduler framework based on resource availability of nodes
in the cluster. The metadata for the topology, such as the physical plan
and execution details, are stored in the pluggable Heron State Manager
(e.g. Apache ZooKeeper).

## Rationale

Heron is a general-purpose, modular and extensible platform that can be
leveraged to support common, real-time analytics use cases. There is an
increasing demand for open-source, scalable real-time analytics systems. We
believe that Heron can be leveraged by other organizations to build
streaming applications that can benefit from its robustness, high
performance, adaptability to cloud environments and ease of use. Moreover,
we hope that open-sourcing Heron will help to further evolve the technology
as the project attracts contributors with diverse backgrounds and areas of
expertise.

We believe the Apache foundation is a great fit as the long-term home for
Heron, as it provides an established process for community-driven
development and decision making by consensus. This is exactly the model we
want for future Heron development.

## Initial Goals

* Move the existing codebase, website, documentation, and mailing lists to
Apache-hosted infrastructure.
* Integrate with the Apache development process.
* Ensure all dependencies are compliant with Apache License version 2.0.
* Incrementally develop and release per Apache guidelines.

## Current Status

Heron is a stable project used in production at Twitter since 2014 and open
sourced under the ASL v2 license in 2016. The Heron source code is
currently hosted at github.com (https://github.com/twitter/heron), which
will seed the Apache git repository.

### Meritocracy

By submitting this incubator proposal, we’re expressing our intent to build
a diverse developer community around Heron that will conduct itself
according to The Apache Way and use a meritocratic means of building it's
committer base. Several companies and universities have already expressed
interest in and contributed to Heron. Our goal is to grow the Heron
community by encouraging open communication, contribution and participation
of all types, and ensuring that contributors are recognized appropriately.

### Community

Heron is currently being used by Twitter, Google, Machine Zone and
ndustrial.io and has received significant contributions by Microsoft and
Streamlio. By bringing Heron into the Apache ecosystem, we believe we can
attract even more developers who are interested in creating real-time
systems to build the project's contributor base.

### Core Developers

Current core developers are engineers from Twitter, Google, Microsoft and
Streamlio.

### Alignment

Heron utilizes a number of Apache technologies. Heron leverages Apache
ZooKeeper for coordination and has scheduler implementations to integrate
with Apache Mesos, Apache Aurora and Apache Hadoop's YARN (via Apache REEF)
as well as spout implementations to integrate with Apache Kafka and metrics
implementations to integrate with Scribe. Heron also implements the Apache
Storm user-level API, which allows topologies written against Storm to run
in Heron. We believe that having Heron at Apache will help further the
growth of the streaming compute community, as well as encourage cooperation
and developer cross pollination with other Apache projects.

## Known Risks

### Orphaned Products

The risk of the Heron project being abandoned is minimal. It is used in
production at Twitter and Google and other companies are evaluating or
adopting it for production use.

### Inexperience with Open Source

All of the core contributors to the project have considerable experience
with open source software development. Bill Graham[2], Ashvin Agrawal[3]
and Supun Kamburugamuve[4], committers on the project, are PMCs on other
Apache projects and Bill and Ashvin have gone through the Apache incubator
process. Twitter has already donated numerous projects to the ASF (e.g.,
Apache Mesos, Apache Aurora, Apache Parquet). We also plan to be mentored
by experienced ASF members that can help with any roadblocks.

### Homogenous Developers

Initial committers come from 5 separate organizations. Our intention is
increase the diversity of contributing developers and their affiliations.
To date github contributions have come from approximately 50 contributors
from outside the Twitter team.

### Reliance on Salaried Developers

It is expected that Heron development will occur on both salaried time and
on volunteer time. The majority of initial committers are paid by their
employers to contribute to this project. We are committed to recruiting
additional committers from other organizations as well as non-salaried
committers to join project.

### Relationships with Other Apache Products

As mentioned in the Alignment section, Heron implements the Apache Storm
API and integrates with multiple Apache schedulers (Apache Mesos, Apache
Aurora and Apache Hadoop's YARN) as well as Apache ZooKeeper and Apache
Thrift.

### An Excessive Fascination with the Apache Brand

Heron's popularity is growing in the streaming compute space and we are
long time supporters of the Apache brand. This proposal is not for the
purpose of generating publicity through. Rather, the primary benefits to
joining Apache are those of community building and open decision making
outlined in the Rationale section.

## Documentation

This proposal exists online as http://wiki.apache.org/
incubator/HeronProposal. Extensive documentation can be found on github at
https://twitter.github.io/heron and the source code is well documented.

## Source and Intellectual Property Submission Plan

The Heron codebase is currently hosted on Github:
https://github.com/twitter/heron. During incubation, the codebase will be
migrated to Apache infrastructure. The source code is already ASF 2.0
licensed.

## External Dependencies

All external libraries have ASF 2.0 compatible licenses except for pylint.
The pylint library is GPL licensed, but is only used for pre-build Python
style checks and is neither bundled with, nor relied upon by, the Heron
source or binary release artifacts.

## Cryptography

Heron does not use any cryptography libraries.

## Required Resources

### Mailing lists

private@heron.incubator.apache.org (with moderated subscriptions)
dev@heron.incubator.apache.org
commits@heron.incubator.apache.org
user@heron.incubator.apache.org

## Subversion Directory

Git is the preferred source control system: git://git.apache.org/heron

## Issue Tracking

JIRA: Heron (HERON)

## Initial Committers

* Andrew Jorgensen (andrew at andrewjorgensen dot com)
* Ashvin Agrawal (ashvin at apache dot org)*
* Avrilia Floratou (avrilia dot floratou at gmail dot com)
* Bill Graham (billgraham at apache dot org)*
* Brian Hatfield (bmhatfield at gmail dot com)
* Chris Kellogg (cckellogg at gmail dot com)
* Huijun Wu (huijun dot wu dot 2010 at gmail dot com)
* Karthik Ramasamy (karthik at gmail dot com)
* Maosong Fu (maosongfu at gmail dot com)
* Neng Lu(freeneng at gmail dot com)
* Runhang Li (obj dot runhang at gmail dot com)
* Sanjeev Kulkarni (sanjeevrk at gmail dot com)
* Supun Kamburugamuve (supun at apache dot org)*
* Thomas Sun (tom dot ssf at gmail dot com)
* Yaliang Wang (yaliang dot w dot wang at ieee dot org)

## Affiliations

* Andrew Jorgensen (Google)
* Ashvin Agrawal (Microsoft)
* Avrilia Floratou (Microsoft)
* Bill Graham (Twitter)
* Brian Hatfield (Google)
* Chris Kellogg (Twitter)
* Huijun Wu (Twitter)
* Karthik Ramasamy (Streamlio)
* Maosong Fu (Twitter)
* Neng Lu (Twitter)
* Runhang Li (Twitter)
* Sanjeev Kulkarni (Streamlio)
* Supun Kamburugamuve (Indiana University)
* Thomas Sun (Twitter)
* Yaliang Wang (Twitter)

## Sponsors

### Champion

* Julien Le Dem (julien at apache dot org)

### Nominated Mentors

* Jake Farrell (jfarrell at apache dot org)
* Jacques Nadeau (jacques at apache dot org)
* Julien Le Dem (julien at apache dot org)

### Sponsoring Entity

The Apache Incubator

### Footnotes

1 - Papers detailing Heron are available at http://dl.acm.org/citation.
cfm?id=2742788 and http://sites.computer.org/debull/A15dec/p15.pdf.
2 - http://home.apache.org/phonebook.html?uid=billgraham
3 - http://home.apache.org/phonebook.html?uid=ashvin
4 - http://home.apache.org/phonebook.html?uid=supun

Re: [PROPOSAL] Heron

[Bill Graham <bi...@gmail.com>]

Thanks Supun. The main commonality with Storm is that Heron implements the
Storm user-facing API for developing topologies. Besides that the
architecture is completely different (no central services, full isolation
at the process, task and topology levels, pluggable scheduler, etc). The
key unique elements of the Heron architecture are described in paragraphs 2
and 3 of Background section.

On Fri, Jun 9, 2017 at 12:17 PM, Supun Kamburugamuva <su...@apache.org>
wrote:

> Thanks Bill for bringing up the proposal. Should there be a sentence or
> two describing how Heron compares with Storm?
>
> Regards,
> Supun..
>
> On Thu, Jun 8, 2017 at 1:23 PM, Bill Graham <bi...@gmail.com> wrote:
>
>> Dear Apache Incubator Community,
>>
>> We are excited to share our proposal for discussion and feedback
>> for entering Apache Incubation. Heron is a real-time, distributed,
>> fault-tolerant stream processing engine.
>>
>> Our proposal can be found at https://wiki.apache.org/incuba
>> tor/HeronProposal
>>  and is included below.
>>
>>
>> Thank you,
>>
>> Bill Graham on behalf of the Heron developers
>>
>>
>> # Heron Proposal
>>
>> ## Abstract
>> Heron is a real-time, distributed, fault-tolerant stream processing engine
>> initially developed by Twitter.
>>
>> ## Proposal
>>
>> Heron is a real-time stream processing engine built for high performance,
>> ease of manageability, performance predictability and developer
>> productivity[1]. We wish to develop a community around Heron to increase
>> contributions and see Heron thrive in an open forum.
>>
>> ## Background
>>
>> Heron provides the ability for developers to compose directed acyclic
>> graphs (DAGs) of real-time query execution logic (i.e. a topology) and
>> submit the topology to execute on a pluggable job scheduling system (e.g.,
>> Apache Aurora, YARN, Marathon, etc). Users can employ either the native
>> Heron API or the Apache Storm API to develop the topology. Heron supports
>> the Storm API for ease of migration, but beyond that Heron’s architecture
>> differs considerably from Storm’s.
>>
>> Users submit a topology to the scheduler using the Heron client, which
>> uses
>> the Heron binary libraries to deploy all daemons required to run and
>> manage
>> the topology. The topology therefore has no reliance on centrally managed
>> Heron services, only on a generic job scheduling system, which lends
>> itself
>> well to be run on top of Apache Aurora/Mesos or Apache Hadoop/YARN (among
>> others).
>>
>> The scheduler runs each topology as a job consisting of multiple
>> containers. One of the containers runs the topology master, responsible
>> for
>> managing the topology. The remaining containers each runs a stream manager
>> responsible for data routing, a metrics manager that collects and reports
>> various metrics and a number of processes called Heron instances which run
>> the user-defined logic on the stream of tuples. Parallelism is achieved
>> via
>> process-based isolation of Heron instances, which provides predictable
>> performance while simplifying debugging. The containers are allocated and
>> managed by the scheduler framework based on resource availability of nodes
>> in the cluster. The metadata for the topology, such as the physical plan
>> and execution details, are stored in the pluggable Heron State Manager
>> (e.g. Apache ZooKeeper).
>>
>> ## Rationale
>>
>> Heron is a general-purpose, modular and extensible platform that can be
>> leveraged to support common, real-time analytics use cases. There is an
>> increasing demand for open-source, scalable real-time analytics systems.
>> We
>> believe that Heron can be leveraged by other organizations to build
>> streaming applications that can benefit from its robustness, high
>> performance, adaptability to cloud environments and ease of use. Moreover,
>> we hope that open-sourcing Heron will help to further evolve the
>> technology
>> as the project attracts contributors with diverse backgrounds and areas of
>> expertise.
>>
>> We believe the Apache foundation is a great fit as the long-term home for
>> Heron, as it provides an established process for community-driven
>> development and decision making by consensus. This is exactly the model we
>> want for future Heron development.
>>
>> ## Initial Goals
>>
>> * Move the existing codebase, website, documentation, and mailing lists to
>> Apache-hosted infrastructure.
>> * Integrate with the Apache development process.
>> * Ensure all dependencies are compliant with Apache License version 2.0.
>> * Incrementally develop and release per Apache guidelines.
>>
>> ## Current Status
>>
>> Heron is a stable project used in production at Twitter since 2014 and
>> open
>> sourced under the ASL v2 license in 2016. The Heron source code is
>> currently hosted at github.com (https://github.com/twitter/heron), which
>> will seed the Apache git repository.
>>
>> ### Meritocracy
>>
>> By submitting this incubator proposal, we’re expressing our intent to
>> build
>> a diverse developer community around Heron that will conduct itself
>> according to The Apache Way and use a meritocratic means of building it's
>> committer base. Several companies and universities have already expressed
>> interest in and contributed to Heron. Our goal is to grow the Heron
>> community by encouraging open communication, contribution and
>> participation
>> of all types, and ensuring that contributors are recognized appropriately.
>>
>> ### Community
>>
>> Heron is currently being used by Twitter, Google, Machine Zone and
>> ndustrial.io and has received significant contributions by Microsoft and
>> Streamlio. By bringing Heron into the Apache ecosystem, we believe we can
>> attract even more developers who are interested in creating real-time
>> systems to build the project's contributor base.
>>
>> ### Core Developers
>>
>> Current core developers are engineers from Twitter, Google, Microsoft and
>> Streamlio.
>>
>> ### Alignment
>>
>> Heron utilizes a number of Apache technologies. Heron leverages Apache
>> ZooKeeper for coordination and has scheduler implementations to integrate
>> with Apache Mesos, Apache Aurora and Apache Hadoop's YARN (via Apache
>> REEF)
>> as well as spout implementations to integrate with Apache Kafka and
>> metrics
>> implementations to integrate with Scribe. Heron also implements the Apache
>> Storm user-level API, which allows topologies written against Storm to run
>> in Heron. We believe that having Heron at Apache will help further the
>> growth of the streaming compute community, as well as encourage
>> cooperation
>> and developer cross pollination with other Apache projects.
>>
>> ## Known Risks
>>
>> ### Orphaned Products
>>
>> The risk of the Heron project being abandoned is minimal. It is used in
>> production at Twitter and Google and other companies are evaluating or
>> adopting it for production use.
>>
>> ### Inexperience with Open Source
>>
>> All of the core contributors to the project have considerable experience
>> with open source software development. Bill Graham[2], Ashvin Agrawal[3]
>> and Supun Kamburugamuve[4], committers on the project, are PMCs on other
>> Apache projects and Bill and Ashvin have gone through the Apache incubator
>> process. Twitter has already donated numerous projects to the ASF (e.g.,
>> Apache Mesos, Apache Aurora, Apache Parquet). We also plan to be mentored
>> by experienced ASF members that can help with any roadblocks.
>>
>> ### Homogenous Developers
>>
>> Initial committers come from 5 separate organizations. Our intention is
>> increase the diversity of contributing developers and their affiliations.
>> To date github contributions have come from approximately 50 contributors
>> from outside the Twitter team.
>>
>> ### Reliance on Salaried Developers
>>
>> It is expected that Heron development will occur on both salaried time and
>> on volunteer time. The majority of initial committers are paid by their
>> employers to contribute to this project. We are committed to recruiting
>> additional committers from other organizations as well as non-salaried
>> committers to join project.
>>
>> ### Relationships with Other Apache Products
>>
>> As mentioned in the Alignment section, Heron implements the Apache Storm
>> API and integrates with multiple Apache schedulers (Apache Mesos, Apache
>> Aurora and Apache Hadoop's YARN) as well as Apache ZooKeeper and Apache
>> Thrift.
>>
>> ### An Excessive Fascination with the Apache Brand
>>
>> Heron's popularity is growing in the streaming compute space and we are
>> long time supporters of the Apache brand. This proposal is not for the
>> purpose of generating publicity through. Rather, the primary benefits to
>> joining Apache are those of community building and open decision making
>> outlined in the Rationale section.
>>
>> ## Documentation
>>
>> This proposal exists online as http://wiki.apache.org/
>> incubator/HeronProposal. Extensive documentation can be found on github at
>> https://twitter.github.io/heron and the source code is well documented.
>>
>> ## Source and Intellectual Property Submission Plan
>>
>> The Heron codebase is currently hosted on Github:
>> https://github.com/twitter/heron. During incubation, the codebase will be
>> migrated to Apache infrastructure. The source code is already ASF 2.0
>> licensed.
>>
>> ## External Dependencies
>>
>> All external libraries have ASF 2.0 compatible licenses except for pylint.
>> The pylint library is GPL licensed, but is only used for pre-build Python
>> style checks and is neither bundled with, nor relied upon by, the Heron
>> source or binary release artifacts.
>>
>> ## Cryptography
>>
>> Heron does not use any cryptography libraries.
>>
>> ## Required Resources
>>
>> ### Mailing lists
>>
>> private@heron.incubator.apache.org (with moderated subscriptions)
>> dev@heron.incubator.apache.org
>> commits@heron.incubator.apache.org
>> user@heron.incubator.apache.org
>>
>> ## Subversion Directory
>>
>> Git is the preferred source control system: git://git.apache.org/heron
>>
>> ## Issue Tracking
>>
>> JIRA: Heron (HERON)
>>
>> ## Initial Committers
>>
>> * Andrew Jorgensen (andrew at andrewjorgensen dot com)
>> * Ashvin Agrawal (ashvin at apache dot org)*
>> * Avrilia Floratou (avrilia dot floratou at gmail dot com)
>> * Bill Graham (billgraham at apache dot org)*
>> * Brian Hatfield (bmhatfield at gmail dot com)
>> * Chris Kellogg (cckellogg at gmail dot com)
>> * Huijun Wu (huijun dot wu dot 2010 at gmail dot com)
>> * Karthik Ramasamy (karthik at gmail dot com)
>> * Maosong Fu (maosongfu at gmail dot com)
>> * Neng Lu(freeneng at gmail dot com)
>> * Runhang Li (obj dot runhang at gmail dot com)
>> * Sanjeev Kulkarni (sanjeevrk at gmail dot com)
>> * Supun Kamburugamuve (supun at apache dot org)*
>> * Thomas Sun (tom dot ssf at gmail dot com)
>> * Yaliang Wang (yaliang dot w dot wang at ieee dot org)
>>
>> ## Affiliations
>>
>> * Andrew Jorgensen (Google)
>> * Ashvin Agrawal (Microsoft)
>> * Avrilia Floratou (Microsoft)
>> * Bill Graham (Twitter)
>> * Brian Hatfield (Google)
>> * Chris Kellogg (Twitter)
>> * Huijun Wu (Twitter)
>> * Karthik Ramasamy (Streamlio)
>> * Maosong Fu (Twitter)
>> * Neng Lu (Twitter)
>> * Runhang Li (Twitter)
>> * Sanjeev Kulkarni (Streamlio)
>> * Supun Kamburugamuve (Indiana University)
>> * Thomas Sun (Twitter)
>> * Yaliang Wang (Twitter)
>>
>> ## Sponsors
>>
>> ### Champion
>>
>> * Julien Le Dem (julien at apache dot org)
>>
>> ### Nominated Mentors
>>
>> * Jake Farrell (jfarrell at apache dot org)
>> * Jacques Nadeau (jacques at apache dot org)
>> * Julien Le Dem (julien at apache dot org)
>>
>> ### Sponsoring Entity
>>
>> The Apache Incubator
>>
>> ### Footnotes
>>
>> 1 - Papers detailing Heron are available at
>> http://dl.acm.org/citation.
>> cfm?id=2742788 <http://dl.acm.org/citation.cfm?id=2742788> and
>> http://sites.computer.org/debull/A15dec/p15.pdf.
>> 2 - http://home.apache.org/phonebook.html?uid=billgraham
>> 3 - http://home.apache.org/phonebook.html?uid=ashvin
>> 4 - http://home.apache.org/phonebook.html?uid=supun
>>
>
>
>
> --
> Tech Lead, WSO2 Inc
> http://wso2.org
> supunk.blogspot.com
>
>

Re: [PROPOSAL] Heron

[Supun Kamburugamuva <su...@apache.org>]

Thanks Bill for bringing up the proposal. Should there be a sentence or two
describing how Heron compares with Storm?

Regards,
Supun..

On Thu, Jun 8, 2017 at 1:23 PM, Bill Graham <bi...@gmail.com> wrote:

> Dear Apache Incubator Community,
>
> We are excited to share our proposal for discussion and feedback
> for entering Apache Incubation. Heron is a real-time, distributed,
> fault-tolerant stream processing engine.
>
> Our proposal can be found at https://wiki.apache.org/
> incubator/HeronProposal
>  and is included below.
>
>
> Thank you,
>
> Bill Graham on behalf of the Heron developers
>
>
> # Heron Proposal
>
> ## Abstract
> Heron is a real-time, distributed, fault-tolerant stream processing engine
> initially developed by Twitter.
>
> ## Proposal
>
> Heron is a real-time stream processing engine built for high performance,
> ease of manageability, performance predictability and developer
> productivity[1]. We wish to develop a community around Heron to increase
> contributions and see Heron thrive in an open forum.
>
> ## Background
>
> Heron provides the ability for developers to compose directed acyclic
> graphs (DAGs) of real-time query execution logic (i.e. a topology) and
> submit the topology to execute on a pluggable job scheduling system (e.g.,
> Apache Aurora, YARN, Marathon, etc). Users can employ either the native
> Heron API or the Apache Storm API to develop the topology. Heron supports
> the Storm API for ease of migration, but beyond that Heron’s architecture
> differs considerably from Storm’s.
>
> Users submit a topology to the scheduler using the Heron client, which uses
> the Heron binary libraries to deploy all daemons required to run and manage
> the topology. The topology therefore has no reliance on centrally managed
> Heron services, only on a generic job scheduling system, which lends itself
> well to be run on top of Apache Aurora/Mesos or Apache Hadoop/YARN (among
> others).
>
> The scheduler runs each topology as a job consisting of multiple
> containers. One of the containers runs the topology master, responsible for
> managing the topology. The remaining containers each runs a stream manager
> responsible for data routing, a metrics manager that collects and reports
> various metrics and a number of processes called Heron instances which run
> the user-defined logic on the stream of tuples. Parallelism is achieved via
> process-based isolation of Heron instances, which provides predictable
> performance while simplifying debugging. The containers are allocated and
> managed by the scheduler framework based on resource availability of nodes
> in the cluster. The metadata for the topology, such as the physical plan
> and execution details, are stored in the pluggable Heron State Manager
> (e.g. Apache ZooKeeper).
>
> ## Rationale
>
> Heron is a general-purpose, modular and extensible platform that can be
> leveraged to support common, real-time analytics use cases. There is an
> increasing demand for open-source, scalable real-time analytics systems. We
> believe that Heron can be leveraged by other organizations to build
> streaming applications that can benefit from its robustness, high
> performance, adaptability to cloud environments and ease of use. Moreover,
> we hope that open-sourcing Heron will help to further evolve the technology
> as the project attracts contributors with diverse backgrounds and areas of
> expertise.
>
> We believe the Apache foundation is a great fit as the long-term home for
> Heron, as it provides an established process for community-driven
> development and decision making by consensus. This is exactly the model we
> want for future Heron development.
>
> ## Initial Goals
>
> * Move the existing codebase, website, documentation, and mailing lists to
> Apache-hosted infrastructure.
> * Integrate with the Apache development process.
> * Ensure all dependencies are compliant with Apache License version 2.0.
> * Incrementally develop and release per Apache guidelines.
>
> ## Current Status
>
> Heron is a stable project used in production at Twitter since 2014 and open
> sourced under the ASL v2 license in 2016. The Heron source code is
> currently hosted at github.com (https://github.com/twitter/heron), which
> will seed the Apache git repository.
>
> ### Meritocracy
>
> By submitting this incubator proposal, we’re expressing our intent to build
> a diverse developer community around Heron that will conduct itself
> according to The Apache Way and use a meritocratic means of building it's
> committer base. Several companies and universities have already expressed
> interest in and contributed to Heron. Our goal is to grow the Heron
> community by encouraging open communication, contribution and participation
> of all types, and ensuring that contributors are recognized appropriately.
>
> ### Community
>
> Heron is currently being used by Twitter, Google, Machine Zone and
> ndustrial.io and has received significant contributions by Microsoft and
> Streamlio. By bringing Heron into the Apache ecosystem, we believe we can
> attract even more developers who are interested in creating real-time
> systems to build the project's contributor base.
>
> ### Core Developers
>
> Current core developers are engineers from Twitter, Google, Microsoft and
> Streamlio.
>
> ### Alignment
>
> Heron utilizes a number of Apache technologies. Heron leverages Apache
> ZooKeeper for coordination and has scheduler implementations to integrate
> with Apache Mesos, Apache Aurora and Apache Hadoop's YARN (via Apache REEF)
> as well as spout implementations to integrate with Apache Kafka and metrics
> implementations to integrate with Scribe. Heron also implements the Apache
> Storm user-level API, which allows topologies written against Storm to run
> in Heron. We believe that having Heron at Apache will help further the
> growth of the streaming compute community, as well as encourage cooperation
> and developer cross pollination with other Apache projects.
>
> ## Known Risks
>
> ### Orphaned Products
>
> The risk of the Heron project being abandoned is minimal. It is used in
> production at Twitter and Google and other companies are evaluating or
> adopting it for production use.
>
> ### Inexperience with Open Source
>
> All of the core contributors to the project have considerable experience
> with open source software development. Bill Graham[2], Ashvin Agrawal[3]
> and Supun Kamburugamuve[4], committers on the project, are PMCs on other
> Apache projects and Bill and Ashvin have gone through the Apache incubator
> process. Twitter has already donated numerous projects to the ASF (e.g.,
> Apache Mesos, Apache Aurora, Apache Parquet). We also plan to be mentored
> by experienced ASF members that can help with any roadblocks.
>
> ### Homogenous Developers
>
> Initial committers come from 5 separate organizations. Our intention is
> increase the diversity of contributing developers and their affiliations.
> To date github contributions have come from approximately 50 contributors
> from outside the Twitter team.
>
> ### Reliance on Salaried Developers
>
> It is expected that Heron development will occur on both salaried time and
> on volunteer time. The majority of initial committers are paid by their
> employers to contribute to this project. We are committed to recruiting
> additional committers from other organizations as well as non-salaried
> committers to join project.
>
> ### Relationships with Other Apache Products
>
> As mentioned in the Alignment section, Heron implements the Apache Storm
> API and integrates with multiple Apache schedulers (Apache Mesos, Apache
> Aurora and Apache Hadoop's YARN) as well as Apache ZooKeeper and Apache
> Thrift.
>
> ### An Excessive Fascination with the Apache Brand
>
> Heron's popularity is growing in the streaming compute space and we are
> long time supporters of the Apache brand. This proposal is not for the
> purpose of generating publicity through. Rather, the primary benefits to
> joining Apache are those of community building and open decision making
> outlined in the Rationale section.
>
> ## Documentation
>
> This proposal exists online as http://wiki.apache.org/
> incubator/HeronProposal. Extensive documentation can be found on github at
> https://twitter.github.io/heron and the source code is well documented.
>
> ## Source and Intellectual Property Submission Plan
>
> The Heron codebase is currently hosted on Github:
> https://github.com/twitter/heron. During incubation, the codebase will be
> migrated to Apache infrastructure. The source code is already ASF 2.0
> licensed.
>
> ## External Dependencies
>
> All external libraries have ASF 2.0 compatible licenses except for pylint.
> The pylint library is GPL licensed, but is only used for pre-build Python
> style checks and is neither bundled with, nor relied upon by, the Heron
> source or binary release artifacts.
>
> ## Cryptography
>
> Heron does not use any cryptography libraries.
>
> ## Required Resources
>
> ### Mailing lists
>
> private@heron.incubator.apache.org (with moderated subscriptions)
> dev@heron.incubator.apache.org
> commits@heron.incubator.apache.org
> user@heron.incubator.apache.org
>
> ## Subversion Directory
>
> Git is the preferred source control system: git://git.apache.org/heron
>
> ## Issue Tracking
>
> JIRA: Heron (HERON)
>
> ## Initial Committers
>
> * Andrew Jorgensen (andrew at andrewjorgensen dot com)
> * Ashvin Agrawal (ashvin at apache dot org)*
> * Avrilia Floratou (avrilia dot floratou at gmail dot com)
> * Bill Graham (billgraham at apache dot org)*
> * Brian Hatfield (bmhatfield at gmail dot com)
> * Chris Kellogg (cckellogg at gmail dot com)
> * Huijun Wu (huijun dot wu dot 2010 at gmail dot com)
> * Karthik Ramasamy (karthik at gmail dot com)
> * Maosong Fu (maosongfu at gmail dot com)
> * Neng Lu(freeneng at gmail dot com)
> * Runhang Li (obj dot runhang at gmail dot com)
> * Sanjeev Kulkarni (sanjeevrk at gmail dot com)
> * Supun Kamburugamuve (supun at apache dot org)*
> * Thomas Sun (tom dot ssf at gmail dot com)
> * Yaliang Wang (yaliang dot w dot wang at ieee dot org)
>
> ## Affiliations
>
> * Andrew Jorgensen (Google)
> * Ashvin Agrawal (Microsoft)
> * Avrilia Floratou (Microsoft)
> * Bill Graham (Twitter)
> * Brian Hatfield (Google)
> * Chris Kellogg (Twitter)
> * Huijun Wu (Twitter)
> * Karthik Ramasamy (Streamlio)
> * Maosong Fu (Twitter)
> * Neng Lu (Twitter)
> * Runhang Li (Twitter)
> * Sanjeev Kulkarni (Streamlio)
> * Supun Kamburugamuve (Indiana University)
> * Thomas Sun (Twitter)
> * Yaliang Wang (Twitter)
>
> ## Sponsors
>
> ### Champion
>
> * Julien Le Dem (julien at apache dot org)
>
> ### Nominated Mentors
>
> * Jake Farrell (jfarrell at apache dot org)
> * Jacques Nadeau (jacques at apache dot org)
> * Julien Le Dem (julien at apache dot org)
>
> ### Sponsoring Entity
>
> The Apache Incubator
>
> ### Footnotes
>
> 1 - Papers detailing Heron are available at http://dl.acm.org/citation.
> cfm?id=2742788 and http://sites.computer.org/debull/A15dec/p15.pdf.
> 2 - http://home.apache.org/phonebook.html?uid=billgraham
> 3 - http://home.apache.org/phonebook.html?uid=ashvin
> 4 - http://home.apache.org/phonebook.html?uid=supun
>



-- 
Tech Lead, WSO2 Inc
http://wso2.org
supunk.blogspot.com

Re: [PROPOSAL] Heron

[Ashvin A <aa...@gmail.com>]

On Thu, Jun 15, 2017 at 1:24 PM, Bill Graham <bi...@gmail.com> wrote:

...

One of our goals during incubation will be to use open forums of
> communication, like the Apache mailing lists, and work to foster a truly
> collaborative environment for both Apache Storm and Heron community members
> to work within together.
>
>
+1



>
> On Thu, Jun 15, 2017 at 10:42 AM, Debo Dutta (dedutta) <de...@cisco.com>
> wrote:
>
> > Am happy to help too!
> >
> > Thx
> > Debo
> >
> > Sent from my iPhone
> >
> > > On Jun 14, 2017, at 8:05 PM, William Markito Oliveira <
> > william.markito@gmail.com> wrote:
> > >
> > > Howdy!
> > >
> > > If Heron is looking for some help around incubation process, I'd love
> to
> > > help while Geode experience is still fresh in my mind and given that
> > it's a
> > > project/space that I do have interest. Since I'm not an ASF member, I
> > don't
> > > think I can offer to be a mentor, but can probably still help and
> > > participate on the process.
> > >
> > > Thanks!
> > >
> > >> On Wed, Jun 14, 2017 at 7:54 PM, P. Taylor Goetz <pt...@gmail.com>
> > wrote:
> > >>
> > >> Hi Bill/Supun,
> > >>
> > >> Sorry for not being a little more clear. I was asking more about how
> the
> > >> Heron community would seek to engage with Storm community at the
> > >> *community* level as opposed to the technical level (i.e. “Community
> > over
> > >> Code”).
> > >>
> > >> I’ve been asked by many why this has never happened, and have always
> > >> struggled to answer. Maybe you could help answer that question as well
> > as
> > >> if and how that might change if Heron were to incubate.
> > >>
> > >> Another quick question: The proposal mentions Heron being used in
> > >> production at Google, but some Google employees I recently spoke to
> > seemed
> > >> to contradict that. Could you explain? Note that’s nothing that would
> > >> preclude the project from incubating, I’m just curious.
> > >>
> > >> -Taylor
> > >>
> > >>> On Jun 14, 2017, at 7:35 AM, Supun Kamburugamuve <su...@gmail.com>
> > >> wrote:
> > >>>
> > >>> Hi Taylor,
> > >>>
> > >>> For me, one of the interesting differences between Heron and Storm is
> > the
> > >>> execution model. Storm uses a shared memory model while Heron uses a
> > >>> process based model. It will be interesting to see how these two
> > evolve.
> > >>>
> > >>> Thanks,
> > >>> Supun..
> > >>>
> > >>> On Mon, Jun 12, 2017 at 4:15 PM, Bill Graham <bi...@gmail.com>
> > >> wrote:
> > >>>
> > >>>> Hi Taylor,
> > >>>>
> > >>>> Thanks for the mentor offer, we'd be glad to have your help.
> > >>>>
> > >>>> I think the best place for collaboration would be around the
> evolution
> > >> of
> > >>>> the API. In addition we plan to look more into DSL solutions which
> we
> > >> could
> > >>>> potentially collaborate on. This could be Trident, or Beam or
> > something
> > >>>> else, but there could be synergies for future development here.
> > >>>>
> > >>>> thanks,
> > >>>> Bill
> > >>>>
> > >>>> On Fri, Jun 9, 2017 at 8:53 PM, P. Taylor Goetz <pt...@gmail.com>
> > >> wrote:
> > >>>>
> > >>>>> Hi Bill,
> > >>>>>
> > >>>>> Could you comment on how/if the Heron community would be willing to
> > >> work
> > >>>>> with the Storm community? I've seen a number of new features in
> Storm
> > >>>> being
> > >>>>> ported to Heron, but I have yet to see any attempt by the Heron
> > >> community
> > >>>>> to engage with the Apache Storm community.
> > >>>>>
> > >>>>> I don't think it would be too far off to say that the relationship
> > >>>> between
> > >>>>> Heron and Apache Storm has been somewhat adversarial. The pre- and
> > >>>>> post-open sourcing marketing around Heron seemed, at least to me,
> > >>>> somewhat
> > >>>>> aggressively negative toward Storm.
> > >>>>>
> > >>>>> As a peer to Apache Storm, how would the proposed "Apache Heron"
> > >>>> community
> > >>>>> work to collaborate with the Storm community? If Heron is adopting
> > API
> > >>>>> changes in Storm, then it seems there is an opportunity for
> > >>>> collaboration.
> > >>>>>
> > >>>>> Don't take any of this as an objection to incubating the project. I
> > >> would
> > >>>>> support it. I would also be willing to be a mentor, if you would
> > >> consider
> > >>>>> taking on another.
> > >>>>>
> > >>>>> -Taylor
> > >>>>>
> > >>>>>> On Jun 8, 2017, at 1:23 PM, Bill Graham <bi...@gmail.com>
> > wrote:
> > >>>>>>
> > >>>>>> Dear Apache Incubator Community,
> > >>>>>>
> > >>>>>> We are excited to share our proposal for discussion and feedback
> > >>>>>> for entering Apache Incubation. Heron is a real-time, distributed,
> > >>>>>> fault-tolerant stream processing engine.
> > >>>>>>
> > >>>>>> Our proposal can be found at https://wiki.apache.org/
> > >>>>> incubator/HeronProposal
> > >>>>>> and is included below.
> > >>>>>>
> > >>>>>>
> > >>>>>> Thank you,
> > >>>>>>
> > >>>>>> Bill Graham on behalf of the Heron developers
> > >>>>>>
> > >>>>>>
> > >>>>>> # Heron Proposal
> > >>>>>>
> > >>>>>> ## Abstract
> > >>>>>> Heron is a real-time, distributed, fault-tolerant stream
> processing
> > >>>>> engine
> > >>>>>> initially developed by Twitter.
> > >>>>>>
> > >>>>>> ## Proposal
> > >>>>>>
> > >>>>>> Heron is a real-time stream processing engine built for high
> > >>>> performance,
> > >>>>>> ease of manageability, performance predictability and developer
> > >>>>>> productivity[1]. We wish to develop a community around Heron to
> > >>>> increase
> > >>>>>> contributions and see Heron thrive in an open forum.
> > >>>>>>
> > >>>>>> ## Background
> > >>>>>>
> > >>>>>> Heron provides the ability for developers to compose directed
> > acyclic
> > >>>>>> graphs (DAGs) of real-time query execution logic (i.e. a topology)
> > and
> > >>>>>> submit the topology to execute on a pluggable job scheduling
> system
> > >>>>> (e.g.,
> > >>>>>> Apache Aurora, YARN, Marathon, etc). Users can employ either the
> > >> native
> > >>>>>> Heron API or the Apache Storm API to develop the topology. Heron
> > >>>> supports
> > >>>>>> the Storm API for ease of migration, but beyond that Heron’s
> > >>>> architecture
> > >>>>>> differs considerably from Storm’s.
> > >>>>>>
> > >>>>>> Users submit a topology to the scheduler using the Heron client,
> > which
> > >>>>> uses
> > >>>>>> the Heron binary libraries to deploy all daemons required to run
> and
> > >>>>> manage
> > >>>>>> the topology. The topology therefore has no reliance on centrally
> > >>>> managed
> > >>>>>> Heron services, only on a generic job scheduling system, which
> lends
> > >>>>> itself
> > >>>>>> well to be run on top of Apache Aurora/Mesos or Apache Hadoop/YARN
> > >>>> (among
> > >>>>>> others).
> > >>>>>>
> > >>>>>> The scheduler runs each topology as a job consisting of multiple
> > >>>>>> containers. One of the containers runs the topology master,
> > >> responsible
> > >>>>> for
> > >>>>>> managing the topology. The remaining containers each runs a stream
> > >>>>> manager
> > >>>>>> responsible for data routing, a metrics manager that collects and
> > >>>> reports
> > >>>>>> various metrics and a number of processes called Heron instances
> > which
> > >>>>> run
> > >>>>>> the user-defined logic on the stream of tuples. Parallelism is
> > >> achieved
> > >>>>> via
> > >>>>>> process-based isolation of Heron instances, which provides
> > predictable
> > >>>>>> performance while simplifying debugging. The containers are
> > allocated
> > >>>> and
> > >>>>>> managed by the scheduler framework based on resource availability
> of
> > >>>>> nodes
> > >>>>>> in the cluster. The metadata for the topology, such as the
> physical
> > >>>> plan
> > >>>>>> and execution details, are stored in the pluggable Heron State
> > Manager
> > >>>>>> (e.g. Apache ZooKeeper).
> > >>>>>>
> > >>>>>> ## Rationale
> > >>>>>>
> > >>>>>> Heron is a general-purpose, modular and extensible platform that
> can
> > >> be
> > >>>>>> leveraged to support common, real-time analytics use cases. There
> is
> > >> an
> > >>>>>> increasing demand for open-source, scalable real-time analytics
> > >>>> systems.
> > >>>>> We
> > >>>>>> believe that Heron can be leveraged by other organizations to
> build
> > >>>>>> streaming applications that can benefit from its robustness, high
> > >>>>>> performance, adaptability to cloud environments and ease of use.
> > >>>>> Moreover,
> > >>>>>> we hope that open-sourcing Heron will help to further evolve the
> > >>>>> technology
> > >>>>>> as the project attracts contributors with diverse backgrounds and
> > >> areas
> > >>>>> of
> > >>>>>> expertise.
> > >>>>>>
> > >>>>>> We believe the Apache foundation is a great fit as the long-term
> > home
> > >>>> for
> > >>>>>> Heron, as it provides an established process for community-driven
> > >>>>>> development and decision making by consensus. This is exactly the
> > >> model
> > >>>>> we
> > >>>>>> want for future Heron development.
> > >>>>>>
> > >>>>>> ## Initial Goals
> > >>>>>>
> > >>>>>> * Move the existing codebase, website, documentation, and mailing
> > >> lists
> > >>>>> to
> > >>>>>> Apache-hosted infrastructure.
> > >>>>>> * Integrate with the Apache development process.
> > >>>>>> * Ensure all dependencies are compliant with Apache License
> version
> > >>>> 2.0.
> > >>>>>> * Incrementally develop and release per Apache guidelines.
> > >>>>>>
> > >>>>>> ## Current Status
> > >>>>>>
> > >>>>>> Heron is a stable project used in production at Twitter since 2014
> > and
> > >>>>> open
> > >>>>>> sourced under the ASL v2 license in 2016. The Heron source code is
> > >>>>>> currently hosted at github.com (https://github.com/twitter/heron
> ),
> > >>>> which
> > >>>>>> will seed the Apache git repository.
> > >>>>>>
> > >>>>>> ### Meritocracy
> > >>>>>>
> > >>>>>> By submitting this incubator proposal, we’re expressing our intent
> > to
> > >>>>> build
> > >>>>>> a diverse developer community around Heron that will conduct
> itself
> > >>>>>> according to The Apache Way and use a meritocratic means of
> building
> > >>>> it's
> > >>>>>> committer base. Several companies and universities have already
> > >>>> expressed
> > >>>>>> interest in and contributed to Heron. Our goal is to grow the
> Heron
> > >>>>>> community by encouraging open communication, contribution and
> > >>>>> participation
> > >>>>>> of all types, and ensuring that contributors are recognized
> > >>>>> appropriately.
> > >>>>>>
> > >>>>>> ### Community
> > >>>>>>
> > >>>>>> Heron is currently being used by Twitter, Google, Machine Zone and
> > >>>>>> ndustrial.io and has received significant contributions by
> > Microsoft
> > >>>> and
> > >>>>>> Streamlio. By bringing Heron into the Apache ecosystem, we believe
> > we
> > >>>> can
> > >>>>>> attract even more developers who are interested in creating
> > real-time
> > >>>>>> systems to build the project's contributor base.
> > >>>>>>
> > >>>>>> ### Core Developers
> > >>>>>>
> > >>>>>> Current core developers are engineers from Twitter, Google,
> > Microsoft
> > >>>> and
> > >>>>>> Streamlio.
> > >>>>>>
> > >>>>>> ### Alignment
> > >>>>>>
> > >>>>>> Heron utilizes a number of Apache technologies. Heron leverages
> > Apache
> > >>>>>> ZooKeeper for coordination and has scheduler implementations to
> > >>>> integrate
> > >>>>>> with Apache Mesos, Apache Aurora and Apache Hadoop's YARN (via
> > Apache
> > >>>>> REEF)
> > >>>>>> as well as spout implementations to integrate with Apache Kafka
> and
> > >>>>> metrics
> > >>>>>> implementations to integrate with Scribe. Heron also implements
> the
> > >>>>> Apache
> > >>>>>> Storm user-level API, which allows topologies written against
> Storm
> > to
> > >>>>> run
> > >>>>>> in Heron. We believe that having Heron at Apache will help further
> > the
> > >>>>>> growth of the streaming compute community, as well as encourage
> > >>>>> cooperation
> > >>>>>> and developer cross pollination with other Apache projects.
> > >>>>>>
> > >>>>>> ## Known Risks
> > >>>>>>
> > >>>>>> ### Orphaned Products
> > >>>>>>
> > >>>>>> The risk of the Heron project being abandoned is minimal. It is
> used
> > >> in
> > >>>>>> production at Twitter and Google and other companies are
> evaluating
> > or
> > >>>>>> adopting it for production use.
> > >>>>>>
> > >>>>>> ### Inexperience with Open Source
> > >>>>>>
> > >>>>>> All of the core contributors to the project have considerable
> > >>>> experience
> > >>>>>> with open source software development. Bill Graham[2], Ashvin
> > >>>> Agrawal[3]
> > >>>>>> and Supun Kamburugamuve[4], committers on the project, are PMCs on
> > >>>> other
> > >>>>>> Apache projects and Bill and Ashvin have gone through the Apache
> > >>>>> incubator
> > >>>>>> process. Twitter has already donated numerous projects to the ASF
> > >>>> (e.g.,
> > >>>>>> Apache Mesos, Apache Aurora, Apache Parquet). We also plan to be
> > >>>> mentored
> > >>>>>> by experienced ASF members that can help with any roadblocks.
> > >>>>>>
> > >>>>>> ### Homogenous Developers
> > >>>>>>
> > >>>>>> Initial committers come from 5 separate organizations. Our
> intention
> > >> is
> > >>>>>> increase the diversity of contributing developers and their
> > >>>> affiliations.
> > >>>>>> To date github contributions have come from approximately 50
> > >>>> contributors
> > >>>>>> from outside the Twitter team.
> > >>>>>>
> > >>>>>> ### Reliance on Salaried Developers
> > >>>>>>
> > >>>>>> It is expected that Heron development will occur on both salaried
> > time
> > >>>>> and
> > >>>>>> on volunteer time. The majority of initial committers are paid by
> > >> their
> > >>>>>> employers to contribute to this project. We are committed to
> > >> recruiting
> > >>>>>> additional committers from other organizations as well as
> > non-salaried
> > >>>>>> committers to join project.
> > >>>>>>
> > >>>>>> ### Relationships with Other Apache Products
> > >>>>>>
> > >>>>>> As mentioned in the Alignment section, Heron implements the Apache
> > >>>> Storm
> > >>>>>> API and integrates with multiple Apache schedulers (Apache Mesos,
> > >>>> Apache
> > >>>>>> Aurora and Apache Hadoop's YARN) as well as Apache ZooKeeper and
> > >> Apache
> > >>>>>> Thrift.
> > >>>>>>
> > >>>>>> ### An Excessive Fascination with the Apache Brand
> > >>>>>>
> > >>>>>> Heron's popularity is growing in the streaming compute space and
> we
> > >> are
> > >>>>>> long time supporters of the Apache brand. This proposal is not for
> > the
> > >>>>>> purpose of generating publicity through. Rather, the primary
> > benefits
> > >>>> to
> > >>>>>> joining Apache are those of community building and open decision
> > >> making
> > >>>>>> outlined in the Rationale section.
> > >>>>>>
> > >>>>>> ## Documentation
> > >>>>>>
> > >>>>>> This proposal exists online as http://wiki.apache.org/
> > >>>>>> incubator/HeronProposal. Extensive documentation can be found on
> > >> github
> > >>>>> at
> > >>>>>> https://twitter.github.io/heron and the source code is well
> > >>>> documented.
> > >>>>>>
> > >>>>>> ## Source and Intellectual Property Submission Plan
> > >>>>>>
> > >>>>>> The Heron codebase is currently hosted on Github:
> > >>>>>> https://github.com/twitter/heron. During incubation, the codebase
> > >> will
> > >>>>> be
> > >>>>>> migrated to Apache infrastructure. The source code is already ASF
> > 2.0
> > >>>>>> licensed.
> > >>>>>>
> > >>>>>> ## External Dependencies
> > >>>>>>
> > >>>>>> All external libraries have ASF 2.0 compatible licenses except for
> > >>>>> pylint.
> > >>>>>> The pylint library is GPL licensed, but is only used for pre-build
> > >>>> Python
> > >>>>>> style checks and is neither bundled with, nor relied upon by, the
> > >> Heron
> > >>>>>> source or binary release artifacts.
> > >>>>>>
> > >>>>>> ## Cryptography
> > >>>>>>
> > >>>>>> Heron does not use any cryptography libraries.
> > >>>>>>
> > >>>>>> ## Required Resources
> > >>>>>>
> > >>>>>> ### Mailing lists
> > >>>>>>
> > >>>>>> private@heron.incubator.apache.org (with moderated subscriptions)
> > >>>>>> dev@heron.incubator.apache.org
> > >>>>>> commits@heron.incubator.apache.org
> > >>>>>> user@heron.incubator.apache.org
> > >>>>>>
> > >>>>>> ## Subversion Directory
> > >>>>>>
> > >>>>>> Git is the preferred source control system: git://
> > >> git.apache.org/heron
> > >>>>>>
> > >>>>>> ## Issue Tracking
> > >>>>>>
> > >>>>>> JIRA: Heron (HERON)
> > >>>>>>
> > >>>>>> ## Initial Committers
> > >>>>>>
> > >>>>>> * Andrew Jorgensen (andrew at andrewjorgensen dot com)
> > >>>>>> * Ashvin Agrawal (ashvin at apache dot org)*
> > >>>>>> * Avrilia Floratou (avrilia dot floratou at gmail dot com)
> > >>>>>> * Bill Graham (billgraham at apache dot org)*
> > >>>>>> * Brian Hatfield (bmhatfield at gmail dot com)
> > >>>>>> * Chris Kellogg (cckellogg at gmail dot com)
> > >>>>>> * Huijun Wu (huijun dot wu dot 2010 at gmail dot com)
> > >>>>>> * Karthik Ramasamy (karthik at gmail dot com)
> > >>>>>> * Maosong Fu (maosongfu at gmail dot com)
> > >>>>>> * Neng Lu(freeneng at gmail dot com)
> > >>>>>> * Runhang Li (obj dot runhang at gmail dot com)
> > >>>>>> * Sanjeev Kulkarni (sanjeevrk at gmail dot com)
> > >>>>>> * Supun Kamburugamuve (supun at apache dot org)*
> > >>>>>> * Thomas Sun (tom dot ssf at gmail dot com)
> > >>>>>> * Yaliang Wang (yaliang dot w dot wang at ieee dot org)
> > >>>>>>
> > >>>>>> ## Affiliations
> > >>>>>>
> > >>>>>> * Andrew Jorgensen (Google)
> > >>>>>> * Ashvin Agrawal (Microsoft)
> > >>>>>> * Avrilia Floratou (Microsoft)
> > >>>>>> * Bill Graham (Twitter)
> > >>>>>> * Brian Hatfield (Google)
> > >>>>>> * Chris Kellogg (Twitter)
> > >>>>>> * Huijun Wu (Twitter)
> > >>>>>> * Karthik Ramasamy (Streamlio)
> > >>>>>> * Maosong Fu (Twitter)
> > >>>>>> * Neng Lu (Twitter)
> > >>>>>> * Runhang Li (Twitter)
> > >>>>>> * Sanjeev Kulkarni (Streamlio)
> > >>>>>> * Supun Kamburugamuve (Indiana University)
> > >>>>>> * Thomas Sun (Twitter)
> > >>>>>> * Yaliang Wang (Twitter)
> > >>>>>>
> > >>>>>> ## Sponsors
> > >>>>>>
> > >>>>>> ### Champion
> > >>>>>>
> > >>>>>> * Julien Le Dem (julien at apache dot org)
> > >>>>>>
> > >>>>>> ### Nominated Mentors
> > >>>>>>
> > >>>>>> * Jake Farrell (jfarrell at apache dot org)
> > >>>>>> * Jacques Nadeau (jacques at apache dot org)
> > >>>>>> * Julien Le Dem (julien at apache dot org)
> > >>>>>>
> > >>>>>> ### Sponsoring Entity
> > >>>>>>
> > >>>>>> The Apache Incubator
> > >>>>>>
> > >>>>>> ### Footnotes
> > >>>>>>
> > >>>>>> 1 - Papers detailing Heron are available at
> > >> http://dl.acm.org/citation
> > >>>> .
> > >>>>>> cfm?id=2742788 and http://sites.computer.org/
> debull/A15dec/p15.pdf.
> > >>>>>> 2 - http://home.apache.org/phonebook.html?uid=billgraham
> > >>>>>> 3 - http://home.apache.org/phonebook.html?uid=ashvin
> > >>>>>> 4 - http://home.apache.org/phonebook.html?uid=supun
> > >>>>>
> > >>>>> ------------------------------------------------------------
> > ---------
> > >>>>> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> > >>>>> For additional commands, e-mail: general-help@incubator.apache.org
> > >>>>>
> > >>>>>
> > >>>>
> > >>>
> > >>>
> > >>>
> > >>> --
> > >>> Supun Kamburugamuve
> > >>> Member, Apache Software Foundation; http://www.apache.org
> > >>> E-mail: supun@apache.o <su...@gmail.com>rg;  Mobile: +1 812 219
> 2563
> > >>> <(812)%20219-2563>
> > >>
> > >>
> > >> ---------------------------------------------------------------------
> > >> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> > >> For additional commands, e-mail: general-help@incubator.apache.org
> > >>
> > >>
> > >
> > >
> > > --
> > > ~/William
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> > For additional commands, e-mail: general-help@incubator.apache.org
> >
> >
>

Re: [PROPOSAL] Heron

["P. Taylor Goetz" <pt...@gmail.com>]

Thanks for the clarification Bill!

-Taylor


> On Jun 15, 2017, at 1:24 PM, Bill Graham <bi...@gmail.com> wrote:
> 
> Hi Taylor,
> 
> The Heron team engaged with members of the Apache Storm community through
> private channels before the project was made available as open source. We
> recognize this is not the ideal approach and going forward we will use more
> collaborative methods as we progress and grow the Heron community.
> 
> One of our goals during incubation will be to use open forums of
> communication, like the Apache mailing lists, and work to foster a truly
> collaborative environment for both Apache Storm and Heron community members
> to work within together.
> 
> The Fabric team at Google uses Heron extensively.
> 
> thanks,
> Bill
> 
> On Thu, Jun 15, 2017 at 10:42 AM, Debo Dutta (dedutta) <de...@cisco.com>
> wrote:
> 
>> Am happy to help too!
>> 
>> Thx
>> Debo
>> 
>> Sent from my iPhone
>> 
>>> On Jun 14, 2017, at 8:05 PM, William Markito Oliveira <
>> william.markito@gmail.com> wrote:
>>> 
>>> Howdy!
>>> 
>>> If Heron is looking for some help around incubation process, I'd love to
>>> help while Geode experience is still fresh in my mind and given that
>> it's a
>>> project/space that I do have interest. Since I'm not an ASF member, I
>> don't
>>> think I can offer to be a mentor, but can probably still help and
>>> participate on the process.
>>> 
>>> Thanks!
>>> 
>>>> On Wed, Jun 14, 2017 at 7:54 PM, P. Taylor Goetz <pt...@gmail.com>
>> wrote:
>>>> 
>>>> Hi Bill/Supun,
>>>> 
>>>> Sorry for not being a little more clear. I was asking more about how the
>>>> Heron community would seek to engage with Storm community at the
>>>> *community* level as opposed to the technical level (i.e. “Community
>> over
>>>> Code”).
>>>> 
>>>> I’ve been asked by many why this has never happened, and have always
>>>> struggled to answer. Maybe you could help answer that question as well
>> as
>>>> if and how that might change if Heron were to incubate.
>>>> 
>>>> Another quick question: The proposal mentions Heron being used in
>>>> production at Google, but some Google employees I recently spoke to
>> seemed
>>>> to contradict that. Could you explain? Note that’s nothing that would
>>>> preclude the project from incubating, I’m just curious.
>>>> 
>>>> -Taylor
>>>> 
>>>>> On Jun 14, 2017, at 7:35 AM, Supun Kamburugamuve <su...@gmail.com>
>>>> wrote:
>>>>> 
>>>>> Hi Taylor,
>>>>> 
>>>>> For me, one of the interesting differences between Heron and Storm is
>> the
>>>>> execution model. Storm uses a shared memory model while Heron uses a
>>>>> process based model. It will be interesting to see how these two
>> evolve.
>>>>> 
>>>>> Thanks,
>>>>> Supun..
>>>>> 
>>>>> On Mon, Jun 12, 2017 at 4:15 PM, Bill Graham <bi...@gmail.com>
>>>> wrote:
>>>>> 
>>>>>> Hi Taylor,
>>>>>> 
>>>>>> Thanks for the mentor offer, we'd be glad to have your help.
>>>>>> 
>>>>>> I think the best place for collaboration would be around the evolution
>>>> of
>>>>>> the API. In addition we plan to look more into DSL solutions which we
>>>> could
>>>>>> potentially collaborate on. This could be Trident, or Beam or
>> something
>>>>>> else, but there could be synergies for future development here.
>>>>>> 
>>>>>> thanks,
>>>>>> Bill
>>>>>> 
>>>>>> On Fri, Jun 9, 2017 at 8:53 PM, P. Taylor Goetz <pt...@gmail.com>
>>>> wrote:
>>>>>> 
>>>>>>> Hi Bill,
>>>>>>> 
>>>>>>> Could you comment on how/if the Heron community would be willing to
>>>> work
>>>>>>> with the Storm community? I've seen a number of new features in Storm
>>>>>> being
>>>>>>> ported to Heron, but I have yet to see any attempt by the Heron
>>>> community
>>>>>>> to engage with the Apache Storm community.
>>>>>>> 
>>>>>>> I don't think it would be too far off to say that the relationship
>>>>>> between
>>>>>>> Heron and Apache Storm has been somewhat adversarial. The pre- and
>>>>>>> post-open sourcing marketing around Heron seemed, at least to me,
>>>>>> somewhat
>>>>>>> aggressively negative toward Storm.
>>>>>>> 
>>>>>>> As a peer to Apache Storm, how would the proposed "Apache Heron"
>>>>>> community
>>>>>>> work to collaborate with the Storm community? If Heron is adopting
>> API
>>>>>>> changes in Storm, then it seems there is an opportunity for
>>>>>> collaboration.
>>>>>>> 
>>>>>>> Don't take any of this as an objection to incubating the project. I
>>>> would
>>>>>>> support it. I would also be willing to be a mentor, if you would
>>>> consider
>>>>>>> taking on another.
>>>>>>> 
>>>>>>> -Taylor
>>>>>>> 
>>>>>>>> On Jun 8, 2017, at 1:23 PM, Bill Graham <bi...@gmail.com>
>> wrote:
>>>>>>>> 
>>>>>>>> Dear Apache Incubator Community,
>>>>>>>> 
>>>>>>>> We are excited to share our proposal for discussion and feedback
>>>>>>>> for entering Apache Incubation. Heron is a real-time, distributed,
>>>>>>>> fault-tolerant stream processing engine.
>>>>>>>> 
>>>>>>>> Our proposal can be found at https://wiki.apache.org/
>>>>>>> incubator/HeronProposal
>>>>>>>> and is included below.
>>>>>>>> 
>>>>>>>> 
>>>>>>>> Thank you,
>>>>>>>> 
>>>>>>>> Bill Graham on behalf of the Heron developers
>>>>>>>> 
>>>>>>>> 
>>>>>>>> # Heron Proposal
>>>>>>>> 
>>>>>>>> ## Abstract
>>>>>>>> Heron is a real-time, distributed, fault-tolerant stream processing
>>>>>>> engine
>>>>>>>> initially developed by Twitter.
>>>>>>>> 
>>>>>>>> ## Proposal
>>>>>>>> 
>>>>>>>> Heron is a real-time stream processing engine built for high
>>>>>> performance,
>>>>>>>> ease of manageability, performance predictability and developer
>>>>>>>> productivity[1]. We wish to develop a community around Heron to
>>>>>> increase
>>>>>>>> contributions and see Heron thrive in an open forum.
>>>>>>>> 
>>>>>>>> ## Background
>>>>>>>> 
>>>>>>>> Heron provides the ability for developers to compose directed
>> acyclic
>>>>>>>> graphs (DAGs) of real-time query execution logic (i.e. a topology)
>> and
>>>>>>>> submit the topology to execute on a pluggable job scheduling system
>>>>>>> (e.g.,
>>>>>>>> Apache Aurora, YARN, Marathon, etc). Users can employ either the
>>>> native
>>>>>>>> Heron API or the Apache Storm API to develop the topology. Heron
>>>>>> supports
>>>>>>>> the Storm API for ease of migration, but beyond that Heron’s
>>>>>> architecture
>>>>>>>> differs considerably from Storm’s.
>>>>>>>> 
>>>>>>>> Users submit a topology to the scheduler using the Heron client,
>> which
>>>>>>> uses
>>>>>>>> the Heron binary libraries to deploy all daemons required to run and
>>>>>>> manage
>>>>>>>> the topology. The topology therefore has no reliance on centrally
>>>>>> managed
>>>>>>>> Heron services, only on a generic job scheduling system, which lends
>>>>>>> itself
>>>>>>>> well to be run on top of Apache Aurora/Mesos or Apache Hadoop/YARN
>>>>>> (among
>>>>>>>> others).
>>>>>>>> 
>>>>>>>> The scheduler runs each topology as a job consisting of multiple
>>>>>>>> containers. One of the containers runs the topology master,
>>>> responsible
>>>>>>> for
>>>>>>>> managing the topology. The remaining containers each runs a stream
>>>>>>> manager
>>>>>>>> responsible for data routing, a metrics manager that collects and
>>>>>> reports
>>>>>>>> various metrics and a number of processes called Heron instances
>> which
>>>>>>> run
>>>>>>>> the user-defined logic on the stream of tuples. Parallelism is
>>>> achieved
>>>>>>> via
>>>>>>>> process-based isolation of Heron instances, which provides
>> predictable
>>>>>>>> performance while simplifying debugging. The containers are
>> allocated
>>>>>> and
>>>>>>>> managed by the scheduler framework based on resource availability of
>>>>>>> nodes
>>>>>>>> in the cluster. The metadata for the topology, such as the physical
>>>>>> plan
>>>>>>>> and execution details, are stored in the pluggable Heron State
>> Manager
>>>>>>>> (e.g. Apache ZooKeeper).
>>>>>>>> 
>>>>>>>> ## Rationale
>>>>>>>> 
>>>>>>>> Heron is a general-purpose, modular and extensible platform that can
>>>> be
>>>>>>>> leveraged to support common, real-time analytics use cases. There is
>>>> an
>>>>>>>> increasing demand for open-source, scalable real-time analytics
>>>>>> systems.
>>>>>>> We
>>>>>>>> believe that Heron can be leveraged by other organizations to build
>>>>>>>> streaming applications that can benefit from its robustness, high
>>>>>>>> performance, adaptability to cloud environments and ease of use.
>>>>>>> Moreover,
>>>>>>>> we hope that open-sourcing Heron will help to further evolve the
>>>>>>> technology
>>>>>>>> as the project attracts contributors with diverse backgrounds and
>>>> areas
>>>>>>> of
>>>>>>>> expertise.
>>>>>>>> 
>>>>>>>> We believe the Apache foundation is a great fit as the long-term
>> home
>>>>>> for
>>>>>>>> Heron, as it provides an established process for community-driven
>>>>>>>> development and decision making by consensus. This is exactly the
>>>> model
>>>>>>> we
>>>>>>>> want for future Heron development.
>>>>>>>> 
>>>>>>>> ## Initial Goals
>>>>>>>> 
>>>>>>>> * Move the existing codebase, website, documentation, and mailing
>>>> lists
>>>>>>> to
>>>>>>>> Apache-hosted infrastructure.
>>>>>>>> * Integrate with the Apache development process.
>>>>>>>> * Ensure all dependencies are compliant with Apache License version
>>>>>> 2.0.
>>>>>>>> * Incrementally develop and release per Apache guidelines.
>>>>>>>> 
>>>>>>>> ## Current Status
>>>>>>>> 
>>>>>>>> Heron is a stable project used in production at Twitter since 2014
>> and
>>>>>>> open
>>>>>>>> sourced under the ASL v2 license in 2016. The Heron source code is
>>>>>>>> currently hosted at github.com (https://github.com/twitter/heron),
>>>>>> which
>>>>>>>> will seed the Apache git repository.
>>>>>>>> 
>>>>>>>> ### Meritocracy
>>>>>>>> 
>>>>>>>> By submitting this incubator proposal, we’re expressing our intent
>> to
>>>>>>> build
>>>>>>>> a diverse developer community around Heron that will conduct itself
>>>>>>>> according to The Apache Way and use a meritocratic means of building
>>>>>> it's
>>>>>>>> committer base. Several companies and universities have already
>>>>>> expressed
>>>>>>>> interest in and contributed to Heron. Our goal is to grow the Heron
>>>>>>>> community by encouraging open communication, contribution and
>>>>>>> participation
>>>>>>>> of all types, and ensuring that contributors are recognized
>>>>>>> appropriately.
>>>>>>>> 
>>>>>>>> ### Community
>>>>>>>> 
>>>>>>>> Heron is currently being used by Twitter, Google, Machine Zone and
>>>>>>>> ndustrial.io and has received significant contributions by
>> Microsoft
>>>>>> and
>>>>>>>> Streamlio. By bringing Heron into the Apache ecosystem, we believe
>> we
>>>>>> can
>>>>>>>> attract even more developers who are interested in creating
>> real-time
>>>>>>>> systems to build the project's contributor base.
>>>>>>>> 
>>>>>>>> ### Core Developers
>>>>>>>> 
>>>>>>>> Current core developers are engineers from Twitter, Google,
>> Microsoft
>>>>>> and
>>>>>>>> Streamlio.
>>>>>>>> 
>>>>>>>> ### Alignment
>>>>>>>> 
>>>>>>>> Heron utilizes a number of Apache technologies. Heron leverages
>> Apache
>>>>>>>> ZooKeeper for coordination and has scheduler implementations to
>>>>>> integrate
>>>>>>>> with Apache Mesos, Apache Aurora and Apache Hadoop's YARN (via
>> Apache
>>>>>>> REEF)
>>>>>>>> as well as spout implementations to integrate with Apache Kafka and
>>>>>>> metrics
>>>>>>>> implementations to integrate with Scribe. Heron also implements the
>>>>>>> Apache
>>>>>>>> Storm user-level API, which allows topologies written against Storm
>> to
>>>>>>> run
>>>>>>>> in Heron. We believe that having Heron at Apache will help further
>> the
>>>>>>>> growth of the streaming compute community, as well as encourage
>>>>>>> cooperation
>>>>>>>> and developer cross pollination with other Apache projects.
>>>>>>>> 
>>>>>>>> ## Known Risks
>>>>>>>> 
>>>>>>>> ### Orphaned Products
>>>>>>>> 
>>>>>>>> The risk of the Heron project being abandoned is minimal. It is used
>>>> in
>>>>>>>> production at Twitter and Google and other companies are evaluating
>> or
>>>>>>>> adopting it for production use.
>>>>>>>> 
>>>>>>>> ### Inexperience with Open Source
>>>>>>>> 
>>>>>>>> All of the core contributors to the project have considerable
>>>>>> experience
>>>>>>>> with open source software development. Bill Graham[2], Ashvin
>>>>>> Agrawal[3]
>>>>>>>> and Supun Kamburugamuve[4], committers on the project, are PMCs on
>>>>>> other
>>>>>>>> Apache projects and Bill and Ashvin have gone through the Apache
>>>>>>> incubator
>>>>>>>> process. Twitter has already donated numerous projects to the ASF
>>>>>> (e.g.,
>>>>>>>> Apache Mesos, Apache Aurora, Apache Parquet). We also plan to be
>>>>>> mentored
>>>>>>>> by experienced ASF members that can help with any roadblocks.
>>>>>>>> 
>>>>>>>> ### Homogenous Developers
>>>>>>>> 
>>>>>>>> Initial committers come from 5 separate organizations. Our intention
>>>> is
>>>>>>>> increase the diversity of contributing developers and their
>>>>>> affiliations.
>>>>>>>> To date github contributions have come from approximately 50
>>>>>> contributors
>>>>>>>> from outside the Twitter team.
>>>>>>>> 
>>>>>>>> ### Reliance on Salaried Developers
>>>>>>>> 
>>>>>>>> It is expected that Heron development will occur on both salaried
>> time
>>>>>>> and
>>>>>>>> on volunteer time. The majority of initial committers are paid by
>>>> their
>>>>>>>> employers to contribute to this project. We are committed to
>>>> recruiting
>>>>>>>> additional committers from other organizations as well as
>> non-salaried
>>>>>>>> committers to join project.
>>>>>>>> 
>>>>>>>> ### Relationships with Other Apache Products
>>>>>>>> 
>>>>>>>> As mentioned in the Alignment section, Heron implements the Apache
>>>>>> Storm
>>>>>>>> API and integrates with multiple Apache schedulers (Apache Mesos,
>>>>>> Apache
>>>>>>>> Aurora and Apache Hadoop's YARN) as well as Apache ZooKeeper and
>>>> Apache
>>>>>>>> Thrift.
>>>>>>>> 
>>>>>>>> ### An Excessive Fascination with the Apache Brand
>>>>>>>> 
>>>>>>>> Heron's popularity is growing in the streaming compute space and we
>>>> are
>>>>>>>> long time supporters of the Apache brand. This proposal is not for
>> the
>>>>>>>> purpose of generating publicity through. Rather, the primary
>> benefits
>>>>>> to
>>>>>>>> joining Apache are those of community building and open decision
>>>> making
>>>>>>>> outlined in the Rationale section.
>>>>>>>> 
>>>>>>>> ## Documentation
>>>>>>>> 
>>>>>>>> This proposal exists online as http://wiki.apache.org/
>>>>>>>> incubator/HeronProposal. Extensive documentation can be found on
>>>> github
>>>>>>> at
>>>>>>>> https://twitter.github.io/heron and the source code is well
>>>>>> documented.
>>>>>>>> 
>>>>>>>> ## Source and Intellectual Property Submission Plan
>>>>>>>> 
>>>>>>>> The Heron codebase is currently hosted on Github:
>>>>>>>> https://github.com/twitter/heron. During incubation, the codebase
>>>> will
>>>>>>> be
>>>>>>>> migrated to Apache infrastructure. The source code is already ASF
>> 2.0
>>>>>>>> licensed.
>>>>>>>> 
>>>>>>>> ## External Dependencies
>>>>>>>> 
>>>>>>>> All external libraries have ASF 2.0 compatible licenses except for
>>>>>>> pylint.
>>>>>>>> The pylint library is GPL licensed, but is only used for pre-build
>>>>>> Python
>>>>>>>> style checks and is neither bundled with, nor relied upon by, the
>>>> Heron
>>>>>>>> source or binary release artifacts.
>>>>>>>> 
>>>>>>>> ## Cryptography
>>>>>>>> 
>>>>>>>> Heron does not use any cryptography libraries.
>>>>>>>> 
>>>>>>>> ## Required Resources
>>>>>>>> 
>>>>>>>> ### Mailing lists
>>>>>>>> 
>>>>>>>> private@heron.incubator.apache.org (with moderated subscriptions)
>>>>>>>> dev@heron.incubator.apache.org
>>>>>>>> commits@heron.incubator.apache.org
>>>>>>>> user@heron.incubator.apache.org
>>>>>>>> 
>>>>>>>> ## Subversion Directory
>>>>>>>> 
>>>>>>>> Git is the preferred source control system: git://
>>>> git.apache.org/heron
>>>>>>>> 
>>>>>>>> ## Issue Tracking
>>>>>>>> 
>>>>>>>> JIRA: Heron (HERON)
>>>>>>>> 
>>>>>>>> ## Initial Committers
>>>>>>>> 
>>>>>>>> * Andrew Jorgensen (andrew at andrewjorgensen dot com)
>>>>>>>> * Ashvin Agrawal (ashvin at apache dot org)*
>>>>>>>> * Avrilia Floratou (avrilia dot floratou at gmail dot com)
>>>>>>>> * Bill Graham (billgraham at apache dot org)*
>>>>>>>> * Brian Hatfield (bmhatfield at gmail dot com)
>>>>>>>> * Chris Kellogg (cckellogg at gmail dot com)
>>>>>>>> * Huijun Wu (huijun dot wu dot 2010 at gmail dot com)
>>>>>>>> * Karthik Ramasamy (karthik at gmail dot com)
>>>>>>>> * Maosong Fu (maosongfu at gmail dot com)
>>>>>>>> * Neng Lu(freeneng at gmail dot com)
>>>>>>>> * Runhang Li (obj dot runhang at gmail dot com)
>>>>>>>> * Sanjeev Kulkarni (sanjeevrk at gmail dot com)
>>>>>>>> * Supun Kamburugamuve (supun at apache dot org)*
>>>>>>>> * Thomas Sun (tom dot ssf at gmail dot com)
>>>>>>>> * Yaliang Wang (yaliang dot w dot wang at ieee dot org)
>>>>>>>> 
>>>>>>>> ## Affiliations
>>>>>>>> 
>>>>>>>> * Andrew Jorgensen (Google)
>>>>>>>> * Ashvin Agrawal (Microsoft)
>>>>>>>> * Avrilia Floratou (Microsoft)
>>>>>>>> * Bill Graham (Twitter)
>>>>>>>> * Brian Hatfield (Google)
>>>>>>>> * Chris Kellogg (Twitter)
>>>>>>>> * Huijun Wu (Twitter)
>>>>>>>> * Karthik Ramasamy (Streamlio)
>>>>>>>> * Maosong Fu (Twitter)
>>>>>>>> * Neng Lu (Twitter)
>>>>>>>> * Runhang Li (Twitter)
>>>>>>>> * Sanjeev Kulkarni (Streamlio)
>>>>>>>> * Supun Kamburugamuve (Indiana University)
>>>>>>>> * Thomas Sun (Twitter)
>>>>>>>> * Yaliang Wang (Twitter)
>>>>>>>> 
>>>>>>>> ## Sponsors
>>>>>>>> 
>>>>>>>> ### Champion
>>>>>>>> 
>>>>>>>> * Julien Le Dem (julien at apache dot org)
>>>>>>>> 
>>>>>>>> ### Nominated Mentors
>>>>>>>> 
>>>>>>>> * Jake Farrell (jfarrell at apache dot org)
>>>>>>>> * Jacques Nadeau (jacques at apache dot org)
>>>>>>>> * Julien Le Dem (julien at apache dot org)
>>>>>>>> 
>>>>>>>> ### Sponsoring Entity
>>>>>>>> 
>>>>>>>> The Apache Incubator
>>>>>>>> 
>>>>>>>> ### Footnotes
>>>>>>>> 
>>>>>>>> 1 - Papers detailing Heron are available at
>>>> http://dl.acm.org/citation
>>>>>> .
>>>>>>>> cfm?id=2742788 and http://sites.computer.org/debull/A15dec/p15.pdf.
>>>>>>>> 2 - http://home.apache.org/phonebook.html?uid=billgraham
>>>>>>>> 3 - http://home.apache.org/phonebook.html?uid=ashvin
>>>>>>>> 4 - http://home.apache.org/phonebook.html?uid=supun
>>>>>>> 
>>>>>>> ------------------------------------------------------------
>> ---------
>>>>>>> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
>>>>>>> For additional commands, e-mail: general-help@incubator.apache.org
>>>>>>> 
>>>>>>> 
>>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> --
>>>>> Supun Kamburugamuve
>>>>> Member, Apache Software Foundation; http://www.apache.org
>>>>> E-mail: supun@apache.o <su...@gmail.com>rg;  Mobile: +1 812 219 2563
>>>>> <(812)%20219-2563>
>>>> 
>>>> 
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
>>>> For additional commands, e-mail: general-help@incubator.apache.org
>>>> 
>>>> 
>>> 
>>> 
>>> --
>>> ~/William
>> 
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
>> For additional commands, e-mail: general-help@incubator.apache.org
>> 
>> 


---------------------------------------------------------------------
To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
For additional commands, e-mail: general-help@incubator.apache.org

Re: [PROPOSAL] Heron

[Bill Graham <bi...@gmail.com>]

Hi Taylor,

The Heron team engaged with members of the Apache Storm community through
private channels before the project was made available as open source. We
recognize this is not the ideal approach and going forward we will use more
collaborative methods as we progress and grow the Heron community.

One of our goals during incubation will be to use open forums of
communication, like the Apache mailing lists, and work to foster a truly
collaborative environment for both Apache Storm and Heron community members
to work within together.

The Fabric team at Google uses Heron extensively.

thanks,
Bill

On Thu, Jun 15, 2017 at 10:42 AM, Debo Dutta (dedutta) <de...@cisco.com>
wrote:

> Am happy to help too!
>
> Thx
> Debo
>
> Sent from my iPhone
>
> > On Jun 14, 2017, at 8:05 PM, William Markito Oliveira <
> william.markito@gmail.com> wrote:
> >
> > Howdy!
> >
> > If Heron is looking for some help around incubation process, I'd love to
> > help while Geode experience is still fresh in my mind and given that
> it's a
> > project/space that I do have interest. Since I'm not an ASF member, I
> don't
> > think I can offer to be a mentor, but can probably still help and
> > participate on the process.
> >
> > Thanks!
> >
> >> On Wed, Jun 14, 2017 at 7:54 PM, P. Taylor Goetz <pt...@gmail.com>
> wrote:
> >>
> >> Hi Bill/Supun,
> >>
> >> Sorry for not being a little more clear. I was asking more about how the
> >> Heron community would seek to engage with Storm community at the
> >> *community* level as opposed to the technical level (i.e. “Community
> over
> >> Code”).
> >>
> >> I’ve been asked by many why this has never happened, and have always
> >> struggled to answer. Maybe you could help answer that question as well
> as
> >> if and how that might change if Heron were to incubate.
> >>
> >> Another quick question: The proposal mentions Heron being used in
> >> production at Google, but some Google employees I recently spoke to
> seemed
> >> to contradict that. Could you explain? Note that’s nothing that would
> >> preclude the project from incubating, I’m just curious.
> >>
> >> -Taylor
> >>
> >>> On Jun 14, 2017, at 7:35 AM, Supun Kamburugamuve <su...@gmail.com>
> >> wrote:
> >>>
> >>> Hi Taylor,
> >>>
> >>> For me, one of the interesting differences between Heron and Storm is
> the
> >>> execution model. Storm uses a shared memory model while Heron uses a
> >>> process based model. It will be interesting to see how these two
> evolve.
> >>>
> >>> Thanks,
> >>> Supun..
> >>>
> >>> On Mon, Jun 12, 2017 at 4:15 PM, Bill Graham <bi...@gmail.com>
> >> wrote:
> >>>
> >>>> Hi Taylor,
> >>>>
> >>>> Thanks for the mentor offer, we'd be glad to have your help.
> >>>>
> >>>> I think the best place for collaboration would be around the evolution
> >> of
> >>>> the API. In addition we plan to look more into DSL solutions which we
> >> could
> >>>> potentially collaborate on. This could be Trident, or Beam or
> something
> >>>> else, but there could be synergies for future development here.
> >>>>
> >>>> thanks,
> >>>> Bill
> >>>>
> >>>> On Fri, Jun 9, 2017 at 8:53 PM, P. Taylor Goetz <pt...@gmail.com>
> >> wrote:
> >>>>
> >>>>> Hi Bill,
> >>>>>
> >>>>> Could you comment on how/if the Heron community would be willing to
> >> work
> >>>>> with the Storm community? I've seen a number of new features in Storm
> >>>> being
> >>>>> ported to Heron, but I have yet to see any attempt by the Heron
> >> community
> >>>>> to engage with the Apache Storm community.
> >>>>>
> >>>>> I don't think it would be too far off to say that the relationship
> >>>> between
> >>>>> Heron and Apache Storm has been somewhat adversarial. The pre- and
> >>>>> post-open sourcing marketing around Heron seemed, at least to me,
> >>>> somewhat
> >>>>> aggressively negative toward Storm.
> >>>>>
> >>>>> As a peer to Apache Storm, how would the proposed "Apache Heron"
> >>>> community
> >>>>> work to collaborate with the Storm community? If Heron is adopting
> API
> >>>>> changes in Storm, then it seems there is an opportunity for
> >>>> collaboration.
> >>>>>
> >>>>> Don't take any of this as an objection to incubating the project. I
> >> would
> >>>>> support it. I would also be willing to be a mentor, if you would
> >> consider
> >>>>> taking on another.
> >>>>>
> >>>>> -Taylor
> >>>>>
> >>>>>> On Jun 8, 2017, at 1:23 PM, Bill Graham <bi...@gmail.com>
> wrote:
> >>>>>>
> >>>>>> Dear Apache Incubator Community,
> >>>>>>
> >>>>>> We are excited to share our proposal for discussion and feedback
> >>>>>> for entering Apache Incubation. Heron is a real-time, distributed,
> >>>>>> fault-tolerant stream processing engine.
> >>>>>>
> >>>>>> Our proposal can be found at https://wiki.apache.org/
> >>>>> incubator/HeronProposal
> >>>>>> and is included below.
> >>>>>>
> >>>>>>
> >>>>>> Thank you,
> >>>>>>
> >>>>>> Bill Graham on behalf of the Heron developers
> >>>>>>
> >>>>>>
> >>>>>> # Heron Proposal
> >>>>>>
> >>>>>> ## Abstract
> >>>>>> Heron is a real-time, distributed, fault-tolerant stream processing
> >>>>> engine
> >>>>>> initially developed by Twitter.
> >>>>>>
> >>>>>> ## Proposal
> >>>>>>
> >>>>>> Heron is a real-time stream processing engine built for high
> >>>> performance,
> >>>>>> ease of manageability, performance predictability and developer
> >>>>>> productivity[1]. We wish to develop a community around Heron to
> >>>> increase
> >>>>>> contributions and see Heron thrive in an open forum.
> >>>>>>
> >>>>>> ## Background
> >>>>>>
> >>>>>> Heron provides the ability for developers to compose directed
> acyclic
> >>>>>> graphs (DAGs) of real-time query execution logic (i.e. a topology)
> and
> >>>>>> submit the topology to execute on a pluggable job scheduling system
> >>>>> (e.g.,
> >>>>>> Apache Aurora, YARN, Marathon, etc). Users can employ either the
> >> native
> >>>>>> Heron API or the Apache Storm API to develop the topology. Heron
> >>>> supports
> >>>>>> the Storm API for ease of migration, but beyond that Heron’s
> >>>> architecture
> >>>>>> differs considerably from Storm’s.
> >>>>>>
> >>>>>> Users submit a topology to the scheduler using the Heron client,
> which
> >>>>> uses
> >>>>>> the Heron binary libraries to deploy all daemons required to run and
> >>>>> manage
> >>>>>> the topology. The topology therefore has no reliance on centrally
> >>>> managed
> >>>>>> Heron services, only on a generic job scheduling system, which lends
> >>>>> itself
> >>>>>> well to be run on top of Apache Aurora/Mesos or Apache Hadoop/YARN
> >>>> (among
> >>>>>> others).
> >>>>>>
> >>>>>> The scheduler runs each topology as a job consisting of multiple
> >>>>>> containers. One of the containers runs the topology master,
> >> responsible
> >>>>> for
> >>>>>> managing the topology. The remaining containers each runs a stream
> >>>>> manager
> >>>>>> responsible for data routing, a metrics manager that collects and
> >>>> reports
> >>>>>> various metrics and a number of processes called Heron instances
> which
> >>>>> run
> >>>>>> the user-defined logic on the stream of tuples. Parallelism is
> >> achieved
> >>>>> via
> >>>>>> process-based isolation of Heron instances, which provides
> predictable
> >>>>>> performance while simplifying debugging. The containers are
> allocated
> >>>> and
> >>>>>> managed by the scheduler framework based on resource availability of
> >>>>> nodes
> >>>>>> in the cluster. The metadata for the topology, such as the physical
> >>>> plan
> >>>>>> and execution details, are stored in the pluggable Heron State
> Manager
> >>>>>> (e.g. Apache ZooKeeper).
> >>>>>>
> >>>>>> ## Rationale
> >>>>>>
> >>>>>> Heron is a general-purpose, modular and extensible platform that can
> >> be
> >>>>>> leveraged to support common, real-time analytics use cases. There is
> >> an
> >>>>>> increasing demand for open-source, scalable real-time analytics
> >>>> systems.
> >>>>> We
> >>>>>> believe that Heron can be leveraged by other organizations to build
> >>>>>> streaming applications that can benefit from its robustness, high
> >>>>>> performance, adaptability to cloud environments and ease of use.
> >>>>> Moreover,
> >>>>>> we hope that open-sourcing Heron will help to further evolve the
> >>>>> technology
> >>>>>> as the project attracts contributors with diverse backgrounds and
> >> areas
> >>>>> of
> >>>>>> expertise.
> >>>>>>
> >>>>>> We believe the Apache foundation is a great fit as the long-term
> home
> >>>> for
> >>>>>> Heron, as it provides an established process for community-driven
> >>>>>> development and decision making by consensus. This is exactly the
> >> model
> >>>>> we
> >>>>>> want for future Heron development.
> >>>>>>
> >>>>>> ## Initial Goals
> >>>>>>
> >>>>>> * Move the existing codebase, website, documentation, and mailing
> >> lists
> >>>>> to
> >>>>>> Apache-hosted infrastructure.
> >>>>>> * Integrate with the Apache development process.
> >>>>>> * Ensure all dependencies are compliant with Apache License version
> >>>> 2.0.
> >>>>>> * Incrementally develop and release per Apache guidelines.
> >>>>>>
> >>>>>> ## Current Status
> >>>>>>
> >>>>>> Heron is a stable project used in production at Twitter since 2014
> and
> >>>>> open
> >>>>>> sourced under the ASL v2 license in 2016. The Heron source code is
> >>>>>> currently hosted at github.com (https://github.com/twitter/heron),
> >>>> which
> >>>>>> will seed the Apache git repository.
> >>>>>>
> >>>>>> ### Meritocracy
> >>>>>>
> >>>>>> By submitting this incubator proposal, we’re expressing our intent
> to
> >>>>> build
> >>>>>> a diverse developer community around Heron that will conduct itself
> >>>>>> according to The Apache Way and use a meritocratic means of building
> >>>> it's
> >>>>>> committer base. Several companies and universities have already
> >>>> expressed
> >>>>>> interest in and contributed to Heron. Our goal is to grow the Heron
> >>>>>> community by encouraging open communication, contribution and
> >>>>> participation
> >>>>>> of all types, and ensuring that contributors are recognized
> >>>>> appropriately.
> >>>>>>
> >>>>>> ### Community
> >>>>>>
> >>>>>> Heron is currently being used by Twitter, Google, Machine Zone and
> >>>>>> ndustrial.io and has received significant contributions by
> Microsoft
> >>>> and
> >>>>>> Streamlio. By bringing Heron into the Apache ecosystem, we believe
> we
> >>>> can
> >>>>>> attract even more developers who are interested in creating
> real-time
> >>>>>> systems to build the project's contributor base.
> >>>>>>
> >>>>>> ### Core Developers
> >>>>>>
> >>>>>> Current core developers are engineers from Twitter, Google,
> Microsoft
> >>>> and
> >>>>>> Streamlio.
> >>>>>>
> >>>>>> ### Alignment
> >>>>>>
> >>>>>> Heron utilizes a number of Apache technologies. Heron leverages
> Apache
> >>>>>> ZooKeeper for coordination and has scheduler implementations to
> >>>> integrate
> >>>>>> with Apache Mesos, Apache Aurora and Apache Hadoop's YARN (via
> Apache
> >>>>> REEF)
> >>>>>> as well as spout implementations to integrate with Apache Kafka and
> >>>>> metrics
> >>>>>> implementations to integrate with Scribe. Heron also implements the
> >>>>> Apache
> >>>>>> Storm user-level API, which allows topologies written against Storm
> to
> >>>>> run
> >>>>>> in Heron. We believe that having Heron at Apache will help further
> the
> >>>>>> growth of the streaming compute community, as well as encourage
> >>>>> cooperation
> >>>>>> and developer cross pollination with other Apache projects.
> >>>>>>
> >>>>>> ## Known Risks
> >>>>>>
> >>>>>> ### Orphaned Products
> >>>>>>
> >>>>>> The risk of the Heron project being abandoned is minimal. It is used
> >> in
> >>>>>> production at Twitter and Google and other companies are evaluating
> or
> >>>>>> adopting it for production use.
> >>>>>>
> >>>>>> ### Inexperience with Open Source
> >>>>>>
> >>>>>> All of the core contributors to the project have considerable
> >>>> experience
> >>>>>> with open source software development. Bill Graham[2], Ashvin
> >>>> Agrawal[3]
> >>>>>> and Supun Kamburugamuve[4], committers on the project, are PMCs on
> >>>> other
> >>>>>> Apache projects and Bill and Ashvin have gone through the Apache
> >>>>> incubator
> >>>>>> process. Twitter has already donated numerous projects to the ASF
> >>>> (e.g.,
> >>>>>> Apache Mesos, Apache Aurora, Apache Parquet). We also plan to be
> >>>> mentored
> >>>>>> by experienced ASF members that can help with any roadblocks.
> >>>>>>
> >>>>>> ### Homogenous Developers
> >>>>>>
> >>>>>> Initial committers come from 5 separate organizations. Our intention
> >> is
> >>>>>> increase the diversity of contributing developers and their
> >>>> affiliations.
> >>>>>> To date github contributions have come from approximately 50
> >>>> contributors
> >>>>>> from outside the Twitter team.
> >>>>>>
> >>>>>> ### Reliance on Salaried Developers
> >>>>>>
> >>>>>> It is expected that Heron development will occur on both salaried
> time
> >>>>> and
> >>>>>> on volunteer time. The majority of initial committers are paid by
> >> their
> >>>>>> employers to contribute to this project. We are committed to
> >> recruiting
> >>>>>> additional committers from other organizations as well as
> non-salaried
> >>>>>> committers to join project.
> >>>>>>
> >>>>>> ### Relationships with Other Apache Products
> >>>>>>
> >>>>>> As mentioned in the Alignment section, Heron implements the Apache
> >>>> Storm
> >>>>>> API and integrates with multiple Apache schedulers (Apache Mesos,
> >>>> Apache
> >>>>>> Aurora and Apache Hadoop's YARN) as well as Apache ZooKeeper and
> >> Apache
> >>>>>> Thrift.
> >>>>>>
> >>>>>> ### An Excessive Fascination with the Apache Brand
> >>>>>>
> >>>>>> Heron's popularity is growing in the streaming compute space and we
> >> are
> >>>>>> long time supporters of the Apache brand. This proposal is not for
> the
> >>>>>> purpose of generating publicity through. Rather, the primary
> benefits
> >>>> to
> >>>>>> joining Apache are those of community building and open decision
> >> making
> >>>>>> outlined in the Rationale section.
> >>>>>>
> >>>>>> ## Documentation
> >>>>>>
> >>>>>> This proposal exists online as http://wiki.apache.org/
> >>>>>> incubator/HeronProposal. Extensive documentation can be found on
> >> github
> >>>>> at
> >>>>>> https://twitter.github.io/heron and the source code is well
> >>>> documented.
> >>>>>>
> >>>>>> ## Source and Intellectual Property Submission Plan
> >>>>>>
> >>>>>> The Heron codebase is currently hosted on Github:
> >>>>>> https://github.com/twitter/heron. During incubation, the codebase
> >> will
> >>>>> be
> >>>>>> migrated to Apache infrastructure. The source code is already ASF
> 2.0
> >>>>>> licensed.
> >>>>>>
> >>>>>> ## External Dependencies
> >>>>>>
> >>>>>> All external libraries have ASF 2.0 compatible licenses except for
> >>>>> pylint.
> >>>>>> The pylint library is GPL licensed, but is only used for pre-build
> >>>> Python
> >>>>>> style checks and is neither bundled with, nor relied upon by, the
> >> Heron
> >>>>>> source or binary release artifacts.
> >>>>>>
> >>>>>> ## Cryptography
> >>>>>>
> >>>>>> Heron does not use any cryptography libraries.
> >>>>>>
> >>>>>> ## Required Resources
> >>>>>>
> >>>>>> ### Mailing lists
> >>>>>>
> >>>>>> private@heron.incubator.apache.org (with moderated subscriptions)
> >>>>>> dev@heron.incubator.apache.org
> >>>>>> commits@heron.incubator.apache.org
> >>>>>> user@heron.incubator.apache.org
> >>>>>>
> >>>>>> ## Subversion Directory
> >>>>>>
> >>>>>> Git is the preferred source control system: git://
> >> git.apache.org/heron
> >>>>>>
> >>>>>> ## Issue Tracking
> >>>>>>
> >>>>>> JIRA: Heron (HERON)
> >>>>>>
> >>>>>> ## Initial Committers
> >>>>>>
> >>>>>> * Andrew Jorgensen (andrew at andrewjorgensen dot com)
> >>>>>> * Ashvin Agrawal (ashvin at apache dot org)*
> >>>>>> * Avrilia Floratou (avrilia dot floratou at gmail dot com)
> >>>>>> * Bill Graham (billgraham at apache dot org)*
> >>>>>> * Brian Hatfield (bmhatfield at gmail dot com)
> >>>>>> * Chris Kellogg (cckellogg at gmail dot com)
> >>>>>> * Huijun Wu (huijun dot wu dot 2010 at gmail dot com)
> >>>>>> * Karthik Ramasamy (karthik at gmail dot com)
> >>>>>> * Maosong Fu (maosongfu at gmail dot com)
> >>>>>> * Neng Lu(freeneng at gmail dot com)
> >>>>>> * Runhang Li (obj dot runhang at gmail dot com)
> >>>>>> * Sanjeev Kulkarni (sanjeevrk at gmail dot com)
> >>>>>> * Supun Kamburugamuve (supun at apache dot org)*
> >>>>>> * Thomas Sun (tom dot ssf at gmail dot com)
> >>>>>> * Yaliang Wang (yaliang dot w dot wang at ieee dot org)
> >>>>>>
> >>>>>> ## Affiliations
> >>>>>>
> >>>>>> * Andrew Jorgensen (Google)
> >>>>>> * Ashvin Agrawal (Microsoft)
> >>>>>> * Avrilia Floratou (Microsoft)
> >>>>>> * Bill Graham (Twitter)
> >>>>>> * Brian Hatfield (Google)
> >>>>>> * Chris Kellogg (Twitter)
> >>>>>> * Huijun Wu (Twitter)
> >>>>>> * Karthik Ramasamy (Streamlio)
> >>>>>> * Maosong Fu (Twitter)
> >>>>>> * Neng Lu (Twitter)
> >>>>>> * Runhang Li (Twitter)
> >>>>>> * Sanjeev Kulkarni (Streamlio)
> >>>>>> * Supun Kamburugamuve (Indiana University)
> >>>>>> * Thomas Sun (Twitter)
> >>>>>> * Yaliang Wang (Twitter)
> >>>>>>
> >>>>>> ## Sponsors
> >>>>>>
> >>>>>> ### Champion
> >>>>>>
> >>>>>> * Julien Le Dem (julien at apache dot org)
> >>>>>>
> >>>>>> ### Nominated Mentors
> >>>>>>
> >>>>>> * Jake Farrell (jfarrell at apache dot org)
> >>>>>> * Jacques Nadeau (jacques at apache dot org)
> >>>>>> * Julien Le Dem (julien at apache dot org)
> >>>>>>
> >>>>>> ### Sponsoring Entity
> >>>>>>
> >>>>>> The Apache Incubator
> >>>>>>
> >>>>>> ### Footnotes
> >>>>>>
> >>>>>> 1 - Papers detailing Heron are available at
> >> http://dl.acm.org/citation
> >>>> .
> >>>>>> cfm?id=2742788 and http://sites.computer.org/debull/A15dec/p15.pdf.
> >>>>>> 2 - http://home.apache.org/phonebook.html?uid=billgraham
> >>>>>> 3 - http://home.apache.org/phonebook.html?uid=ashvin
> >>>>>> 4 - http://home.apache.org/phonebook.html?uid=supun
> >>>>>
> >>>>> ------------------------------------------------------------
> ---------
> >>>>> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> >>>>> For additional commands, e-mail: general-help@incubator.apache.org
> >>>>>
> >>>>>
> >>>>
> >>>
> >>>
> >>>
> >>> --
> >>> Supun Kamburugamuve
> >>> Member, Apache Software Foundation; http://www.apache.org
> >>> E-mail: supun@apache.o <su...@gmail.com>rg;  Mobile: +1 812 219 2563
> >>> <(812)%20219-2563>
> >>
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> >> For additional commands, e-mail: general-help@incubator.apache.org
> >>
> >>
> >
> >
> > --
> > ~/William
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> For additional commands, e-mail: general-help@incubator.apache.org
>
>

Re: [PROPOSAL] Heron

["Debo Dutta (dedutta)" <de...@cisco.com>]

Am happy to help too!

Thx 
Debo 

Sent from my iPhone

> On Jun 14, 2017, at 8:05 PM, William Markito Oliveira <wi...@gmail.com> wrote:
> 
> Howdy!
> 
> If Heron is looking for some help around incubation process, I'd love to
> help while Geode experience is still fresh in my mind and given that it's a
> project/space that I do have interest. Since I'm not an ASF member, I don't
> think I can offer to be a mentor, but can probably still help and
> participate on the process.
> 
> Thanks!
> 
>> On Wed, Jun 14, 2017 at 7:54 PM, P. Taylor Goetz <pt...@gmail.com> wrote:
>> 
>> Hi Bill/Supun,
>> 
>> Sorry for not being a little more clear. I was asking more about how the
>> Heron community would seek to engage with Storm community at the
>> *community* level as opposed to the technical level (i.e. “Community over
>> Code”).
>> 
>> I’ve been asked by many why this has never happened, and have always
>> struggled to answer. Maybe you could help answer that question as well as
>> if and how that might change if Heron were to incubate.
>> 
>> Another quick question: The proposal mentions Heron being used in
>> production at Google, but some Google employees I recently spoke to seemed
>> to contradict that. Could you explain? Note that’s nothing that would
>> preclude the project from incubating, I’m just curious.
>> 
>> -Taylor
>> 
>>> On Jun 14, 2017, at 7:35 AM, Supun Kamburugamuve <su...@gmail.com>
>> wrote:
>>> 
>>> Hi Taylor,
>>> 
>>> For me, one of the interesting differences between Heron and Storm is the
>>> execution model. Storm uses a shared memory model while Heron uses a
>>> process based model. It will be interesting to see how these two evolve.
>>> 
>>> Thanks,
>>> Supun..
>>> 
>>> On Mon, Jun 12, 2017 at 4:15 PM, Bill Graham <bi...@gmail.com>
>> wrote:
>>> 
>>>> Hi Taylor,
>>>> 
>>>> Thanks for the mentor offer, we'd be glad to have your help.
>>>> 
>>>> I think the best place for collaboration would be around the evolution
>> of
>>>> the API. In addition we plan to look more into DSL solutions which we
>> could
>>>> potentially collaborate on. This could be Trident, or Beam or something
>>>> else, but there could be synergies for future development here.
>>>> 
>>>> thanks,
>>>> Bill
>>>> 
>>>> On Fri, Jun 9, 2017 at 8:53 PM, P. Taylor Goetz <pt...@gmail.com>
>> wrote:
>>>> 
>>>>> Hi Bill,
>>>>> 
>>>>> Could you comment on how/if the Heron community would be willing to
>> work
>>>>> with the Storm community? I've seen a number of new features in Storm
>>>> being
>>>>> ported to Heron, but I have yet to see any attempt by the Heron
>> community
>>>>> to engage with the Apache Storm community.
>>>>> 
>>>>> I don't think it would be too far off to say that the relationship
>>>> between
>>>>> Heron and Apache Storm has been somewhat adversarial. The pre- and
>>>>> post-open sourcing marketing around Heron seemed, at least to me,
>>>> somewhat
>>>>> aggressively negative toward Storm.
>>>>> 
>>>>> As a peer to Apache Storm, how would the proposed "Apache Heron"
>>>> community
>>>>> work to collaborate with the Storm community? If Heron is adopting API
>>>>> changes in Storm, then it seems there is an opportunity for
>>>> collaboration.
>>>>> 
>>>>> Don't take any of this as an objection to incubating the project. I
>> would
>>>>> support it. I would also be willing to be a mentor, if you would
>> consider
>>>>> taking on another.
>>>>> 
>>>>> -Taylor
>>>>> 
>>>>>> On Jun 8, 2017, at 1:23 PM, Bill Graham <bi...@gmail.com> wrote:
>>>>>> 
>>>>>> Dear Apache Incubator Community,
>>>>>> 
>>>>>> We are excited to share our proposal for discussion and feedback
>>>>>> for entering Apache Incubation. Heron is a real-time, distributed,
>>>>>> fault-tolerant stream processing engine.
>>>>>> 
>>>>>> Our proposal can be found at https://wiki.apache.org/
>>>>> incubator/HeronProposal
>>>>>> and is included below.
>>>>>> 
>>>>>> 
>>>>>> Thank you,
>>>>>> 
>>>>>> Bill Graham on behalf of the Heron developers
>>>>>> 
>>>>>> 
>>>>>> # Heron Proposal
>>>>>> 
>>>>>> ## Abstract
>>>>>> Heron is a real-time, distributed, fault-tolerant stream processing
>>>>> engine
>>>>>> initially developed by Twitter.
>>>>>> 
>>>>>> ## Proposal
>>>>>> 
>>>>>> Heron is a real-time stream processing engine built for high
>>>> performance,
>>>>>> ease of manageability, performance predictability and developer
>>>>>> productivity[1]. We wish to develop a community around Heron to
>>>> increase
>>>>>> contributions and see Heron thrive in an open forum.
>>>>>> 
>>>>>> ## Background
>>>>>> 
>>>>>> Heron provides the ability for developers to compose directed acyclic
>>>>>> graphs (DAGs) of real-time query execution logic (i.e. a topology) and
>>>>>> submit the topology to execute on a pluggable job scheduling system
>>>>> (e.g.,
>>>>>> Apache Aurora, YARN, Marathon, etc). Users can employ either the
>> native
>>>>>> Heron API or the Apache Storm API to develop the topology. Heron
>>>> supports
>>>>>> the Storm API for ease of migration, but beyond that Heron’s
>>>> architecture
>>>>>> differs considerably from Storm’s.
>>>>>> 
>>>>>> Users submit a topology to the scheduler using the Heron client, which
>>>>> uses
>>>>>> the Heron binary libraries to deploy all daemons required to run and
>>>>> manage
>>>>>> the topology. The topology therefore has no reliance on centrally
>>>> managed
>>>>>> Heron services, only on a generic job scheduling system, which lends
>>>>> itself
>>>>>> well to be run on top of Apache Aurora/Mesos or Apache Hadoop/YARN
>>>> (among
>>>>>> others).
>>>>>> 
>>>>>> The scheduler runs each topology as a job consisting of multiple
>>>>>> containers. One of the containers runs the topology master,
>> responsible
>>>>> for
>>>>>> managing the topology. The remaining containers each runs a stream
>>>>> manager
>>>>>> responsible for data routing, a metrics manager that collects and
>>>> reports
>>>>>> various metrics and a number of processes called Heron instances which
>>>>> run
>>>>>> the user-defined logic on the stream of tuples. Parallelism is
>> achieved
>>>>> via
>>>>>> process-based isolation of Heron instances, which provides predictable
>>>>>> performance while simplifying debugging. The containers are allocated
>>>> and
>>>>>> managed by the scheduler framework based on resource availability of
>>>>> nodes
>>>>>> in the cluster. The metadata for the topology, such as the physical
>>>> plan
>>>>>> and execution details, are stored in the pluggable Heron State Manager
>>>>>> (e.g. Apache ZooKeeper).
>>>>>> 
>>>>>> ## Rationale
>>>>>> 
>>>>>> Heron is a general-purpose, modular and extensible platform that can
>> be
>>>>>> leveraged to support common, real-time analytics use cases. There is
>> an
>>>>>> increasing demand for open-source, scalable real-time analytics
>>>> systems.
>>>>> We
>>>>>> believe that Heron can be leveraged by other organizations to build
>>>>>> streaming applications that can benefit from its robustness, high
>>>>>> performance, adaptability to cloud environments and ease of use.
>>>>> Moreover,
>>>>>> we hope that open-sourcing Heron will help to further evolve the
>>>>> technology
>>>>>> as the project attracts contributors with diverse backgrounds and
>> areas
>>>>> of
>>>>>> expertise.
>>>>>> 
>>>>>> We believe the Apache foundation is a great fit as the long-term home
>>>> for
>>>>>> Heron, as it provides an established process for community-driven
>>>>>> development and decision making by consensus. This is exactly the
>> model
>>>>> we
>>>>>> want for future Heron development.
>>>>>> 
>>>>>> ## Initial Goals
>>>>>> 
>>>>>> * Move the existing codebase, website, documentation, and mailing
>> lists
>>>>> to
>>>>>> Apache-hosted infrastructure.
>>>>>> * Integrate with the Apache development process.
>>>>>> * Ensure all dependencies are compliant with Apache License version
>>>> 2.0.
>>>>>> * Incrementally develop and release per Apache guidelines.
>>>>>> 
>>>>>> ## Current Status
>>>>>> 
>>>>>> Heron is a stable project used in production at Twitter since 2014 and
>>>>> open
>>>>>> sourced under the ASL v2 license in 2016. The Heron source code is
>>>>>> currently hosted at github.com (https://github.com/twitter/heron),
>>>> which
>>>>>> will seed the Apache git repository.
>>>>>> 
>>>>>> ### Meritocracy
>>>>>> 
>>>>>> By submitting this incubator proposal, we’re expressing our intent to
>>>>> build
>>>>>> a diverse developer community around Heron that will conduct itself
>>>>>> according to The Apache Way and use a meritocratic means of building
>>>> it's
>>>>>> committer base. Several companies and universities have already
>>>> expressed
>>>>>> interest in and contributed to Heron. Our goal is to grow the Heron
>>>>>> community by encouraging open communication, contribution and
>>>>> participation
>>>>>> of all types, and ensuring that contributors are recognized
>>>>> appropriately.
>>>>>> 
>>>>>> ### Community
>>>>>> 
>>>>>> Heron is currently being used by Twitter, Google, Machine Zone and
>>>>>> ndustrial.io and has received significant contributions by Microsoft
>>>> and
>>>>>> Streamlio. By bringing Heron into the Apache ecosystem, we believe we
>>>> can
>>>>>> attract even more developers who are interested in creating real-time
>>>>>> systems to build the project's contributor base.
>>>>>> 
>>>>>> ### Core Developers
>>>>>> 
>>>>>> Current core developers are engineers from Twitter, Google, Microsoft
>>>> and
>>>>>> Streamlio.
>>>>>> 
>>>>>> ### Alignment
>>>>>> 
>>>>>> Heron utilizes a number of Apache technologies. Heron leverages Apache
>>>>>> ZooKeeper for coordination and has scheduler implementations to
>>>> integrate
>>>>>> with Apache Mesos, Apache Aurora and Apache Hadoop's YARN (via Apache
>>>>> REEF)
>>>>>> as well as spout implementations to integrate with Apache Kafka and
>>>>> metrics
>>>>>> implementations to integrate with Scribe. Heron also implements the
>>>>> Apache
>>>>>> Storm user-level API, which allows topologies written against Storm to
>>>>> run
>>>>>> in Heron. We believe that having Heron at Apache will help further the
>>>>>> growth of the streaming compute community, as well as encourage
>>>>> cooperation
>>>>>> and developer cross pollination with other Apache projects.
>>>>>> 
>>>>>> ## Known Risks
>>>>>> 
>>>>>> ### Orphaned Products
>>>>>> 
>>>>>> The risk of the Heron project being abandoned is minimal. It is used
>> in
>>>>>> production at Twitter and Google and other companies are evaluating or
>>>>>> adopting it for production use.
>>>>>> 
>>>>>> ### Inexperience with Open Source
>>>>>> 
>>>>>> All of the core contributors to the project have considerable
>>>> experience
>>>>>> with open source software development. Bill Graham[2], Ashvin
>>>> Agrawal[3]
>>>>>> and Supun Kamburugamuve[4], committers on the project, are PMCs on
>>>> other
>>>>>> Apache projects and Bill and Ashvin have gone through the Apache
>>>>> incubator
>>>>>> process. Twitter has already donated numerous projects to the ASF
>>>> (e.g.,
>>>>>> Apache Mesos, Apache Aurora, Apache Parquet). We also plan to be
>>>> mentored
>>>>>> by experienced ASF members that can help with any roadblocks.
>>>>>> 
>>>>>> ### Homogenous Developers
>>>>>> 
>>>>>> Initial committers come from 5 separate organizations. Our intention
>> is
>>>>>> increase the diversity of contributing developers and their
>>>> affiliations.
>>>>>> To date github contributions have come from approximately 50
>>>> contributors
>>>>>> from outside the Twitter team.
>>>>>> 
>>>>>> ### Reliance on Salaried Developers
>>>>>> 
>>>>>> It is expected that Heron development will occur on both salaried time
>>>>> and
>>>>>> on volunteer time. The majority of initial committers are paid by
>> their
>>>>>> employers to contribute to this project. We are committed to
>> recruiting
>>>>>> additional committers from other organizations as well as non-salaried
>>>>>> committers to join project.
>>>>>> 
>>>>>> ### Relationships with Other Apache Products
>>>>>> 
>>>>>> As mentioned in the Alignment section, Heron implements the Apache
>>>> Storm
>>>>>> API and integrates with multiple Apache schedulers (Apache Mesos,
>>>> Apache
>>>>>> Aurora and Apache Hadoop's YARN) as well as Apache ZooKeeper and
>> Apache
>>>>>> Thrift.
>>>>>> 
>>>>>> ### An Excessive Fascination with the Apache Brand
>>>>>> 
>>>>>> Heron's popularity is growing in the streaming compute space and we
>> are
>>>>>> long time supporters of the Apache brand. This proposal is not for the
>>>>>> purpose of generating publicity through. Rather, the primary benefits
>>>> to
>>>>>> joining Apache are those of community building and open decision
>> making
>>>>>> outlined in the Rationale section.
>>>>>> 
>>>>>> ## Documentation
>>>>>> 
>>>>>> This proposal exists online as http://wiki.apache.org/
>>>>>> incubator/HeronProposal. Extensive documentation can be found on
>> github
>>>>> at
>>>>>> https://twitter.github.io/heron and the source code is well
>>>> documented.
>>>>>> 
>>>>>> ## Source and Intellectual Property Submission Plan
>>>>>> 
>>>>>> The Heron codebase is currently hosted on Github:
>>>>>> https://github.com/twitter/heron. During incubation, the codebase
>> will
>>>>> be
>>>>>> migrated to Apache infrastructure. The source code is already ASF 2.0
>>>>>> licensed.
>>>>>> 
>>>>>> ## External Dependencies
>>>>>> 
>>>>>> All external libraries have ASF 2.0 compatible licenses except for
>>>>> pylint.
>>>>>> The pylint library is GPL licensed, but is only used for pre-build
>>>> Python
>>>>>> style checks and is neither bundled with, nor relied upon by, the
>> Heron
>>>>>> source or binary release artifacts.
>>>>>> 
>>>>>> ## Cryptography
>>>>>> 
>>>>>> Heron does not use any cryptography libraries.
>>>>>> 
>>>>>> ## Required Resources
>>>>>> 
>>>>>> ### Mailing lists
>>>>>> 
>>>>>> private@heron.incubator.apache.org (with moderated subscriptions)
>>>>>> dev@heron.incubator.apache.org
>>>>>> commits@heron.incubator.apache.org
>>>>>> user@heron.incubator.apache.org
>>>>>> 
>>>>>> ## Subversion Directory
>>>>>> 
>>>>>> Git is the preferred source control system: git://
>> git.apache.org/heron
>>>>>> 
>>>>>> ## Issue Tracking
>>>>>> 
>>>>>> JIRA: Heron (HERON)
>>>>>> 
>>>>>> ## Initial Committers
>>>>>> 
>>>>>> * Andrew Jorgensen (andrew at andrewjorgensen dot com)
>>>>>> * Ashvin Agrawal (ashvin at apache dot org)*
>>>>>> * Avrilia Floratou (avrilia dot floratou at gmail dot com)
>>>>>> * Bill Graham (billgraham at apache dot org)*
>>>>>> * Brian Hatfield (bmhatfield at gmail dot com)
>>>>>> * Chris Kellogg (cckellogg at gmail dot com)
>>>>>> * Huijun Wu (huijun dot wu dot 2010 at gmail dot com)
>>>>>> * Karthik Ramasamy (karthik at gmail dot com)
>>>>>> * Maosong Fu (maosongfu at gmail dot com)
>>>>>> * Neng Lu(freeneng at gmail dot com)
>>>>>> * Runhang Li (obj dot runhang at gmail dot com)
>>>>>> * Sanjeev Kulkarni (sanjeevrk at gmail dot com)
>>>>>> * Supun Kamburugamuve (supun at apache dot org)*
>>>>>> * Thomas Sun (tom dot ssf at gmail dot com)
>>>>>> * Yaliang Wang (yaliang dot w dot wang at ieee dot org)
>>>>>> 
>>>>>> ## Affiliations
>>>>>> 
>>>>>> * Andrew Jorgensen (Google)
>>>>>> * Ashvin Agrawal (Microsoft)
>>>>>> * Avrilia Floratou (Microsoft)
>>>>>> * Bill Graham (Twitter)
>>>>>> * Brian Hatfield (Google)
>>>>>> * Chris Kellogg (Twitter)
>>>>>> * Huijun Wu (Twitter)
>>>>>> * Karthik Ramasamy (Streamlio)
>>>>>> * Maosong Fu (Twitter)
>>>>>> * Neng Lu (Twitter)
>>>>>> * Runhang Li (Twitter)
>>>>>> * Sanjeev Kulkarni (Streamlio)
>>>>>> * Supun Kamburugamuve (Indiana University)
>>>>>> * Thomas Sun (Twitter)
>>>>>> * Yaliang Wang (Twitter)
>>>>>> 
>>>>>> ## Sponsors
>>>>>> 
>>>>>> ### Champion
>>>>>> 
>>>>>> * Julien Le Dem (julien at apache dot org)
>>>>>> 
>>>>>> ### Nominated Mentors
>>>>>> 
>>>>>> * Jake Farrell (jfarrell at apache dot org)
>>>>>> * Jacques Nadeau (jacques at apache dot org)
>>>>>> * Julien Le Dem (julien at apache dot org)
>>>>>> 
>>>>>> ### Sponsoring Entity
>>>>>> 
>>>>>> The Apache Incubator
>>>>>> 
>>>>>> ### Footnotes
>>>>>> 
>>>>>> 1 - Papers detailing Heron are available at
>> http://dl.acm.org/citation
>>>> .
>>>>>> cfm?id=2742788 and http://sites.computer.org/debull/A15dec/p15.pdf.
>>>>>> 2 - http://home.apache.org/phonebook.html?uid=billgraham
>>>>>> 3 - http://home.apache.org/phonebook.html?uid=ashvin
>>>>>> 4 - http://home.apache.org/phonebook.html?uid=supun
>>>>> 
>>>>> ---------------------------------------------------------------------
>>>>> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
>>>>> For additional commands, e-mail: general-help@incubator.apache.org
>>>>> 
>>>>> 
>>>> 
>>> 
>>> 
>>> 
>>> --
>>> Supun Kamburugamuve
>>> Member, Apache Software Foundation; http://www.apache.org
>>> E-mail: supun@apache.o <su...@gmail.com>rg;  Mobile: +1 812 219 2563
>>> <(812)%20219-2563>
>> 
>> 
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
>> For additional commands, e-mail: general-help@incubator.apache.org
>> 
>> 
> 
> 
> -- 
> ~/William

---------------------------------------------------------------------
To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
For additional commands, e-mail: general-help@incubator.apache.org

Re: [PROPOSAL] Heron

[Ashvin A <aa...@gmail.com>]

Thanks William!
It will be great to work with you again.

On Thu, Jun 15, 2017 at 10:12 AM, Supun Kamburugamuve <su...@gmail.com>
wrote:

> Thank you, William, for offering to help with the incubation process. It
> will be really helpful.
>
> Supun..
>
> On Wed, Jun 14, 2017 at 11:04 PM, William Markito Oliveira <
> william.markito@gmail.com> wrote:
>
> > Howdy!
> >
> > If Heron is looking for some help around incubation process, I'd love to
> > help while Geode experience is still fresh in my mind and given that
> it's a
> > project/space that I do have interest. Since I'm not an ASF member, I
> don't
> > think I can offer to be a mentor, but can probably still help and
> > participate on the process.
> >
> > Thanks!
> >
> > On Wed, Jun 14, 2017 at 7:54 PM, P. Taylor Goetz <pt...@gmail.com>
> > wrote:
> >
> > > Hi Bill/Supun,
> > >
> > > Sorry for not being a little more clear. I was asking more about how
> the
> > > Heron community would seek to engage with Storm community at the
> > > *community* level as opposed to the technical level (i.e. “Community
> over
> > > Code”).
> > >
> > > I’ve been asked by many why this has never happened, and have always
> > > struggled to answer. Maybe you could help answer that question as well
> as
> > > if and how that might change if Heron were to incubate.
> > >
> > > Another quick question: The proposal mentions Heron being used in
> > > production at Google, but some Google employees I recently spoke to
> > seemed
> > > to contradict that. Could you explain? Note that’s nothing that would
> > > preclude the project from incubating, I’m just curious.
> > >
> > > -Taylor
> > >
> > > > On Jun 14, 2017, at 7:35 AM, Supun Kamburugamuve <su...@gmail.com>
> > > wrote:
> > > >
> > > > Hi Taylor,
> > > >
> > > > For me, one of the interesting differences between Heron and Storm is
> > the
> > > > execution model. Storm uses a shared memory model while Heron uses a
> > > > process based model. It will be interesting to see how these two
> > evolve.
> > > >
> > > > Thanks,
> > > > Supun..
> > > >
> > > > On Mon, Jun 12, 2017 at 4:15 PM, Bill Graham <bi...@gmail.com>
> > > wrote:
> > > >
> > > >> Hi Taylor,
> > > >>
> > > >> Thanks for the mentor offer, we'd be glad to have your help.
> > > >>
> > > >> I think the best place for collaboration would be around the
> evolution
> > > of
> > > >> the API. In addition we plan to look more into DSL solutions which
> we
> > > could
> > > >> potentially collaborate on. This could be Trident, or Beam or
> > something
> > > >> else, but there could be synergies for future development here.
> > > >>
> > > >> thanks,
> > > >> Bill
> > > >>
> > > >> On Fri, Jun 9, 2017 at 8:53 PM, P. Taylor Goetz <pt...@gmail.com>
> > > wrote:
> > > >>
> > > >>> Hi Bill,
> > > >>>
> > > >>> Could you comment on how/if the Heron community would be willing to
> > > work
> > > >>> with the Storm community? I've seen a number of new features in
> Storm
> > > >> being
> > > >>> ported to Heron, but I have yet to see any attempt by the Heron
> > > community
> > > >>> to engage with the Apache Storm community.
> > > >>>
> > > >>> I don't think it would be too far off to say that the relationship
> > > >> between
> > > >>> Heron and Apache Storm has been somewhat adversarial. The pre- and
> > > >>> post-open sourcing marketing around Heron seemed, at least to me,
> > > >> somewhat
> > > >>> aggressively negative toward Storm.
> > > >>>
> > > >>> As a peer to Apache Storm, how would the proposed "Apache Heron"
> > > >> community
> > > >>> work to collaborate with the Storm community? If Heron is adopting
> > API
> > > >>> changes in Storm, then it seems there is an opportunity for
> > > >> collaboration.
> > > >>>
> > > >>> Don't take any of this as an objection to incubating the project. I
> > > would
> > > >>> support it. I would also be willing to be a mentor, if you would
> > > consider
> > > >>> taking on another.
> > > >>>
> > > >>> -Taylor
> > > >>>
> > > >>>> On Jun 8, 2017, at 1:23 PM, Bill Graham <bi...@gmail.com>
> > wrote:
> > > >>>>
> > > >>>> Dear Apache Incubator Community,
> > > >>>>
> > > >>>> We are excited to share our proposal for discussion and feedback
> > > >>>> for entering Apache Incubation. Heron is a real-time, distributed,
> > > >>>> fault-tolerant stream processing engine.
> > > >>>>
> > > >>>> Our proposal can be found at https://wiki.apache.org/
> > > >>> incubator/HeronProposal
> > > >>>> and is included below.
> > > >>>>
> > > >>>>
> > > >>>> Thank you,
> > > >>>>
> > > >>>> Bill Graham on behalf of the Heron developers
> > > >>>>
> > > >>>>
> > > >>>> # Heron Proposal
> > > >>>>
> > > >>>> ## Abstract
> > > >>>> Heron is a real-time, distributed, fault-tolerant stream
> processing
> > > >>> engine
> > > >>>> initially developed by Twitter.
> > > >>>>
> > > >>>> ## Proposal
> > > >>>>
> > > >>>> Heron is a real-time stream processing engine built for high
> > > >> performance,
> > > >>>> ease of manageability, performance predictability and developer
> > > >>>> productivity[1]. We wish to develop a community around Heron to
> > > >> increase
> > > >>>> contributions and see Heron thrive in an open forum.
> > > >>>>
> > > >>>> ## Background
> > > >>>>
> > > >>>> Heron provides the ability for developers to compose directed
> > acyclic
> > > >>>> graphs (DAGs) of real-time query execution logic (i.e. a topology)
> > and
> > > >>>> submit the topology to execute on a pluggable job scheduling
> system
> > > >>> (e.g.,
> > > >>>> Apache Aurora, YARN, Marathon, etc). Users can employ either the
> > > native
> > > >>>> Heron API or the Apache Storm API to develop the topology. Heron
> > > >> supports
> > > >>>> the Storm API for ease of migration, but beyond that Heron’s
> > > >> architecture
> > > >>>> differs considerably from Storm’s.
> > > >>>>
> > > >>>> Users submit a topology to the scheduler using the Heron client,
> > which
> > > >>> uses
> > > >>>> the Heron binary libraries to deploy all daemons required to run
> and
> > > >>> manage
> > > >>>> the topology. The topology therefore has no reliance on centrally
> > > >> managed
> > > >>>> Heron services, only on a generic job scheduling system, which
> lends
> > > >>> itself
> > > >>>> well to be run on top of Apache Aurora/Mesos or Apache Hadoop/YARN
> > > >> (among
> > > >>>> others).
> > > >>>>
> > > >>>> The scheduler runs each topology as a job consisting of multiple
> > > >>>> containers. One of the containers runs the topology master,
> > > responsible
> > > >>> for
> > > >>>> managing the topology. The remaining containers each runs a stream
> > > >>> manager
> > > >>>> responsible for data routing, a metrics manager that collects and
> > > >> reports
> > > >>>> various metrics and a number of processes called Heron instances
> > which
> > > >>> run
> > > >>>> the user-defined logic on the stream of tuples. Parallelism is
> > > achieved
> > > >>> via
> > > >>>> process-based isolation of Heron instances, which provides
> > predictable
> > > >>>> performance while simplifying debugging. The containers are
> > allocated
> > > >> and
> > > >>>> managed by the scheduler framework based on resource availability
> of
> > > >>> nodes
> > > >>>> in the cluster. The metadata for the topology, such as the
> physical
> > > >> plan
> > > >>>> and execution details, are stored in the pluggable Heron State
> > Manager
> > > >>>> (e.g. Apache ZooKeeper).
> > > >>>>
> > > >>>> ## Rationale
> > > >>>>
> > > >>>> Heron is a general-purpose, modular and extensible platform that
> can
> > > be
> > > >>>> leveraged to support common, real-time analytics use cases. There
> is
> > > an
> > > >>>> increasing demand for open-source, scalable real-time analytics
> > > >> systems.
> > > >>> We
> > > >>>> believe that Heron can be leveraged by other organizations to
> build
> > > >>>> streaming applications that can benefit from its robustness, high
> > > >>>> performance, adaptability to cloud environments and ease of use.
> > > >>> Moreover,
> > > >>>> we hope that open-sourcing Heron will help to further evolve the
> > > >>> technology
> > > >>>> as the project attracts contributors with diverse backgrounds and
> > > areas
> > > >>> of
> > > >>>> expertise.
> > > >>>>
> > > >>>> We believe the Apache foundation is a great fit as the long-term
> > home
> > > >> for
> > > >>>> Heron, as it provides an established process for community-driven
> > > >>>> development and decision making by consensus. This is exactly the
> > > model
> > > >>> we
> > > >>>> want for future Heron development.
> > > >>>>
> > > >>>> ## Initial Goals
> > > >>>>
> > > >>>> * Move the existing codebase, website, documentation, and mailing
> > > lists
> > > >>> to
> > > >>>> Apache-hosted infrastructure.
> > > >>>> * Integrate with the Apache development process.
> > > >>>> * Ensure all dependencies are compliant with Apache License
> version
> > > >> 2.0.
> > > >>>> * Incrementally develop and release per Apache guidelines.
> > > >>>>
> > > >>>> ## Current Status
> > > >>>>
> > > >>>> Heron is a stable project used in production at Twitter since 2014
> > and
> > > >>> open
> > > >>>> sourced under the ASL v2 license in 2016. The Heron source code is
> > > >>>> currently hosted at github.com (https://github.com/twitter/heron
> ),
> > > >> which
> > > >>>> will seed the Apache git repository.
> > > >>>>
> > > >>>> ### Meritocracy
> > > >>>>
> > > >>>> By submitting this incubator proposal, we’re expressing our intent
> > to
> > > >>> build
> > > >>>> a diverse developer community around Heron that will conduct
> itself
> > > >>>> according to The Apache Way and use a meritocratic means of
> building
> > > >> it's
> > > >>>> committer base. Several companies and universities have already
> > > >> expressed
> > > >>>> interest in and contributed to Heron. Our goal is to grow the
> Heron
> > > >>>> community by encouraging open communication, contribution and
> > > >>> participation
> > > >>>> of all types, and ensuring that contributors are recognized
> > > >>> appropriately.
> > > >>>>
> > > >>>> ### Community
> > > >>>>
> > > >>>> Heron is currently being used by Twitter, Google, Machine Zone and
> > > >>>> ndustrial.io and has received significant contributions by
> > Microsoft
> > > >> and
> > > >>>> Streamlio. By bringing Heron into the Apache ecosystem, we believe
> > we
> > > >> can
> > > >>>> attract even more developers who are interested in creating
> > real-time
> > > >>>> systems to build the project's contributor base.
> > > >>>>
> > > >>>> ### Core Developers
> > > >>>>
> > > >>>> Current core developers are engineers from Twitter, Google,
> > Microsoft
> > > >> and
> > > >>>> Streamlio.
> > > >>>>
> > > >>>> ### Alignment
> > > >>>>
> > > >>>> Heron utilizes a number of Apache technologies. Heron leverages
> > Apache
> > > >>>> ZooKeeper for coordination and has scheduler implementations to
> > > >> integrate
> > > >>>> with Apache Mesos, Apache Aurora and Apache Hadoop's YARN (via
> > Apache
> > > >>> REEF)
> > > >>>> as well as spout implementations to integrate with Apache Kafka
> and
> > > >>> metrics
> > > >>>> implementations to integrate with Scribe. Heron also implements
> the
> > > >>> Apache
> > > >>>> Storm user-level API, which allows topologies written against
> Storm
> > to
> > > >>> run
> > > >>>> in Heron. We believe that having Heron at Apache will help further
> > the
> > > >>>> growth of the streaming compute community, as well as encourage
> > > >>> cooperation
> > > >>>> and developer cross pollination with other Apache projects.
> > > >>>>
> > > >>>> ## Known Risks
> > > >>>>
> > > >>>> ### Orphaned Products
> > > >>>>
> > > >>>> The risk of the Heron project being abandoned is minimal. It is
> used
> > > in
> > > >>>> production at Twitter and Google and other companies are
> evaluating
> > or
> > > >>>> adopting it for production use.
> > > >>>>
> > > >>>> ### Inexperience with Open Source
> > > >>>>
> > > >>>> All of the core contributors to the project have considerable
> > > >> experience
> > > >>>> with open source software development. Bill Graham[2], Ashvin
> > > >> Agrawal[3]
> > > >>>> and Supun Kamburugamuve[4], committers on the project, are PMCs on
> > > >> other
> > > >>>> Apache projects and Bill and Ashvin have gone through the Apache
> > > >>> incubator
> > > >>>> process. Twitter has already donated numerous projects to the ASF
> > > >> (e.g.,
> > > >>>> Apache Mesos, Apache Aurora, Apache Parquet). We also plan to be
> > > >> mentored
> > > >>>> by experienced ASF members that can help with any roadblocks.
> > > >>>>
> > > >>>> ### Homogenous Developers
> > > >>>>
> > > >>>> Initial committers come from 5 separate organizations. Our
> intention
> > > is
> > > >>>> increase the diversity of contributing developers and their
> > > >> affiliations.
> > > >>>> To date github contributions have come from approximately 50
> > > >> contributors
> > > >>>> from outside the Twitter team.
> > > >>>>
> > > >>>> ### Reliance on Salaried Developers
> > > >>>>
> > > >>>> It is expected that Heron development will occur on both salaried
> > time
> > > >>> and
> > > >>>> on volunteer time. The majority of initial committers are paid by
> > > their
> > > >>>> employers to contribute to this project. We are committed to
> > > recruiting
> > > >>>> additional committers from other organizations as well as
> > non-salaried
> > > >>>> committers to join project.
> > > >>>>
> > > >>>> ### Relationships with Other Apache Products
> > > >>>>
> > > >>>> As mentioned in the Alignment section, Heron implements the Apache
> > > >> Storm
> > > >>>> API and integrates with multiple Apache schedulers (Apache Mesos,
> > > >> Apache
> > > >>>> Aurora and Apache Hadoop's YARN) as well as Apache ZooKeeper and
> > > Apache
> > > >>>> Thrift.
> > > >>>>
> > > >>>> ### An Excessive Fascination with the Apache Brand
> > > >>>>
> > > >>>> Heron's popularity is growing in the streaming compute space and
> we
> > > are
> > > >>>> long time supporters of the Apache brand. This proposal is not for
> > the
> > > >>>> purpose of generating publicity through. Rather, the primary
> > benefits
> > > >> to
> > > >>>> joining Apache are those of community building and open decision
> > > making
> > > >>>> outlined in the Rationale section.
> > > >>>>
> > > >>>> ## Documentation
> > > >>>>
> > > >>>> This proposal exists online as http://wiki.apache.org/
> > > >>>> incubator/HeronProposal. Extensive documentation can be found on
> > > github
> > > >>> at
> > > >>>> https://twitter.github.io/heron and the source code is well
> > > >> documented.
> > > >>>>
> > > >>>> ## Source and Intellectual Property Submission Plan
> > > >>>>
> > > >>>> The Heron codebase is currently hosted on Github:
> > > >>>> https://github.com/twitter/heron. During incubation, the codebase
> > > will
> > > >>> be
> > > >>>> migrated to Apache infrastructure. The source code is already ASF
> > 2.0
> > > >>>> licensed.
> > > >>>>
> > > >>>> ## External Dependencies
> > > >>>>
> > > >>>> All external libraries have ASF 2.0 compatible licenses except for
> > > >>> pylint.
> > > >>>> The pylint library is GPL licensed, but is only used for pre-build
> > > >> Python
> > > >>>> style checks and is neither bundled with, nor relied upon by, the
> > > Heron
> > > >>>> source or binary release artifacts.
> > > >>>>
> > > >>>> ## Cryptography
> > > >>>>
> > > >>>> Heron does not use any cryptography libraries.
> > > >>>>
> > > >>>> ## Required Resources
> > > >>>>
> > > >>>> ### Mailing lists
> > > >>>>
> > > >>>> private@heron.incubator.apache.org (with moderated subscriptions)
> > > >>>> dev@heron.incubator.apache.org
> > > >>>> commits@heron.incubator.apache.org
> > > >>>> user@heron.incubator.apache.org
> > > >>>>
> > > >>>> ## Subversion Directory
> > > >>>>
> > > >>>> Git is the preferred source control system: git://
> > > git.apache.org/heron
> > > >>>>
> > > >>>> ## Issue Tracking
> > > >>>>
> > > >>>> JIRA: Heron (HERON)
> > > >>>>
> > > >>>> ## Initial Committers
> > > >>>>
> > > >>>> * Andrew Jorgensen (andrew at andrewjorgensen dot com)
> > > >>>> * Ashvin Agrawal (ashvin at apache dot org)*
> > > >>>> * Avrilia Floratou (avrilia dot floratou at gmail dot com)
> > > >>>> * Bill Graham (billgraham at apache dot org)*
> > > >>>> * Brian Hatfield (bmhatfield at gmail dot com)
> > > >>>> * Chris Kellogg (cckellogg at gmail dot com)
> > > >>>> * Huijun Wu (huijun dot wu dot 2010 at gmail dot com)
> > > >>>> * Karthik Ramasamy (karthik at gmail dot com)
> > > >>>> * Maosong Fu (maosongfu at gmail dot com)
> > > >>>> * Neng Lu(freeneng at gmail dot com)
> > > >>>> * Runhang Li (obj dot runhang at gmail dot com)
> > > >>>> * Sanjeev Kulkarni (sanjeevrk at gmail dot com)
> > > >>>> * Supun Kamburugamuve (supun at apache dot org)*
> > > >>>> * Thomas Sun (tom dot ssf at gmail dot com)
> > > >>>> * Yaliang Wang (yaliang dot w dot wang at ieee dot org)
> > > >>>>
> > > >>>> ## Affiliations
> > > >>>>
> > > >>>> * Andrew Jorgensen (Google)
> > > >>>> * Ashvin Agrawal (Microsoft)
> > > >>>> * Avrilia Floratou (Microsoft)
> > > >>>> * Bill Graham (Twitter)
> > > >>>> * Brian Hatfield (Google)
> > > >>>> * Chris Kellogg (Twitter)
> > > >>>> * Huijun Wu (Twitter)
> > > >>>> * Karthik Ramasamy (Streamlio)
> > > >>>> * Maosong Fu (Twitter)
> > > >>>> * Neng Lu (Twitter)
> > > >>>> * Runhang Li (Twitter)
> > > >>>> * Sanjeev Kulkarni (Streamlio)
> > > >>>> * Supun Kamburugamuve (Indiana University)
> > > >>>> * Thomas Sun (Twitter)
> > > >>>> * Yaliang Wang (Twitter)
> > > >>>>
> > > >>>> ## Sponsors
> > > >>>>
> > > >>>> ### Champion
> > > >>>>
> > > >>>> * Julien Le Dem (julien at apache dot org)
> > > >>>>
> > > >>>> ### Nominated Mentors
> > > >>>>
> > > >>>> * Jake Farrell (jfarrell at apache dot org)
> > > >>>> * Jacques Nadeau (jacques at apache dot org)
> > > >>>> * Julien Le Dem (julien at apache dot org)
> > > >>>>
> > > >>>> ### Sponsoring Entity
> > > >>>>
> > > >>>> The Apache Incubator
> > > >>>>
> > > >>>> ### Footnotes
> > > >>>>
> > > >>>> 1 - Papers detailing Heron are available at
> > > http://dl.acm.org/citation
> > > >> .
> > > >>>> cfm?id=2742788 and http://sites.computer.org/
> debull/A15dec/p15.pdf.
> > > >>>> 2 - http://home.apache.org/phonebook.html?uid=billgraham
> > > >>>> 3 - http://home.apache.org/phonebook.html?uid=ashvin
> > > >>>> 4 - http://home.apache.org/phonebook.html?uid=supun
> > > >>>
> > > >>> ------------------------------------------------------------
> > ---------
> > > >>> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> > > >>> For additional commands, e-mail: general-help@incubator.apache.org
> > > >>>
> > > >>>
> > > >>
> > > >
> > > >
> > > >
> > > > --
> > > > Supun Kamburugamuve
> > > > Member, Apache Software Foundation; http://www.apache.org
> > > > E-mail: supun@apache.o <su...@gmail.com>rg;  Mobile: +1 812 219
> 2563
> > > > <(812)%20219-2563>
> > >
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> > > For additional commands, e-mail: general-help@incubator.apache.org
> > >
> > >
> >
> >
> > --
> > ~/William
> >
>
>
>
> --
> Supun Kamburugamuve
> Member, Apache Software Foundation; http://www.apache.org
> E-mail: supun@apache.o <su...@gmail.com>rg;  Mobile: +1 812 219 2563
>

Re: [PROPOSAL] Heron

[Supun Kamburugamuve <su...@gmail.com>]

Thank you, William, for offering to help with the incubation process. It
will be really helpful.

Supun..

On Wed, Jun 14, 2017 at 11:04 PM, William Markito Oliveira <
william.markito@gmail.com> wrote:

> Howdy!
>
> If Heron is looking for some help around incubation process, I'd love to
> help while Geode experience is still fresh in my mind and given that it's a
> project/space that I do have interest. Since I'm not an ASF member, I don't
> think I can offer to be a mentor, but can probably still help and
> participate on the process.
>
> Thanks!
>
> On Wed, Jun 14, 2017 at 7:54 PM, P. Taylor Goetz <pt...@gmail.com>
> wrote:
>
> > Hi Bill/Supun,
> >
> > Sorry for not being a little more clear. I was asking more about how the
> > Heron community would seek to engage with Storm community at the
> > *community* level as opposed to the technical level (i.e. “Community over
> > Code”).
> >
> > I’ve been asked by many why this has never happened, and have always
> > struggled to answer. Maybe you could help answer that question as well as
> > if and how that might change if Heron were to incubate.
> >
> > Another quick question: The proposal mentions Heron being used in
> > production at Google, but some Google employees I recently spoke to
> seemed
> > to contradict that. Could you explain? Note that’s nothing that would
> > preclude the project from incubating, I’m just curious.
> >
> > -Taylor
> >
> > > On Jun 14, 2017, at 7:35 AM, Supun Kamburugamuve <su...@gmail.com>
> > wrote:
> > >
> > > Hi Taylor,
> > >
> > > For me, one of the interesting differences between Heron and Storm is
> the
> > > execution model. Storm uses a shared memory model while Heron uses a
> > > process based model. It will be interesting to see how these two
> evolve.
> > >
> > > Thanks,
> > > Supun..
> > >
> > > On Mon, Jun 12, 2017 at 4:15 PM, Bill Graham <bi...@gmail.com>
> > wrote:
> > >
> > >> Hi Taylor,
> > >>
> > >> Thanks for the mentor offer, we'd be glad to have your help.
> > >>
> > >> I think the best place for collaboration would be around the evolution
> > of
> > >> the API. In addition we plan to look more into DSL solutions which we
> > could
> > >> potentially collaborate on. This could be Trident, or Beam or
> something
> > >> else, but there could be synergies for future development here.
> > >>
> > >> thanks,
> > >> Bill
> > >>
> > >> On Fri, Jun 9, 2017 at 8:53 PM, P. Taylor Goetz <pt...@gmail.com>
> > wrote:
> > >>
> > >>> Hi Bill,
> > >>>
> > >>> Could you comment on how/if the Heron community would be willing to
> > work
> > >>> with the Storm community? I've seen a number of new features in Storm
> > >> being
> > >>> ported to Heron, but I have yet to see any attempt by the Heron
> > community
> > >>> to engage with the Apache Storm community.
> > >>>
> > >>> I don't think it would be too far off to say that the relationship
> > >> between
> > >>> Heron and Apache Storm has been somewhat adversarial. The pre- and
> > >>> post-open sourcing marketing around Heron seemed, at least to me,
> > >> somewhat
> > >>> aggressively negative toward Storm.
> > >>>
> > >>> As a peer to Apache Storm, how would the proposed "Apache Heron"
> > >> community
> > >>> work to collaborate with the Storm community? If Heron is adopting
> API
> > >>> changes in Storm, then it seems there is an opportunity for
> > >> collaboration.
> > >>>
> > >>> Don't take any of this as an objection to incubating the project. I
> > would
> > >>> support it. I would also be willing to be a mentor, if you would
> > consider
> > >>> taking on another.
> > >>>
> > >>> -Taylor
> > >>>
> > >>>> On Jun 8, 2017, at 1:23 PM, Bill Graham <bi...@gmail.com>
> wrote:
> > >>>>
> > >>>> Dear Apache Incubator Community,
> > >>>>
> > >>>> We are excited to share our proposal for discussion and feedback
> > >>>> for entering Apache Incubation. Heron is a real-time, distributed,
> > >>>> fault-tolerant stream processing engine.
> > >>>>
> > >>>> Our proposal can be found at https://wiki.apache.org/
> > >>> incubator/HeronProposal
> > >>>> and is included below.
> > >>>>
> > >>>>
> > >>>> Thank you,
> > >>>>
> > >>>> Bill Graham on behalf of the Heron developers
> > >>>>
> > >>>>
> > >>>> # Heron Proposal
> > >>>>
> > >>>> ## Abstract
> > >>>> Heron is a real-time, distributed, fault-tolerant stream processing
> > >>> engine
> > >>>> initially developed by Twitter.
> > >>>>
> > >>>> ## Proposal
> > >>>>
> > >>>> Heron is a real-time stream processing engine built for high
> > >> performance,
> > >>>> ease of manageability, performance predictability and developer
> > >>>> productivity[1]. We wish to develop a community around Heron to
> > >> increase
> > >>>> contributions and see Heron thrive in an open forum.
> > >>>>
> > >>>> ## Background
> > >>>>
> > >>>> Heron provides the ability for developers to compose directed
> acyclic
> > >>>> graphs (DAGs) of real-time query execution logic (i.e. a topology)
> and
> > >>>> submit the topology to execute on a pluggable job scheduling system
> > >>> (e.g.,
> > >>>> Apache Aurora, YARN, Marathon, etc). Users can employ either the
> > native
> > >>>> Heron API or the Apache Storm API to develop the topology. Heron
> > >> supports
> > >>>> the Storm API for ease of migration, but beyond that Heron’s
> > >> architecture
> > >>>> differs considerably from Storm’s.
> > >>>>
> > >>>> Users submit a topology to the scheduler using the Heron client,
> which
> > >>> uses
> > >>>> the Heron binary libraries to deploy all daemons required to run and
> > >>> manage
> > >>>> the topology. The topology therefore has no reliance on centrally
> > >> managed
> > >>>> Heron services, only on a generic job scheduling system, which lends
> > >>> itself
> > >>>> well to be run on top of Apache Aurora/Mesos or Apache Hadoop/YARN
> > >> (among
> > >>>> others).
> > >>>>
> > >>>> The scheduler runs each topology as a job consisting of multiple
> > >>>> containers. One of the containers runs the topology master,
> > responsible
> > >>> for
> > >>>> managing the topology. The remaining containers each runs a stream
> > >>> manager
> > >>>> responsible for data routing, a metrics manager that collects and
> > >> reports
> > >>>> various metrics and a number of processes called Heron instances
> which
> > >>> run
> > >>>> the user-defined logic on the stream of tuples. Parallelism is
> > achieved
> > >>> via
> > >>>> process-based isolation of Heron instances, which provides
> predictable
> > >>>> performance while simplifying debugging. The containers are
> allocated
> > >> and
> > >>>> managed by the scheduler framework based on resource availability of
> > >>> nodes
> > >>>> in the cluster. The metadata for the topology, such as the physical
> > >> plan
> > >>>> and execution details, are stored in the pluggable Heron State
> Manager
> > >>>> (e.g. Apache ZooKeeper).
> > >>>>
> > >>>> ## Rationale
> > >>>>
> > >>>> Heron is a general-purpose, modular and extensible platform that can
> > be
> > >>>> leveraged to support common, real-time analytics use cases. There is
> > an
> > >>>> increasing demand for open-source, scalable real-time analytics
> > >> systems.
> > >>> We
> > >>>> believe that Heron can be leveraged by other organizations to build
> > >>>> streaming applications that can benefit from its robustness, high
> > >>>> performance, adaptability to cloud environments and ease of use.
> > >>> Moreover,
> > >>>> we hope that open-sourcing Heron will help to further evolve the
> > >>> technology
> > >>>> as the project attracts contributors with diverse backgrounds and
> > areas
> > >>> of
> > >>>> expertise.
> > >>>>
> > >>>> We believe the Apache foundation is a great fit as the long-term
> home
> > >> for
> > >>>> Heron, as it provides an established process for community-driven
> > >>>> development and decision making by consensus. This is exactly the
> > model
> > >>> we
> > >>>> want for future Heron development.
> > >>>>
> > >>>> ## Initial Goals
> > >>>>
> > >>>> * Move the existing codebase, website, documentation, and mailing
> > lists
> > >>> to
> > >>>> Apache-hosted infrastructure.
> > >>>> * Integrate with the Apache development process.
> > >>>> * Ensure all dependencies are compliant with Apache License version
> > >> 2.0.
> > >>>> * Incrementally develop and release per Apache guidelines.
> > >>>>
> > >>>> ## Current Status
> > >>>>
> > >>>> Heron is a stable project used in production at Twitter since 2014
> and
> > >>> open
> > >>>> sourced under the ASL v2 license in 2016. The Heron source code is
> > >>>> currently hosted at github.com (https://github.com/twitter/heron),
> > >> which
> > >>>> will seed the Apache git repository.
> > >>>>
> > >>>> ### Meritocracy
> > >>>>
> > >>>> By submitting this incubator proposal, we’re expressing our intent
> to
> > >>> build
> > >>>> a diverse developer community around Heron that will conduct itself
> > >>>> according to The Apache Way and use a meritocratic means of building
> > >> it's
> > >>>> committer base. Several companies and universities have already
> > >> expressed
> > >>>> interest in and contributed to Heron. Our goal is to grow the Heron
> > >>>> community by encouraging open communication, contribution and
> > >>> participation
> > >>>> of all types, and ensuring that contributors are recognized
> > >>> appropriately.
> > >>>>
> > >>>> ### Community
> > >>>>
> > >>>> Heron is currently being used by Twitter, Google, Machine Zone and
> > >>>> ndustrial.io and has received significant contributions by
> Microsoft
> > >> and
> > >>>> Streamlio. By bringing Heron into the Apache ecosystem, we believe
> we
> > >> can
> > >>>> attract even more developers who are interested in creating
> real-time
> > >>>> systems to build the project's contributor base.
> > >>>>
> > >>>> ### Core Developers
> > >>>>
> > >>>> Current core developers are engineers from Twitter, Google,
> Microsoft
> > >> and
> > >>>> Streamlio.
> > >>>>
> > >>>> ### Alignment
> > >>>>
> > >>>> Heron utilizes a number of Apache technologies. Heron leverages
> Apache
> > >>>> ZooKeeper for coordination and has scheduler implementations to
> > >> integrate
> > >>>> with Apache Mesos, Apache Aurora and Apache Hadoop's YARN (via
> Apache
> > >>> REEF)
> > >>>> as well as spout implementations to integrate with Apache Kafka and
> > >>> metrics
> > >>>> implementations to integrate with Scribe. Heron also implements the
> > >>> Apache
> > >>>> Storm user-level API, which allows topologies written against Storm
> to
> > >>> run
> > >>>> in Heron. We believe that having Heron at Apache will help further
> the
> > >>>> growth of the streaming compute community, as well as encourage
> > >>> cooperation
> > >>>> and developer cross pollination with other Apache projects.
> > >>>>
> > >>>> ## Known Risks
> > >>>>
> > >>>> ### Orphaned Products
> > >>>>
> > >>>> The risk of the Heron project being abandoned is minimal. It is used
> > in
> > >>>> production at Twitter and Google and other companies are evaluating
> or
> > >>>> adopting it for production use.
> > >>>>
> > >>>> ### Inexperience with Open Source
> > >>>>
> > >>>> All of the core contributors to the project have considerable
> > >> experience
> > >>>> with open source software development. Bill Graham[2], Ashvin
> > >> Agrawal[3]
> > >>>> and Supun Kamburugamuve[4], committers on the project, are PMCs on
> > >> other
> > >>>> Apache projects and Bill and Ashvin have gone through the Apache
> > >>> incubator
> > >>>> process. Twitter has already donated numerous projects to the ASF
> > >> (e.g.,
> > >>>> Apache Mesos, Apache Aurora, Apache Parquet). We also plan to be
> > >> mentored
> > >>>> by experienced ASF members that can help with any roadblocks.
> > >>>>
> > >>>> ### Homogenous Developers
> > >>>>
> > >>>> Initial committers come from 5 separate organizations. Our intention
> > is
> > >>>> increase the diversity of contributing developers and their
> > >> affiliations.
> > >>>> To date github contributions have come from approximately 50
> > >> contributors
> > >>>> from outside the Twitter team.
> > >>>>
> > >>>> ### Reliance on Salaried Developers
> > >>>>
> > >>>> It is expected that Heron development will occur on both salaried
> time
> > >>> and
> > >>>> on volunteer time. The majority of initial committers are paid by
> > their
> > >>>> employers to contribute to this project. We are committed to
> > recruiting
> > >>>> additional committers from other organizations as well as
> non-salaried
> > >>>> committers to join project.
> > >>>>
> > >>>> ### Relationships with Other Apache Products
> > >>>>
> > >>>> As mentioned in the Alignment section, Heron implements the Apache
> > >> Storm
> > >>>> API and integrates with multiple Apache schedulers (Apache Mesos,
> > >> Apache
> > >>>> Aurora and Apache Hadoop's YARN) as well as Apache ZooKeeper and
> > Apache
> > >>>> Thrift.
> > >>>>
> > >>>> ### An Excessive Fascination with the Apache Brand
> > >>>>
> > >>>> Heron's popularity is growing in the streaming compute space and we
> > are
> > >>>> long time supporters of the Apache brand. This proposal is not for
> the
> > >>>> purpose of generating publicity through. Rather, the primary
> benefits
> > >> to
> > >>>> joining Apache are those of community building and open decision
> > making
> > >>>> outlined in the Rationale section.
> > >>>>
> > >>>> ## Documentation
> > >>>>
> > >>>> This proposal exists online as http://wiki.apache.org/
> > >>>> incubator/HeronProposal. Extensive documentation can be found on
> > github
> > >>> at
> > >>>> https://twitter.github.io/heron and the source code is well
> > >> documented.
> > >>>>
> > >>>> ## Source and Intellectual Property Submission Plan
> > >>>>
> > >>>> The Heron codebase is currently hosted on Github:
> > >>>> https://github.com/twitter/heron. During incubation, the codebase
> > will
> > >>> be
> > >>>> migrated to Apache infrastructure. The source code is already ASF
> 2.0
> > >>>> licensed.
> > >>>>
> > >>>> ## External Dependencies
> > >>>>
> > >>>> All external libraries have ASF 2.0 compatible licenses except for
> > >>> pylint.
> > >>>> The pylint library is GPL licensed, but is only used for pre-build
> > >> Python
> > >>>> style checks and is neither bundled with, nor relied upon by, the
> > Heron
> > >>>> source or binary release artifacts.
> > >>>>
> > >>>> ## Cryptography
> > >>>>
> > >>>> Heron does not use any cryptography libraries.
> > >>>>
> > >>>> ## Required Resources
> > >>>>
> > >>>> ### Mailing lists
> > >>>>
> > >>>> private@heron.incubator.apache.org (with moderated subscriptions)
> > >>>> dev@heron.incubator.apache.org
> > >>>> commits@heron.incubator.apache.org
> > >>>> user@heron.incubator.apache.org
> > >>>>
> > >>>> ## Subversion Directory
> > >>>>
> > >>>> Git is the preferred source control system: git://
> > git.apache.org/heron
> > >>>>
> > >>>> ## Issue Tracking
> > >>>>
> > >>>> JIRA: Heron (HERON)
> > >>>>
> > >>>> ## Initial Committers
> > >>>>
> > >>>> * Andrew Jorgensen (andrew at andrewjorgensen dot com)
> > >>>> * Ashvin Agrawal (ashvin at apache dot org)*
> > >>>> * Avrilia Floratou (avrilia dot floratou at gmail dot com)
> > >>>> * Bill Graham (billgraham at apache dot org)*
> > >>>> * Brian Hatfield (bmhatfield at gmail dot com)
> > >>>> * Chris Kellogg (cckellogg at gmail dot com)
> > >>>> * Huijun Wu (huijun dot wu dot 2010 at gmail dot com)
> > >>>> * Karthik Ramasamy (karthik at gmail dot com)
> > >>>> * Maosong Fu (maosongfu at gmail dot com)
> > >>>> * Neng Lu(freeneng at gmail dot com)
> > >>>> * Runhang Li (obj dot runhang at gmail dot com)
> > >>>> * Sanjeev Kulkarni (sanjeevrk at gmail dot com)
> > >>>> * Supun Kamburugamuve (supun at apache dot org)*
> > >>>> * Thomas Sun (tom dot ssf at gmail dot com)
> > >>>> * Yaliang Wang (yaliang dot w dot wang at ieee dot org)
> > >>>>
> > >>>> ## Affiliations
> > >>>>
> > >>>> * Andrew Jorgensen (Google)
> > >>>> * Ashvin Agrawal (Microsoft)
> > >>>> * Avrilia Floratou (Microsoft)
> > >>>> * Bill Graham (Twitter)
> > >>>> * Brian Hatfield (Google)
> > >>>> * Chris Kellogg (Twitter)
> > >>>> * Huijun Wu (Twitter)
> > >>>> * Karthik Ramasamy (Streamlio)
> > >>>> * Maosong Fu (Twitter)
> > >>>> * Neng Lu (Twitter)
> > >>>> * Runhang Li (Twitter)
> > >>>> * Sanjeev Kulkarni (Streamlio)
> > >>>> * Supun Kamburugamuve (Indiana University)
> > >>>> * Thomas Sun (Twitter)
> > >>>> * Yaliang Wang (Twitter)
> > >>>>
> > >>>> ## Sponsors
> > >>>>
> > >>>> ### Champion
> > >>>>
> > >>>> * Julien Le Dem (julien at apache dot org)
> > >>>>
> > >>>> ### Nominated Mentors
> > >>>>
> > >>>> * Jake Farrell (jfarrell at apache dot org)
> > >>>> * Jacques Nadeau (jacques at apache dot org)
> > >>>> * Julien Le Dem (julien at apache dot org)
> > >>>>
> > >>>> ### Sponsoring Entity
> > >>>>
> > >>>> The Apache Incubator
> > >>>>
> > >>>> ### Footnotes
> > >>>>
> > >>>> 1 - Papers detailing Heron are available at
> > http://dl.acm.org/citation
> > >> .
> > >>>> cfm?id=2742788 and http://sites.computer.org/debull/A15dec/p15.pdf.
> > >>>> 2 - http://home.apache.org/phonebook.html?uid=billgraham
> > >>>> 3 - http://home.apache.org/phonebook.html?uid=ashvin
> > >>>> 4 - http://home.apache.org/phonebook.html?uid=supun
> > >>>
> > >>> ------------------------------------------------------------
> ---------
> > >>> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> > >>> For additional commands, e-mail: general-help@incubator.apache.org
> > >>>
> > >>>
> > >>
> > >
> > >
> > >
> > > --
> > > Supun Kamburugamuve
> > > Member, Apache Software Foundation; http://www.apache.org
> > > E-mail: supun@apache.o <su...@gmail.com>rg;  Mobile: +1 812 219 2563
> > > <(812)%20219-2563>
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> > For additional commands, e-mail: general-help@incubator.apache.org
> >
> >
>
>
> --
> ~/William
>



-- 
Supun Kamburugamuve
Member, Apache Software Foundation; http://www.apache.org
E-mail: supun@apache.o <su...@gmail.com>rg;  Mobile: +1 812 219 2563

Re: [PROPOSAL] Heron

[William Markito Oliveira <wi...@gmail.com>]

Howdy!

If Heron is looking for some help around incubation process, I'd love to
help while Geode experience is still fresh in my mind and given that it's a
project/space that I do have interest. Since I'm not an ASF member, I don't
think I can offer to be a mentor, but can probably still help and
participate on the process.

Thanks!

On Wed, Jun 14, 2017 at 7:54 PM, P. Taylor Goetz <pt...@gmail.com> wrote:

> Hi Bill/Supun,
>
> Sorry for not being a little more clear. I was asking more about how the
> Heron community would seek to engage with Storm community at the
> *community* level as opposed to the technical level (i.e. “Community over
> Code”).
>
> I’ve been asked by many why this has never happened, and have always
> struggled to answer. Maybe you could help answer that question as well as
> if and how that might change if Heron were to incubate.
>
> Another quick question: The proposal mentions Heron being used in
> production at Google, but some Google employees I recently spoke to seemed
> to contradict that. Could you explain? Note that’s nothing that would
> preclude the project from incubating, I’m just curious.
>
> -Taylor
>
> > On Jun 14, 2017, at 7:35 AM, Supun Kamburugamuve <su...@gmail.com>
> wrote:
> >
> > Hi Taylor,
> >
> > For me, one of the interesting differences between Heron and Storm is the
> > execution model. Storm uses a shared memory model while Heron uses a
> > process based model. It will be interesting to see how these two evolve.
> >
> > Thanks,
> > Supun..
> >
> > On Mon, Jun 12, 2017 at 4:15 PM, Bill Graham <bi...@gmail.com>
> wrote:
> >
> >> Hi Taylor,
> >>
> >> Thanks for the mentor offer, we'd be glad to have your help.
> >>
> >> I think the best place for collaboration would be around the evolution
> of
> >> the API. In addition we plan to look more into DSL solutions which we
> could
> >> potentially collaborate on. This could be Trident, or Beam or something
> >> else, but there could be synergies for future development here.
> >>
> >> thanks,
> >> Bill
> >>
> >> On Fri, Jun 9, 2017 at 8:53 PM, P. Taylor Goetz <pt...@gmail.com>
> wrote:
> >>
> >>> Hi Bill,
> >>>
> >>> Could you comment on how/if the Heron community would be willing to
> work
> >>> with the Storm community? I've seen a number of new features in Storm
> >> being
> >>> ported to Heron, but I have yet to see any attempt by the Heron
> community
> >>> to engage with the Apache Storm community.
> >>>
> >>> I don't think it would be too far off to say that the relationship
> >> between
> >>> Heron and Apache Storm has been somewhat adversarial. The pre- and
> >>> post-open sourcing marketing around Heron seemed, at least to me,
> >> somewhat
> >>> aggressively negative toward Storm.
> >>>
> >>> As a peer to Apache Storm, how would the proposed "Apache Heron"
> >> community
> >>> work to collaborate with the Storm community? If Heron is adopting API
> >>> changes in Storm, then it seems there is an opportunity for
> >> collaboration.
> >>>
> >>> Don't take any of this as an objection to incubating the project. I
> would
> >>> support it. I would also be willing to be a mentor, if you would
> consider
> >>> taking on another.
> >>>
> >>> -Taylor
> >>>
> >>>> On Jun 8, 2017, at 1:23 PM, Bill Graham <bi...@gmail.com> wrote:
> >>>>
> >>>> Dear Apache Incubator Community,
> >>>>
> >>>> We are excited to share our proposal for discussion and feedback
> >>>> for entering Apache Incubation. Heron is a real-time, distributed,
> >>>> fault-tolerant stream processing engine.
> >>>>
> >>>> Our proposal can be found at https://wiki.apache.org/
> >>> incubator/HeronProposal
> >>>> and is included below.
> >>>>
> >>>>
> >>>> Thank you,
> >>>>
> >>>> Bill Graham on behalf of the Heron developers
> >>>>
> >>>>
> >>>> # Heron Proposal
> >>>>
> >>>> ## Abstract
> >>>> Heron is a real-time, distributed, fault-tolerant stream processing
> >>> engine
> >>>> initially developed by Twitter.
> >>>>
> >>>> ## Proposal
> >>>>
> >>>> Heron is a real-time stream processing engine built for high
> >> performance,
> >>>> ease of manageability, performance predictability and developer
> >>>> productivity[1]. We wish to develop a community around Heron to
> >> increase
> >>>> contributions and see Heron thrive in an open forum.
> >>>>
> >>>> ## Background
> >>>>
> >>>> Heron provides the ability for developers to compose directed acyclic
> >>>> graphs (DAGs) of real-time query execution logic (i.e. a topology) and
> >>>> submit the topology to execute on a pluggable job scheduling system
> >>> (e.g.,
> >>>> Apache Aurora, YARN, Marathon, etc). Users can employ either the
> native
> >>>> Heron API or the Apache Storm API to develop the topology. Heron
> >> supports
> >>>> the Storm API for ease of migration, but beyond that Heron’s
> >> architecture
> >>>> differs considerably from Storm’s.
> >>>>
> >>>> Users submit a topology to the scheduler using the Heron client, which
> >>> uses
> >>>> the Heron binary libraries to deploy all daemons required to run and
> >>> manage
> >>>> the topology. The topology therefore has no reliance on centrally
> >> managed
> >>>> Heron services, only on a generic job scheduling system, which lends
> >>> itself
> >>>> well to be run on top of Apache Aurora/Mesos or Apache Hadoop/YARN
> >> (among
> >>>> others).
> >>>>
> >>>> The scheduler runs each topology as a job consisting of multiple
> >>>> containers. One of the containers runs the topology master,
> responsible
> >>> for
> >>>> managing the topology. The remaining containers each runs a stream
> >>> manager
> >>>> responsible for data routing, a metrics manager that collects and
> >> reports
> >>>> various metrics and a number of processes called Heron instances which
> >>> run
> >>>> the user-defined logic on the stream of tuples. Parallelism is
> achieved
> >>> via
> >>>> process-based isolation of Heron instances, which provides predictable
> >>>> performance while simplifying debugging. The containers are allocated
> >> and
> >>>> managed by the scheduler framework based on resource availability of
> >>> nodes
> >>>> in the cluster. The metadata for the topology, such as the physical
> >> plan
> >>>> and execution details, are stored in the pluggable Heron State Manager
> >>>> (e.g. Apache ZooKeeper).
> >>>>
> >>>> ## Rationale
> >>>>
> >>>> Heron is a general-purpose, modular and extensible platform that can
> be
> >>>> leveraged to support common, real-time analytics use cases. There is
> an
> >>>> increasing demand for open-source, scalable real-time analytics
> >> systems.
> >>> We
> >>>> believe that Heron can be leveraged by other organizations to build
> >>>> streaming applications that can benefit from its robustness, high
> >>>> performance, adaptability to cloud environments and ease of use.
> >>> Moreover,
> >>>> we hope that open-sourcing Heron will help to further evolve the
> >>> technology
> >>>> as the project attracts contributors with diverse backgrounds and
> areas
> >>> of
> >>>> expertise.
> >>>>
> >>>> We believe the Apache foundation is a great fit as the long-term home
> >> for
> >>>> Heron, as it provides an established process for community-driven
> >>>> development and decision making by consensus. This is exactly the
> model
> >>> we
> >>>> want for future Heron development.
> >>>>
> >>>> ## Initial Goals
> >>>>
> >>>> * Move the existing codebase, website, documentation, and mailing
> lists
> >>> to
> >>>> Apache-hosted infrastructure.
> >>>> * Integrate with the Apache development process.
> >>>> * Ensure all dependencies are compliant with Apache License version
> >> 2.0.
> >>>> * Incrementally develop and release per Apache guidelines.
> >>>>
> >>>> ## Current Status
> >>>>
> >>>> Heron is a stable project used in production at Twitter since 2014 and
> >>> open
> >>>> sourced under the ASL v2 license in 2016. The Heron source code is
> >>>> currently hosted at github.com (https://github.com/twitter/heron),
> >> which
> >>>> will seed the Apache git repository.
> >>>>
> >>>> ### Meritocracy
> >>>>
> >>>> By submitting this incubator proposal, we’re expressing our intent to
> >>> build
> >>>> a diverse developer community around Heron that will conduct itself
> >>>> according to The Apache Way and use a meritocratic means of building
> >> it's
> >>>> committer base. Several companies and universities have already
> >> expressed
> >>>> interest in and contributed to Heron. Our goal is to grow the Heron
> >>>> community by encouraging open communication, contribution and
> >>> participation
> >>>> of all types, and ensuring that contributors are recognized
> >>> appropriately.
> >>>>
> >>>> ### Community
> >>>>
> >>>> Heron is currently being used by Twitter, Google, Machine Zone and
> >>>> ndustrial.io and has received significant contributions by Microsoft
> >> and
> >>>> Streamlio. By bringing Heron into the Apache ecosystem, we believe we
> >> can
> >>>> attract even more developers who are interested in creating real-time
> >>>> systems to build the project's contributor base.
> >>>>
> >>>> ### Core Developers
> >>>>
> >>>> Current core developers are engineers from Twitter, Google, Microsoft
> >> and
> >>>> Streamlio.
> >>>>
> >>>> ### Alignment
> >>>>
> >>>> Heron utilizes a number of Apache technologies. Heron leverages Apache
> >>>> ZooKeeper for coordination and has scheduler implementations to
> >> integrate
> >>>> with Apache Mesos, Apache Aurora and Apache Hadoop's YARN (via Apache
> >>> REEF)
> >>>> as well as spout implementations to integrate with Apache Kafka and
> >>> metrics
> >>>> implementations to integrate with Scribe. Heron also implements the
> >>> Apache
> >>>> Storm user-level API, which allows topologies written against Storm to
> >>> run
> >>>> in Heron. We believe that having Heron at Apache will help further the
> >>>> growth of the streaming compute community, as well as encourage
> >>> cooperation
> >>>> and developer cross pollination with other Apache projects.
> >>>>
> >>>> ## Known Risks
> >>>>
> >>>> ### Orphaned Products
> >>>>
> >>>> The risk of the Heron project being abandoned is minimal. It is used
> in
> >>>> production at Twitter and Google and other companies are evaluating or
> >>>> adopting it for production use.
> >>>>
> >>>> ### Inexperience with Open Source
> >>>>
> >>>> All of the core contributors to the project have considerable
> >> experience
> >>>> with open source software development. Bill Graham[2], Ashvin
> >> Agrawal[3]
> >>>> and Supun Kamburugamuve[4], committers on the project, are PMCs on
> >> other
> >>>> Apache projects and Bill and Ashvin have gone through the Apache
> >>> incubator
> >>>> process. Twitter has already donated numerous projects to the ASF
> >> (e.g.,
> >>>> Apache Mesos, Apache Aurora, Apache Parquet). We also plan to be
> >> mentored
> >>>> by experienced ASF members that can help with any roadblocks.
> >>>>
> >>>> ### Homogenous Developers
> >>>>
> >>>> Initial committers come from 5 separate organizations. Our intention
> is
> >>>> increase the diversity of contributing developers and their
> >> affiliations.
> >>>> To date github contributions have come from approximately 50
> >> contributors
> >>>> from outside the Twitter team.
> >>>>
> >>>> ### Reliance on Salaried Developers
> >>>>
> >>>> It is expected that Heron development will occur on both salaried time
> >>> and
> >>>> on volunteer time. The majority of initial committers are paid by
> their
> >>>> employers to contribute to this project. We are committed to
> recruiting
> >>>> additional committers from other organizations as well as non-salaried
> >>>> committers to join project.
> >>>>
> >>>> ### Relationships with Other Apache Products
> >>>>
> >>>> As mentioned in the Alignment section, Heron implements the Apache
> >> Storm
> >>>> API and integrates with multiple Apache schedulers (Apache Mesos,
> >> Apache
> >>>> Aurora and Apache Hadoop's YARN) as well as Apache ZooKeeper and
> Apache
> >>>> Thrift.
> >>>>
> >>>> ### An Excessive Fascination with the Apache Brand
> >>>>
> >>>> Heron's popularity is growing in the streaming compute space and we
> are
> >>>> long time supporters of the Apache brand. This proposal is not for the
> >>>> purpose of generating publicity through. Rather, the primary benefits
> >> to
> >>>> joining Apache are those of community building and open decision
> making
> >>>> outlined in the Rationale section.
> >>>>
> >>>> ## Documentation
> >>>>
> >>>> This proposal exists online as http://wiki.apache.org/
> >>>> incubator/HeronProposal. Extensive documentation can be found on
> github
> >>> at
> >>>> https://twitter.github.io/heron and the source code is well
> >> documented.
> >>>>
> >>>> ## Source and Intellectual Property Submission Plan
> >>>>
> >>>> The Heron codebase is currently hosted on Github:
> >>>> https://github.com/twitter/heron. During incubation, the codebase
> will
> >>> be
> >>>> migrated to Apache infrastructure. The source code is already ASF 2.0
> >>>> licensed.
> >>>>
> >>>> ## External Dependencies
> >>>>
> >>>> All external libraries have ASF 2.0 compatible licenses except for
> >>> pylint.
> >>>> The pylint library is GPL licensed, but is only used for pre-build
> >> Python
> >>>> style checks and is neither bundled with, nor relied upon by, the
> Heron
> >>>> source or binary release artifacts.
> >>>>
> >>>> ## Cryptography
> >>>>
> >>>> Heron does not use any cryptography libraries.
> >>>>
> >>>> ## Required Resources
> >>>>
> >>>> ### Mailing lists
> >>>>
> >>>> private@heron.incubator.apache.org (with moderated subscriptions)
> >>>> dev@heron.incubator.apache.org
> >>>> commits@heron.incubator.apache.org
> >>>> user@heron.incubator.apache.org
> >>>>
> >>>> ## Subversion Directory
> >>>>
> >>>> Git is the preferred source control system: git://
> git.apache.org/heron
> >>>>
> >>>> ## Issue Tracking
> >>>>
> >>>> JIRA: Heron (HERON)
> >>>>
> >>>> ## Initial Committers
> >>>>
> >>>> * Andrew Jorgensen (andrew at andrewjorgensen dot com)
> >>>> * Ashvin Agrawal (ashvin at apache dot org)*
> >>>> * Avrilia Floratou (avrilia dot floratou at gmail dot com)
> >>>> * Bill Graham (billgraham at apache dot org)*
> >>>> * Brian Hatfield (bmhatfield at gmail dot com)
> >>>> * Chris Kellogg (cckellogg at gmail dot com)
> >>>> * Huijun Wu (huijun dot wu dot 2010 at gmail dot com)
> >>>> * Karthik Ramasamy (karthik at gmail dot com)
> >>>> * Maosong Fu (maosongfu at gmail dot com)
> >>>> * Neng Lu(freeneng at gmail dot com)
> >>>> * Runhang Li (obj dot runhang at gmail dot com)
> >>>> * Sanjeev Kulkarni (sanjeevrk at gmail dot com)
> >>>> * Supun Kamburugamuve (supun at apache dot org)*
> >>>> * Thomas Sun (tom dot ssf at gmail dot com)
> >>>> * Yaliang Wang (yaliang dot w dot wang at ieee dot org)
> >>>>
> >>>> ## Affiliations
> >>>>
> >>>> * Andrew Jorgensen (Google)
> >>>> * Ashvin Agrawal (Microsoft)
> >>>> * Avrilia Floratou (Microsoft)
> >>>> * Bill Graham (Twitter)
> >>>> * Brian Hatfield (Google)
> >>>> * Chris Kellogg (Twitter)
> >>>> * Huijun Wu (Twitter)
> >>>> * Karthik Ramasamy (Streamlio)
> >>>> * Maosong Fu (Twitter)
> >>>> * Neng Lu (Twitter)
> >>>> * Runhang Li (Twitter)
> >>>> * Sanjeev Kulkarni (Streamlio)
> >>>> * Supun Kamburugamuve (Indiana University)
> >>>> * Thomas Sun (Twitter)
> >>>> * Yaliang Wang (Twitter)
> >>>>
> >>>> ## Sponsors
> >>>>
> >>>> ### Champion
> >>>>
> >>>> * Julien Le Dem (julien at apache dot org)
> >>>>
> >>>> ### Nominated Mentors
> >>>>
> >>>> * Jake Farrell (jfarrell at apache dot org)
> >>>> * Jacques Nadeau (jacques at apache dot org)
> >>>> * Julien Le Dem (julien at apache dot org)
> >>>>
> >>>> ### Sponsoring Entity
> >>>>
> >>>> The Apache Incubator
> >>>>
> >>>> ### Footnotes
> >>>>
> >>>> 1 - Papers detailing Heron are available at
> http://dl.acm.org/citation
> >> .
> >>>> cfm?id=2742788 and http://sites.computer.org/debull/A15dec/p15.pdf.
> >>>> 2 - http://home.apache.org/phonebook.html?uid=billgraham
> >>>> 3 - http://home.apache.org/phonebook.html?uid=ashvin
> >>>> 4 - http://home.apache.org/phonebook.html?uid=supun
> >>>
> >>> ---------------------------------------------------------------------
> >>> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> >>> For additional commands, e-mail: general-help@incubator.apache.org
> >>>
> >>>
> >>
> >
> >
> >
> > --
> > Supun Kamburugamuve
> > Member, Apache Software Foundation; http://www.apache.org
> > E-mail: supun@apache.o <su...@gmail.com>rg;  Mobile: +1 812 219 2563
> > <(812)%20219-2563>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> For additional commands, e-mail: general-help@incubator.apache.org
>
>


-- 
~/William

Re: [PROPOSAL] Heron

["P. Taylor Goetz" <pt...@gmail.com>]

Hi Bill/Supun,

Sorry for not being a little more clear. I was asking more about how the Heron community would seek to engage with Storm community at the *community* level as opposed to the technical level (i.e. “Community over Code”).

I’ve been asked by many why this has never happened, and have always struggled to answer. Maybe you could help answer that question as well as if and how that might change if Heron were to incubate.

Another quick question: The proposal mentions Heron being used in production at Google, but some Google employees I recently spoke to seemed to contradict that. Could you explain? Note that’s nothing that would preclude the project from incubating, I’m just curious.

-Taylor

> On Jun 14, 2017, at 7:35 AM, Supun Kamburugamuve <su...@gmail.com> wrote:
> 
> Hi Taylor,
> 
> For me, one of the interesting differences between Heron and Storm is the
> execution model. Storm uses a shared memory model while Heron uses a
> process based model. It will be interesting to see how these two evolve.
> 
> Thanks,
> Supun..
> 
> On Mon, Jun 12, 2017 at 4:15 PM, Bill Graham <bi...@gmail.com> wrote:
> 
>> Hi Taylor,
>> 
>> Thanks for the mentor offer, we'd be glad to have your help.
>> 
>> I think the best place for collaboration would be around the evolution of
>> the API. In addition we plan to look more into DSL solutions which we could
>> potentially collaborate on. This could be Trident, or Beam or something
>> else, but there could be synergies for future development here.
>> 
>> thanks,
>> Bill
>> 
>> On Fri, Jun 9, 2017 at 8:53 PM, P. Taylor Goetz <pt...@gmail.com> wrote:
>> 
>>> Hi Bill,
>>> 
>>> Could you comment on how/if the Heron community would be willing to work
>>> with the Storm community? I've seen a number of new features in Storm
>> being
>>> ported to Heron, but I have yet to see any attempt by the Heron community
>>> to engage with the Apache Storm community.
>>> 
>>> I don't think it would be too far off to say that the relationship
>> between
>>> Heron and Apache Storm has been somewhat adversarial. The pre- and
>>> post-open sourcing marketing around Heron seemed, at least to me,
>> somewhat
>>> aggressively negative toward Storm.
>>> 
>>> As a peer to Apache Storm, how would the proposed "Apache Heron"
>> community
>>> work to collaborate with the Storm community? If Heron is adopting API
>>> changes in Storm, then it seems there is an opportunity for
>> collaboration.
>>> 
>>> Don't take any of this as an objection to incubating the project. I would
>>> support it. I would also be willing to be a mentor, if you would consider
>>> taking on another.
>>> 
>>> -Taylor
>>> 
>>>> On Jun 8, 2017, at 1:23 PM, Bill Graham <bi...@gmail.com> wrote:
>>>> 
>>>> Dear Apache Incubator Community,
>>>> 
>>>> We are excited to share our proposal for discussion and feedback
>>>> for entering Apache Incubation. Heron is a real-time, distributed,
>>>> fault-tolerant stream processing engine.
>>>> 
>>>> Our proposal can be found at https://wiki.apache.org/
>>> incubator/HeronProposal
>>>> and is included below.
>>>> 
>>>> 
>>>> Thank you,
>>>> 
>>>> Bill Graham on behalf of the Heron developers
>>>> 
>>>> 
>>>> # Heron Proposal
>>>> 
>>>> ## Abstract
>>>> Heron is a real-time, distributed, fault-tolerant stream processing
>>> engine
>>>> initially developed by Twitter.
>>>> 
>>>> ## Proposal
>>>> 
>>>> Heron is a real-time stream processing engine built for high
>> performance,
>>>> ease of manageability, performance predictability and developer
>>>> productivity[1]. We wish to develop a community around Heron to
>> increase
>>>> contributions and see Heron thrive in an open forum.
>>>> 
>>>> ## Background
>>>> 
>>>> Heron provides the ability for developers to compose directed acyclic
>>>> graphs (DAGs) of real-time query execution logic (i.e. a topology) and
>>>> submit the topology to execute on a pluggable job scheduling system
>>> (e.g.,
>>>> Apache Aurora, YARN, Marathon, etc). Users can employ either the native
>>>> Heron API or the Apache Storm API to develop the topology. Heron
>> supports
>>>> the Storm API for ease of migration, but beyond that Heron’s
>> architecture
>>>> differs considerably from Storm’s.
>>>> 
>>>> Users submit a topology to the scheduler using the Heron client, which
>>> uses
>>>> the Heron binary libraries to deploy all daemons required to run and
>>> manage
>>>> the topology. The topology therefore has no reliance on centrally
>> managed
>>>> Heron services, only on a generic job scheduling system, which lends
>>> itself
>>>> well to be run on top of Apache Aurora/Mesos or Apache Hadoop/YARN
>> (among
>>>> others).
>>>> 
>>>> The scheduler runs each topology as a job consisting of multiple
>>>> containers. One of the containers runs the topology master, responsible
>>> for
>>>> managing the topology. The remaining containers each runs a stream
>>> manager
>>>> responsible for data routing, a metrics manager that collects and
>> reports
>>>> various metrics and a number of processes called Heron instances which
>>> run
>>>> the user-defined logic on the stream of tuples. Parallelism is achieved
>>> via
>>>> process-based isolation of Heron instances, which provides predictable
>>>> performance while simplifying debugging. The containers are allocated
>> and
>>>> managed by the scheduler framework based on resource availability of
>>> nodes
>>>> in the cluster. The metadata for the topology, such as the physical
>> plan
>>>> and execution details, are stored in the pluggable Heron State Manager
>>>> (e.g. Apache ZooKeeper).
>>>> 
>>>> ## Rationale
>>>> 
>>>> Heron is a general-purpose, modular and extensible platform that can be
>>>> leveraged to support common, real-time analytics use cases. There is an
>>>> increasing demand for open-source, scalable real-time analytics
>> systems.
>>> We
>>>> believe that Heron can be leveraged by other organizations to build
>>>> streaming applications that can benefit from its robustness, high
>>>> performance, adaptability to cloud environments and ease of use.
>>> Moreover,
>>>> we hope that open-sourcing Heron will help to further evolve the
>>> technology
>>>> as the project attracts contributors with diverse backgrounds and areas
>>> of
>>>> expertise.
>>>> 
>>>> We believe the Apache foundation is a great fit as the long-term home
>> for
>>>> Heron, as it provides an established process for community-driven
>>>> development and decision making by consensus. This is exactly the model
>>> we
>>>> want for future Heron development.
>>>> 
>>>> ## Initial Goals
>>>> 
>>>> * Move the existing codebase, website, documentation, and mailing lists
>>> to
>>>> Apache-hosted infrastructure.
>>>> * Integrate with the Apache development process.
>>>> * Ensure all dependencies are compliant with Apache License version
>> 2.0.
>>>> * Incrementally develop and release per Apache guidelines.
>>>> 
>>>> ## Current Status
>>>> 
>>>> Heron is a stable project used in production at Twitter since 2014 and
>>> open
>>>> sourced under the ASL v2 license in 2016. The Heron source code is
>>>> currently hosted at github.com (https://github.com/twitter/heron),
>> which
>>>> will seed the Apache git repository.
>>>> 
>>>> ### Meritocracy
>>>> 
>>>> By submitting this incubator proposal, we’re expressing our intent to
>>> build
>>>> a diverse developer community around Heron that will conduct itself
>>>> according to The Apache Way and use a meritocratic means of building
>> it's
>>>> committer base. Several companies and universities have already
>> expressed
>>>> interest in and contributed to Heron. Our goal is to grow the Heron
>>>> community by encouraging open communication, contribution and
>>> participation
>>>> of all types, and ensuring that contributors are recognized
>>> appropriately.
>>>> 
>>>> ### Community
>>>> 
>>>> Heron is currently being used by Twitter, Google, Machine Zone and
>>>> ndustrial.io and has received significant contributions by Microsoft
>> and
>>>> Streamlio. By bringing Heron into the Apache ecosystem, we believe we
>> can
>>>> attract even more developers who are interested in creating real-time
>>>> systems to build the project's contributor base.
>>>> 
>>>> ### Core Developers
>>>> 
>>>> Current core developers are engineers from Twitter, Google, Microsoft
>> and
>>>> Streamlio.
>>>> 
>>>> ### Alignment
>>>> 
>>>> Heron utilizes a number of Apache technologies. Heron leverages Apache
>>>> ZooKeeper for coordination and has scheduler implementations to
>> integrate
>>>> with Apache Mesos, Apache Aurora and Apache Hadoop's YARN (via Apache
>>> REEF)
>>>> as well as spout implementations to integrate with Apache Kafka and
>>> metrics
>>>> implementations to integrate with Scribe. Heron also implements the
>>> Apache
>>>> Storm user-level API, which allows topologies written against Storm to
>>> run
>>>> in Heron. We believe that having Heron at Apache will help further the
>>>> growth of the streaming compute community, as well as encourage
>>> cooperation
>>>> and developer cross pollination with other Apache projects.
>>>> 
>>>> ## Known Risks
>>>> 
>>>> ### Orphaned Products
>>>> 
>>>> The risk of the Heron project being abandoned is minimal. It is used in
>>>> production at Twitter and Google and other companies are evaluating or
>>>> adopting it for production use.
>>>> 
>>>> ### Inexperience with Open Source
>>>> 
>>>> All of the core contributors to the project have considerable
>> experience
>>>> with open source software development. Bill Graham[2], Ashvin
>> Agrawal[3]
>>>> and Supun Kamburugamuve[4], committers on the project, are PMCs on
>> other
>>>> Apache projects and Bill and Ashvin have gone through the Apache
>>> incubator
>>>> process. Twitter has already donated numerous projects to the ASF
>> (e.g.,
>>>> Apache Mesos, Apache Aurora, Apache Parquet). We also plan to be
>> mentored
>>>> by experienced ASF members that can help with any roadblocks.
>>>> 
>>>> ### Homogenous Developers
>>>> 
>>>> Initial committers come from 5 separate organizations. Our intention is
>>>> increase the diversity of contributing developers and their
>> affiliations.
>>>> To date github contributions have come from approximately 50
>> contributors
>>>> from outside the Twitter team.
>>>> 
>>>> ### Reliance on Salaried Developers
>>>> 
>>>> It is expected that Heron development will occur on both salaried time
>>> and
>>>> on volunteer time. The majority of initial committers are paid by their
>>>> employers to contribute to this project. We are committed to recruiting
>>>> additional committers from other organizations as well as non-salaried
>>>> committers to join project.
>>>> 
>>>> ### Relationships with Other Apache Products
>>>> 
>>>> As mentioned in the Alignment section, Heron implements the Apache
>> Storm
>>>> API and integrates with multiple Apache schedulers (Apache Mesos,
>> Apache
>>>> Aurora and Apache Hadoop's YARN) as well as Apache ZooKeeper and Apache
>>>> Thrift.
>>>> 
>>>> ### An Excessive Fascination with the Apache Brand
>>>> 
>>>> Heron's popularity is growing in the streaming compute space and we are
>>>> long time supporters of the Apache brand. This proposal is not for the
>>>> purpose of generating publicity through. Rather, the primary benefits
>> to
>>>> joining Apache are those of community building and open decision making
>>>> outlined in the Rationale section.
>>>> 
>>>> ## Documentation
>>>> 
>>>> This proposal exists online as http://wiki.apache.org/
>>>> incubator/HeronProposal. Extensive documentation can be found on github
>>> at
>>>> https://twitter.github.io/heron and the source code is well
>> documented.
>>>> 
>>>> ## Source and Intellectual Property Submission Plan
>>>> 
>>>> The Heron codebase is currently hosted on Github:
>>>> https://github.com/twitter/heron. During incubation, the codebase will
>>> be
>>>> migrated to Apache infrastructure. The source code is already ASF 2.0
>>>> licensed.
>>>> 
>>>> ## External Dependencies
>>>> 
>>>> All external libraries have ASF 2.0 compatible licenses except for
>>> pylint.
>>>> The pylint library is GPL licensed, but is only used for pre-build
>> Python
>>>> style checks and is neither bundled with, nor relied upon by, the Heron
>>>> source or binary release artifacts.
>>>> 
>>>> ## Cryptography
>>>> 
>>>> Heron does not use any cryptography libraries.
>>>> 
>>>> ## Required Resources
>>>> 
>>>> ### Mailing lists
>>>> 
>>>> private@heron.incubator.apache.org (with moderated subscriptions)
>>>> dev@heron.incubator.apache.org
>>>> commits@heron.incubator.apache.org
>>>> user@heron.incubator.apache.org
>>>> 
>>>> ## Subversion Directory
>>>> 
>>>> Git is the preferred source control system: git://git.apache.org/heron
>>>> 
>>>> ## Issue Tracking
>>>> 
>>>> JIRA: Heron (HERON)
>>>> 
>>>> ## Initial Committers
>>>> 
>>>> * Andrew Jorgensen (andrew at andrewjorgensen dot com)
>>>> * Ashvin Agrawal (ashvin at apache dot org)*
>>>> * Avrilia Floratou (avrilia dot floratou at gmail dot com)
>>>> * Bill Graham (billgraham at apache dot org)*
>>>> * Brian Hatfield (bmhatfield at gmail dot com)
>>>> * Chris Kellogg (cckellogg at gmail dot com)
>>>> * Huijun Wu (huijun dot wu dot 2010 at gmail dot com)
>>>> * Karthik Ramasamy (karthik at gmail dot com)
>>>> * Maosong Fu (maosongfu at gmail dot com)
>>>> * Neng Lu(freeneng at gmail dot com)
>>>> * Runhang Li (obj dot runhang at gmail dot com)
>>>> * Sanjeev Kulkarni (sanjeevrk at gmail dot com)
>>>> * Supun Kamburugamuve (supun at apache dot org)*
>>>> * Thomas Sun (tom dot ssf at gmail dot com)
>>>> * Yaliang Wang (yaliang dot w dot wang at ieee dot org)
>>>> 
>>>> ## Affiliations
>>>> 
>>>> * Andrew Jorgensen (Google)
>>>> * Ashvin Agrawal (Microsoft)
>>>> * Avrilia Floratou (Microsoft)
>>>> * Bill Graham (Twitter)
>>>> * Brian Hatfield (Google)
>>>> * Chris Kellogg (Twitter)
>>>> * Huijun Wu (Twitter)
>>>> * Karthik Ramasamy (Streamlio)
>>>> * Maosong Fu (Twitter)
>>>> * Neng Lu (Twitter)
>>>> * Runhang Li (Twitter)
>>>> * Sanjeev Kulkarni (Streamlio)
>>>> * Supun Kamburugamuve (Indiana University)
>>>> * Thomas Sun (Twitter)
>>>> * Yaliang Wang (Twitter)
>>>> 
>>>> ## Sponsors
>>>> 
>>>> ### Champion
>>>> 
>>>> * Julien Le Dem (julien at apache dot org)
>>>> 
>>>> ### Nominated Mentors
>>>> 
>>>> * Jake Farrell (jfarrell at apache dot org)
>>>> * Jacques Nadeau (jacques at apache dot org)
>>>> * Julien Le Dem (julien at apache dot org)
>>>> 
>>>> ### Sponsoring Entity
>>>> 
>>>> The Apache Incubator
>>>> 
>>>> ### Footnotes
>>>> 
>>>> 1 - Papers detailing Heron are available at http://dl.acm.org/citation
>> .
>>>> cfm?id=2742788 and http://sites.computer.org/debull/A15dec/p15.pdf.
>>>> 2 - http://home.apache.org/phonebook.html?uid=billgraham
>>>> 3 - http://home.apache.org/phonebook.html?uid=ashvin
>>>> 4 - http://home.apache.org/phonebook.html?uid=supun
>>> 
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
>>> For additional commands, e-mail: general-help@incubator.apache.org
>>> 
>>> 
>> 
> 
> 
> 
> -- 
> Supun Kamburugamuve
> Member, Apache Software Foundation; http://www.apache.org
> E-mail: supun@apache.o <su...@gmail.com>rg;  Mobile: +1 812 219 2563
> <(812)%20219-2563>


---------------------------------------------------------------------
To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
For additional commands, e-mail: general-help@incubator.apache.org

Re: [PROPOSAL] Heron

[Supun Kamburugamuve <su...@gmail.com>]

Hi Taylor,

For me, one of the interesting differences between Heron and Storm is the
execution model. Storm uses a shared memory model while Heron uses a
process based model. It will be interesting to see how these two evolve.

Thanks,
Supun..

On Mon, Jun 12, 2017 at 4:15 PM, Bill Graham <bi...@gmail.com> wrote:

> Hi Taylor,
>
> Thanks for the mentor offer, we'd be glad to have your help.
>
> I think the best place for collaboration would be around the evolution of
> the API. In addition we plan to look more into DSL solutions which we could
> potentially collaborate on. This could be Trident, or Beam or something
> else, but there could be synergies for future development here.
>
> thanks,
> Bill
>
> On Fri, Jun 9, 2017 at 8:53 PM, P. Taylor Goetz <pt...@gmail.com> wrote:
>
> > Hi Bill,
> >
> > Could you comment on how/if the Heron community would be willing to work
> > with the Storm community? I've seen a number of new features in Storm
> being
> > ported to Heron, but I have yet to see any attempt by the Heron community
> > to engage with the Apache Storm community.
> >
> > I don't think it would be too far off to say that the relationship
> between
> > Heron and Apache Storm has been somewhat adversarial. The pre- and
> > post-open sourcing marketing around Heron seemed, at least to me,
> somewhat
> > aggressively negative toward Storm.
> >
> > As a peer to Apache Storm, how would the proposed "Apache Heron"
> community
> > work to collaborate with the Storm community? If Heron is adopting API
> > changes in Storm, then it seems there is an opportunity for
> collaboration.
> >
> > Don't take any of this as an objection to incubating the project. I would
> > support it. I would also be willing to be a mentor, if you would consider
> > taking on another.
> >
> > -Taylor
> >
> > > On Jun 8, 2017, at 1:23 PM, Bill Graham <bi...@gmail.com> wrote:
> > >
> > > Dear Apache Incubator Community,
> > >
> > > We are excited to share our proposal for discussion and feedback
> > > for entering Apache Incubation. Heron is a real-time, distributed,
> > > fault-tolerant stream processing engine.
> > >
> > > Our proposal can be found at https://wiki.apache.org/
> > incubator/HeronProposal
> > > and is included below.
> > >
> > >
> > > Thank you,
> > >
> > > Bill Graham on behalf of the Heron developers
> > >
> > >
> > > # Heron Proposal
> > >
> > > ## Abstract
> > > Heron is a real-time, distributed, fault-tolerant stream processing
> > engine
> > > initially developed by Twitter.
> > >
> > > ## Proposal
> > >
> > > Heron is a real-time stream processing engine built for high
> performance,
> > > ease of manageability, performance predictability and developer
> > > productivity[1]. We wish to develop a community around Heron to
> increase
> > > contributions and see Heron thrive in an open forum.
> > >
> > > ## Background
> > >
> > > Heron provides the ability for developers to compose directed acyclic
> > > graphs (DAGs) of real-time query execution logic (i.e. a topology) and
> > > submit the topology to execute on a pluggable job scheduling system
> > (e.g.,
> > > Apache Aurora, YARN, Marathon, etc). Users can employ either the native
> > > Heron API or the Apache Storm API to develop the topology. Heron
> supports
> > > the Storm API for ease of migration, but beyond that Heron’s
> architecture
> > > differs considerably from Storm’s.
> > >
> > > Users submit a topology to the scheduler using the Heron client, which
> > uses
> > > the Heron binary libraries to deploy all daemons required to run and
> > manage
> > > the topology. The topology therefore has no reliance on centrally
> managed
> > > Heron services, only on a generic job scheduling system, which lends
> > itself
> > > well to be run on top of Apache Aurora/Mesos or Apache Hadoop/YARN
> (among
> > > others).
> > >
> > > The scheduler runs each topology as a job consisting of multiple
> > > containers. One of the containers runs the topology master, responsible
> > for
> > > managing the topology. The remaining containers each runs a stream
> > manager
> > > responsible for data routing, a metrics manager that collects and
> reports
> > > various metrics and a number of processes called Heron instances which
> > run
> > > the user-defined logic on the stream of tuples. Parallelism is achieved
> > via
> > > process-based isolation of Heron instances, which provides predictable
> > > performance while simplifying debugging. The containers are allocated
> and
> > > managed by the scheduler framework based on resource availability of
> > nodes
> > > in the cluster. The metadata for the topology, such as the physical
> plan
> > > and execution details, are stored in the pluggable Heron State Manager
> > > (e.g. Apache ZooKeeper).
> > >
> > > ## Rationale
> > >
> > > Heron is a general-purpose, modular and extensible platform that can be
> > > leveraged to support common, real-time analytics use cases. There is an
> > > increasing demand for open-source, scalable real-time analytics
> systems.
> > We
> > > believe that Heron can be leveraged by other organizations to build
> > > streaming applications that can benefit from its robustness, high
> > > performance, adaptability to cloud environments and ease of use.
> > Moreover,
> > > we hope that open-sourcing Heron will help to further evolve the
> > technology
> > > as the project attracts contributors with diverse backgrounds and areas
> > of
> > > expertise.
> > >
> > > We believe the Apache foundation is a great fit as the long-term home
> for
> > > Heron, as it provides an established process for community-driven
> > > development and decision making by consensus. This is exactly the model
> > we
> > > want for future Heron development.
> > >
> > > ## Initial Goals
> > >
> > > * Move the existing codebase, website, documentation, and mailing lists
> > to
> > > Apache-hosted infrastructure.
> > > * Integrate with the Apache development process.
> > > * Ensure all dependencies are compliant with Apache License version
> 2.0.
> > > * Incrementally develop and release per Apache guidelines.
> > >
> > > ## Current Status
> > >
> > > Heron is a stable project used in production at Twitter since 2014 and
> > open
> > > sourced under the ASL v2 license in 2016. The Heron source code is
> > > currently hosted at github.com (https://github.com/twitter/heron),
> which
> > > will seed the Apache git repository.
> > >
> > > ### Meritocracy
> > >
> > > By submitting this incubator proposal, we’re expressing our intent to
> > build
> > > a diverse developer community around Heron that will conduct itself
> > > according to The Apache Way and use a meritocratic means of building
> it's
> > > committer base. Several companies and universities have already
> expressed
> > > interest in and contributed to Heron. Our goal is to grow the Heron
> > > community by encouraging open communication, contribution and
> > participation
> > > of all types, and ensuring that contributors are recognized
> > appropriately.
> > >
> > > ### Community
> > >
> > > Heron is currently being used by Twitter, Google, Machine Zone and
> > > ndustrial.io and has received significant contributions by Microsoft
> and
> > > Streamlio. By bringing Heron into the Apache ecosystem, we believe we
> can
> > > attract even more developers who are interested in creating real-time
> > > systems to build the project's contributor base.
> > >
> > > ### Core Developers
> > >
> > > Current core developers are engineers from Twitter, Google, Microsoft
> and
> > > Streamlio.
> > >
> > > ### Alignment
> > >
> > > Heron utilizes a number of Apache technologies. Heron leverages Apache
> > > ZooKeeper for coordination and has scheduler implementations to
> integrate
> > > with Apache Mesos, Apache Aurora and Apache Hadoop's YARN (via Apache
> > REEF)
> > > as well as spout implementations to integrate with Apache Kafka and
> > metrics
> > > implementations to integrate with Scribe. Heron also implements the
> > Apache
> > > Storm user-level API, which allows topologies written against Storm to
> > run
> > > in Heron. We believe that having Heron at Apache will help further the
> > > growth of the streaming compute community, as well as encourage
> > cooperation
> > > and developer cross pollination with other Apache projects.
> > >
> > > ## Known Risks
> > >
> > > ### Orphaned Products
> > >
> > > The risk of the Heron project being abandoned is minimal. It is used in
> > > production at Twitter and Google and other companies are evaluating or
> > > adopting it for production use.
> > >
> > > ### Inexperience with Open Source
> > >
> > > All of the core contributors to the project have considerable
> experience
> > > with open source software development. Bill Graham[2], Ashvin
> Agrawal[3]
> > > and Supun Kamburugamuve[4], committers on the project, are PMCs on
> other
> > > Apache projects and Bill and Ashvin have gone through the Apache
> > incubator
> > > process. Twitter has already donated numerous projects to the ASF
> (e.g.,
> > > Apache Mesos, Apache Aurora, Apache Parquet). We also plan to be
> mentored
> > > by experienced ASF members that can help with any roadblocks.
> > >
> > > ### Homogenous Developers
> > >
> > > Initial committers come from 5 separate organizations. Our intention is
> > > increase the diversity of contributing developers and their
> affiliations.
> > > To date github contributions have come from approximately 50
> contributors
> > > from outside the Twitter team.
> > >
> > > ### Reliance on Salaried Developers
> > >
> > > It is expected that Heron development will occur on both salaried time
> > and
> > > on volunteer time. The majority of initial committers are paid by their
> > > employers to contribute to this project. We are committed to recruiting
> > > additional committers from other organizations as well as non-salaried
> > > committers to join project.
> > >
> > > ### Relationships with Other Apache Products
> > >
> > > As mentioned in the Alignment section, Heron implements the Apache
> Storm
> > > API and integrates with multiple Apache schedulers (Apache Mesos,
> Apache
> > > Aurora and Apache Hadoop's YARN) as well as Apache ZooKeeper and Apache
> > > Thrift.
> > >
> > > ### An Excessive Fascination with the Apache Brand
> > >
> > > Heron's popularity is growing in the streaming compute space and we are
> > > long time supporters of the Apache brand. This proposal is not for the
> > > purpose of generating publicity through. Rather, the primary benefits
> to
> > > joining Apache are those of community building and open decision making
> > > outlined in the Rationale section.
> > >
> > > ## Documentation
> > >
> > > This proposal exists online as http://wiki.apache.org/
> > > incubator/HeronProposal. Extensive documentation can be found on github
> > at
> > > https://twitter.github.io/heron and the source code is well
> documented.
> > >
> > > ## Source and Intellectual Property Submission Plan
> > >
> > > The Heron codebase is currently hosted on Github:
> > > https://github.com/twitter/heron. During incubation, the codebase will
> > be
> > > migrated to Apache infrastructure. The source code is already ASF 2.0
> > > licensed.
> > >
> > > ## External Dependencies
> > >
> > > All external libraries have ASF 2.0 compatible licenses except for
> > pylint.
> > > The pylint library is GPL licensed, but is only used for pre-build
> Python
> > > style checks and is neither bundled with, nor relied upon by, the Heron
> > > source or binary release artifacts.
> > >
> > > ## Cryptography
> > >
> > > Heron does not use any cryptography libraries.
> > >
> > > ## Required Resources
> > >
> > > ### Mailing lists
> > >
> > > private@heron.incubator.apache.org (with moderated subscriptions)
> > > dev@heron.incubator.apache.org
> > > commits@heron.incubator.apache.org
> > > user@heron.incubator.apache.org
> > >
> > > ## Subversion Directory
> > >
> > > Git is the preferred source control system: git://git.apache.org/heron
> > >
> > > ## Issue Tracking
> > >
> > > JIRA: Heron (HERON)
> > >
> > > ## Initial Committers
> > >
> > > * Andrew Jorgensen (andrew at andrewjorgensen dot com)
> > > * Ashvin Agrawal (ashvin at apache dot org)*
> > > * Avrilia Floratou (avrilia dot floratou at gmail dot com)
> > > * Bill Graham (billgraham at apache dot org)*
> > > * Brian Hatfield (bmhatfield at gmail dot com)
> > > * Chris Kellogg (cckellogg at gmail dot com)
> > > * Huijun Wu (huijun dot wu dot 2010 at gmail dot com)
> > > * Karthik Ramasamy (karthik at gmail dot com)
> > > * Maosong Fu (maosongfu at gmail dot com)
> > > * Neng Lu(freeneng at gmail dot com)
> > > * Runhang Li (obj dot runhang at gmail dot com)
> > > * Sanjeev Kulkarni (sanjeevrk at gmail dot com)
> > > * Supun Kamburugamuve (supun at apache dot org)*
> > > * Thomas Sun (tom dot ssf at gmail dot com)
> > > * Yaliang Wang (yaliang dot w dot wang at ieee dot org)
> > >
> > > ## Affiliations
> > >
> > > * Andrew Jorgensen (Google)
> > > * Ashvin Agrawal (Microsoft)
> > > * Avrilia Floratou (Microsoft)
> > > * Bill Graham (Twitter)
> > > * Brian Hatfield (Google)
> > > * Chris Kellogg (Twitter)
> > > * Huijun Wu (Twitter)
> > > * Karthik Ramasamy (Streamlio)
> > > * Maosong Fu (Twitter)
> > > * Neng Lu (Twitter)
> > > * Runhang Li (Twitter)
> > > * Sanjeev Kulkarni (Streamlio)
> > > * Supun Kamburugamuve (Indiana University)
> > > * Thomas Sun (Twitter)
> > > * Yaliang Wang (Twitter)
> > >
> > > ## Sponsors
> > >
> > > ### Champion
> > >
> > > * Julien Le Dem (julien at apache dot org)
> > >
> > > ### Nominated Mentors
> > >
> > > * Jake Farrell (jfarrell at apache dot org)
> > > * Jacques Nadeau (jacques at apache dot org)
> > > * Julien Le Dem (julien at apache dot org)
> > >
> > > ### Sponsoring Entity
> > >
> > > The Apache Incubator
> > >
> > > ### Footnotes
> > >
> > > 1 - Papers detailing Heron are available at http://dl.acm.org/citation
> .
> > > cfm?id=2742788 and http://sites.computer.org/debull/A15dec/p15.pdf.
> > > 2 - http://home.apache.org/phonebook.html?uid=billgraham
> > > 3 - http://home.apache.org/phonebook.html?uid=ashvin
> > > 4 - http://home.apache.org/phonebook.html?uid=supun
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> > For additional commands, e-mail: general-help@incubator.apache.org
> >
> >
>



-- 
Supun Kamburugamuve
Member, Apache Software Foundation; http://www.apache.org
E-mail: supun@apache.o <su...@gmail.com>rg;  Mobile: +1 812 219 2563
<(812)%20219-2563>

Re: [PROPOSAL] Heron

[Bill Graham <bi...@gmail.com>]

Hi Taylor,

Thanks for the mentor offer, we'd be glad to have your help.

I think the best place for collaboration would be around the evolution of
the API. In addition we plan to look more into DSL solutions which we could
potentially collaborate on. This could be Trident, or Beam or something
else, but there could be synergies for future development here.

thanks,
Bill

On Fri, Jun 9, 2017 at 8:53 PM, P. Taylor Goetz <pt...@gmail.com> wrote:

> Hi Bill,
>
> Could you comment on how/if the Heron community would be willing to work
> with the Storm community? I've seen a number of new features in Storm being
> ported to Heron, but I have yet to see any attempt by the Heron community
> to engage with the Apache Storm community.
>
> I don't think it would be too far off to say that the relationship between
> Heron and Apache Storm has been somewhat adversarial. The pre- and
> post-open sourcing marketing around Heron seemed, at least to me, somewhat
> aggressively negative toward Storm.
>
> As a peer to Apache Storm, how would the proposed "Apache Heron" community
> work to collaborate with the Storm community? If Heron is adopting API
> changes in Storm, then it seems there is an opportunity for collaboration.
>
> Don't take any of this as an objection to incubating the project. I would
> support it. I would also be willing to be a mentor, if you would consider
> taking on another.
>
> -Taylor
>
> > On Jun 8, 2017, at 1:23 PM, Bill Graham <bi...@gmail.com> wrote:
> >
> > Dear Apache Incubator Community,
> >
> > We are excited to share our proposal for discussion and feedback
> > for entering Apache Incubation. Heron is a real-time, distributed,
> > fault-tolerant stream processing engine.
> >
> > Our proposal can be found at https://wiki.apache.org/
> incubator/HeronProposal
> > and is included below.
> >
> >
> > Thank you,
> >
> > Bill Graham on behalf of the Heron developers
> >
> >
> > # Heron Proposal
> >
> > ## Abstract
> > Heron is a real-time, distributed, fault-tolerant stream processing
> engine
> > initially developed by Twitter.
> >
> > ## Proposal
> >
> > Heron is a real-time stream processing engine built for high performance,
> > ease of manageability, performance predictability and developer
> > productivity[1]. We wish to develop a community around Heron to increase
> > contributions and see Heron thrive in an open forum.
> >
> > ## Background
> >
> > Heron provides the ability for developers to compose directed acyclic
> > graphs (DAGs) of real-time query execution logic (i.e. a topology) and
> > submit the topology to execute on a pluggable job scheduling system
> (e.g.,
> > Apache Aurora, YARN, Marathon, etc). Users can employ either the native
> > Heron API or the Apache Storm API to develop the topology. Heron supports
> > the Storm API for ease of migration, but beyond that Heron’s architecture
> > differs considerably from Storm’s.
> >
> > Users submit a topology to the scheduler using the Heron client, which
> uses
> > the Heron binary libraries to deploy all daemons required to run and
> manage
> > the topology. The topology therefore has no reliance on centrally managed
> > Heron services, only on a generic job scheduling system, which lends
> itself
> > well to be run on top of Apache Aurora/Mesos or Apache Hadoop/YARN (among
> > others).
> >
> > The scheduler runs each topology as a job consisting of multiple
> > containers. One of the containers runs the topology master, responsible
> for
> > managing the topology. The remaining containers each runs a stream
> manager
> > responsible for data routing, a metrics manager that collects and reports
> > various metrics and a number of processes called Heron instances which
> run
> > the user-defined logic on the stream of tuples. Parallelism is achieved
> via
> > process-based isolation of Heron instances, which provides predictable
> > performance while simplifying debugging. The containers are allocated and
> > managed by the scheduler framework based on resource availability of
> nodes
> > in the cluster. The metadata for the topology, such as the physical plan
> > and execution details, are stored in the pluggable Heron State Manager
> > (e.g. Apache ZooKeeper).
> >
> > ## Rationale
> >
> > Heron is a general-purpose, modular and extensible platform that can be
> > leveraged to support common, real-time analytics use cases. There is an
> > increasing demand for open-source, scalable real-time analytics systems.
> We
> > believe that Heron can be leveraged by other organizations to build
> > streaming applications that can benefit from its robustness, high
> > performance, adaptability to cloud environments and ease of use.
> Moreover,
> > we hope that open-sourcing Heron will help to further evolve the
> technology
> > as the project attracts contributors with diverse backgrounds and areas
> of
> > expertise.
> >
> > We believe the Apache foundation is a great fit as the long-term home for
> > Heron, as it provides an established process for community-driven
> > development and decision making by consensus. This is exactly the model
> we
> > want for future Heron development.
> >
> > ## Initial Goals
> >
> > * Move the existing codebase, website, documentation, and mailing lists
> to
> > Apache-hosted infrastructure.
> > * Integrate with the Apache development process.
> > * Ensure all dependencies are compliant with Apache License version 2.0.
> > * Incrementally develop and release per Apache guidelines.
> >
> > ## Current Status
> >
> > Heron is a stable project used in production at Twitter since 2014 and
> open
> > sourced under the ASL v2 license in 2016. The Heron source code is
> > currently hosted at github.com (https://github.com/twitter/heron), which
> > will seed the Apache git repository.
> >
> > ### Meritocracy
> >
> > By submitting this incubator proposal, we’re expressing our intent to
> build
> > a diverse developer community around Heron that will conduct itself
> > according to The Apache Way and use a meritocratic means of building it's
> > committer base. Several companies and universities have already expressed
> > interest in and contributed to Heron. Our goal is to grow the Heron
> > community by encouraging open communication, contribution and
> participation
> > of all types, and ensuring that contributors are recognized
> appropriately.
> >
> > ### Community
> >
> > Heron is currently being used by Twitter, Google, Machine Zone and
> > ndustrial.io and has received significant contributions by Microsoft and
> > Streamlio. By bringing Heron into the Apache ecosystem, we believe we can
> > attract even more developers who are interested in creating real-time
> > systems to build the project's contributor base.
> >
> > ### Core Developers
> >
> > Current core developers are engineers from Twitter, Google, Microsoft and
> > Streamlio.
> >
> > ### Alignment
> >
> > Heron utilizes a number of Apache technologies. Heron leverages Apache
> > ZooKeeper for coordination and has scheduler implementations to integrate
> > with Apache Mesos, Apache Aurora and Apache Hadoop's YARN (via Apache
> REEF)
> > as well as spout implementations to integrate with Apache Kafka and
> metrics
> > implementations to integrate with Scribe. Heron also implements the
> Apache
> > Storm user-level API, which allows topologies written against Storm to
> run
> > in Heron. We believe that having Heron at Apache will help further the
> > growth of the streaming compute community, as well as encourage
> cooperation
> > and developer cross pollination with other Apache projects.
> >
> > ## Known Risks
> >
> > ### Orphaned Products
> >
> > The risk of the Heron project being abandoned is minimal. It is used in
> > production at Twitter and Google and other companies are evaluating or
> > adopting it for production use.
> >
> > ### Inexperience with Open Source
> >
> > All of the core contributors to the project have considerable experience
> > with open source software development. Bill Graham[2], Ashvin Agrawal[3]
> > and Supun Kamburugamuve[4], committers on the project, are PMCs on other
> > Apache projects and Bill and Ashvin have gone through the Apache
> incubator
> > process. Twitter has already donated numerous projects to the ASF (e.g.,
> > Apache Mesos, Apache Aurora, Apache Parquet). We also plan to be mentored
> > by experienced ASF members that can help with any roadblocks.
> >
> > ### Homogenous Developers
> >
> > Initial committers come from 5 separate organizations. Our intention is
> > increase the diversity of contributing developers and their affiliations.
> > To date github contributions have come from approximately 50 contributors
> > from outside the Twitter team.
> >
> > ### Reliance on Salaried Developers
> >
> > It is expected that Heron development will occur on both salaried time
> and
> > on volunteer time. The majority of initial committers are paid by their
> > employers to contribute to this project. We are committed to recruiting
> > additional committers from other organizations as well as non-salaried
> > committers to join project.
> >
> > ### Relationships with Other Apache Products
> >
> > As mentioned in the Alignment section, Heron implements the Apache Storm
> > API and integrates with multiple Apache schedulers (Apache Mesos, Apache
> > Aurora and Apache Hadoop's YARN) as well as Apache ZooKeeper and Apache
> > Thrift.
> >
> > ### An Excessive Fascination with the Apache Brand
> >
> > Heron's popularity is growing in the streaming compute space and we are
> > long time supporters of the Apache brand. This proposal is not for the
> > purpose of generating publicity through. Rather, the primary benefits to
> > joining Apache are those of community building and open decision making
> > outlined in the Rationale section.
> >
> > ## Documentation
> >
> > This proposal exists online as http://wiki.apache.org/
> > incubator/HeronProposal. Extensive documentation can be found on github
> at
> > https://twitter.github.io/heron and the source code is well documented.
> >
> > ## Source and Intellectual Property Submission Plan
> >
> > The Heron codebase is currently hosted on Github:
> > https://github.com/twitter/heron. During incubation, the codebase will
> be
> > migrated to Apache infrastructure. The source code is already ASF 2.0
> > licensed.
> >
> > ## External Dependencies
> >
> > All external libraries have ASF 2.0 compatible licenses except for
> pylint.
> > The pylint library is GPL licensed, but is only used for pre-build Python
> > style checks and is neither bundled with, nor relied upon by, the Heron
> > source or binary release artifacts.
> >
> > ## Cryptography
> >
> > Heron does not use any cryptography libraries.
> >
> > ## Required Resources
> >
> > ### Mailing lists
> >
> > private@heron.incubator.apache.org (with moderated subscriptions)
> > dev@heron.incubator.apache.org
> > commits@heron.incubator.apache.org
> > user@heron.incubator.apache.org
> >
> > ## Subversion Directory
> >
> > Git is the preferred source control system: git://git.apache.org/heron
> >
> > ## Issue Tracking
> >
> > JIRA: Heron (HERON)
> >
> > ## Initial Committers
> >
> > * Andrew Jorgensen (andrew at andrewjorgensen dot com)
> > * Ashvin Agrawal (ashvin at apache dot org)*
> > * Avrilia Floratou (avrilia dot floratou at gmail dot com)
> > * Bill Graham (billgraham at apache dot org)*
> > * Brian Hatfield (bmhatfield at gmail dot com)
> > * Chris Kellogg (cckellogg at gmail dot com)
> > * Huijun Wu (huijun dot wu dot 2010 at gmail dot com)
> > * Karthik Ramasamy (karthik at gmail dot com)
> > * Maosong Fu (maosongfu at gmail dot com)
> > * Neng Lu(freeneng at gmail dot com)
> > * Runhang Li (obj dot runhang at gmail dot com)
> > * Sanjeev Kulkarni (sanjeevrk at gmail dot com)
> > * Supun Kamburugamuve (supun at apache dot org)*
> > * Thomas Sun (tom dot ssf at gmail dot com)
> > * Yaliang Wang (yaliang dot w dot wang at ieee dot org)
> >
> > ## Affiliations
> >
> > * Andrew Jorgensen (Google)
> > * Ashvin Agrawal (Microsoft)
> > * Avrilia Floratou (Microsoft)
> > * Bill Graham (Twitter)
> > * Brian Hatfield (Google)
> > * Chris Kellogg (Twitter)
> > * Huijun Wu (Twitter)
> > * Karthik Ramasamy (Streamlio)
> > * Maosong Fu (Twitter)
> > * Neng Lu (Twitter)
> > * Runhang Li (Twitter)
> > * Sanjeev Kulkarni (Streamlio)
> > * Supun Kamburugamuve (Indiana University)
> > * Thomas Sun (Twitter)
> > * Yaliang Wang (Twitter)
> >
> > ## Sponsors
> >
> > ### Champion
> >
> > * Julien Le Dem (julien at apache dot org)
> >
> > ### Nominated Mentors
> >
> > * Jake Farrell (jfarrell at apache dot org)
> > * Jacques Nadeau (jacques at apache dot org)
> > * Julien Le Dem (julien at apache dot org)
> >
> > ### Sponsoring Entity
> >
> > The Apache Incubator
> >
> > ### Footnotes
> >
> > 1 - Papers detailing Heron are available at http://dl.acm.org/citation.
> > cfm?id=2742788 and http://sites.computer.org/debull/A15dec/p15.pdf.
> > 2 - http://home.apache.org/phonebook.html?uid=billgraham
> > 3 - http://home.apache.org/phonebook.html?uid=ashvin
> > 4 - http://home.apache.org/phonebook.html?uid=supun
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> For additional commands, e-mail: general-help@incubator.apache.org
>
>

Re: [PROPOSAL] Heron

["P. Taylor Goetz" <pt...@gmail.com>]

Hi Bill,

Could you comment on how/if the Heron community would be willing to work with the Storm community? I've seen a number of new features in Storm being ported to Heron, but I have yet to see any attempt by the Heron community to engage with the Apache Storm community.

I don't think it would be too far off to say that the relationship between Heron and Apache Storm has been somewhat adversarial. The pre- and post-open sourcing marketing around Heron seemed, at least to me, somewhat aggressively negative toward Storm.

As a peer to Apache Storm, how would the proposed "Apache Heron" community work to collaborate with the Storm community? If Heron is adopting API changes in Storm, then it seems there is an opportunity for collaboration.

Don't take any of this as an objection to incubating the project. I would support it. I would also be willing to be a mentor, if you would consider taking on another.

-Taylor

> On Jun 8, 2017, at 1:23 PM, Bill Graham <bi...@gmail.com> wrote:
> 
> Dear Apache Incubator Community,
> 
> We are excited to share our proposal for discussion and feedback
> for entering Apache Incubation. Heron is a real-time, distributed,
> fault-tolerant stream processing engine.
> 
> Our proposal can be found at https://wiki.apache.org/incubator/HeronProposal
> and is included below.
> 
> 
> Thank you,
> 
> Bill Graham on behalf of the Heron developers
> 
> 
> # Heron Proposal
> 
> ## Abstract
> Heron is a real-time, distributed, fault-tolerant stream processing engine
> initially developed by Twitter.
> 
> ## Proposal
> 
> Heron is a real-time stream processing engine built for high performance,
> ease of manageability, performance predictability and developer
> productivity[1]. We wish to develop a community around Heron to increase
> contributions and see Heron thrive in an open forum.
> 
> ## Background
> 
> Heron provides the ability for developers to compose directed acyclic
> graphs (DAGs) of real-time query execution logic (i.e. a topology) and
> submit the topology to execute on a pluggable job scheduling system (e.g.,
> Apache Aurora, YARN, Marathon, etc). Users can employ either the native
> Heron API or the Apache Storm API to develop the topology. Heron supports
> the Storm API for ease of migration, but beyond that Heron’s architecture
> differs considerably from Storm’s.
> 
> Users submit a topology to the scheduler using the Heron client, which uses
> the Heron binary libraries to deploy all daemons required to run and manage
> the topology. The topology therefore has no reliance on centrally managed
> Heron services, only on a generic job scheduling system, which lends itself
> well to be run on top of Apache Aurora/Mesos or Apache Hadoop/YARN (among
> others).
> 
> The scheduler runs each topology as a job consisting of multiple
> containers. One of the containers runs the topology master, responsible for
> managing the topology. The remaining containers each runs a stream manager
> responsible for data routing, a metrics manager that collects and reports
> various metrics and a number of processes called Heron instances which run
> the user-defined logic on the stream of tuples. Parallelism is achieved via
> process-based isolation of Heron instances, which provides predictable
> performance while simplifying debugging. The containers are allocated and
> managed by the scheduler framework based on resource availability of nodes
> in the cluster. The metadata for the topology, such as the physical plan
> and execution details, are stored in the pluggable Heron State Manager
> (e.g. Apache ZooKeeper).
> 
> ## Rationale
> 
> Heron is a general-purpose, modular and extensible platform that can be
> leveraged to support common, real-time analytics use cases. There is an
> increasing demand for open-source, scalable real-time analytics systems. We
> believe that Heron can be leveraged by other organizations to build
> streaming applications that can benefit from its robustness, high
> performance, adaptability to cloud environments and ease of use. Moreover,
> we hope that open-sourcing Heron will help to further evolve the technology
> as the project attracts contributors with diverse backgrounds and areas of
> expertise.
> 
> We believe the Apache foundation is a great fit as the long-term home for
> Heron, as it provides an established process for community-driven
> development and decision making by consensus. This is exactly the model we
> want for future Heron development.
> 
> ## Initial Goals
> 
> * Move the existing codebase, website, documentation, and mailing lists to
> Apache-hosted infrastructure.
> * Integrate with the Apache development process.
> * Ensure all dependencies are compliant with Apache License version 2.0.
> * Incrementally develop and release per Apache guidelines.
> 
> ## Current Status
> 
> Heron is a stable project used in production at Twitter since 2014 and open
> sourced under the ASL v2 license in 2016. The Heron source code is
> currently hosted at github.com (https://github.com/twitter/heron), which
> will seed the Apache git repository.
> 
> ### Meritocracy
> 
> By submitting this incubator proposal, we’re expressing our intent to build
> a diverse developer community around Heron that will conduct itself
> according to The Apache Way and use a meritocratic means of building it's
> committer base. Several companies and universities have already expressed
> interest in and contributed to Heron. Our goal is to grow the Heron
> community by encouraging open communication, contribution and participation
> of all types, and ensuring that contributors are recognized appropriately.
> 
> ### Community
> 
> Heron is currently being used by Twitter, Google, Machine Zone and
> ndustrial.io and has received significant contributions by Microsoft and
> Streamlio. By bringing Heron into the Apache ecosystem, we believe we can
> attract even more developers who are interested in creating real-time
> systems to build the project's contributor base.
> 
> ### Core Developers
> 
> Current core developers are engineers from Twitter, Google, Microsoft and
> Streamlio.
> 
> ### Alignment
> 
> Heron utilizes a number of Apache technologies. Heron leverages Apache
> ZooKeeper for coordination and has scheduler implementations to integrate
> with Apache Mesos, Apache Aurora and Apache Hadoop's YARN (via Apache REEF)
> as well as spout implementations to integrate with Apache Kafka and metrics
> implementations to integrate with Scribe. Heron also implements the Apache
> Storm user-level API, which allows topologies written against Storm to run
> in Heron. We believe that having Heron at Apache will help further the
> growth of the streaming compute community, as well as encourage cooperation
> and developer cross pollination with other Apache projects.
> 
> ## Known Risks
> 
> ### Orphaned Products
> 
> The risk of the Heron project being abandoned is minimal. It is used in
> production at Twitter and Google and other companies are evaluating or
> adopting it for production use.
> 
> ### Inexperience with Open Source
> 
> All of the core contributors to the project have considerable experience
> with open source software development. Bill Graham[2], Ashvin Agrawal[3]
> and Supun Kamburugamuve[4], committers on the project, are PMCs on other
> Apache projects and Bill and Ashvin have gone through the Apache incubator
> process. Twitter has already donated numerous projects to the ASF (e.g.,
> Apache Mesos, Apache Aurora, Apache Parquet). We also plan to be mentored
> by experienced ASF members that can help with any roadblocks.
> 
> ### Homogenous Developers
> 
> Initial committers come from 5 separate organizations. Our intention is
> increase the diversity of contributing developers and their affiliations.
> To date github contributions have come from approximately 50 contributors
> from outside the Twitter team.
> 
> ### Reliance on Salaried Developers
> 
> It is expected that Heron development will occur on both salaried time and
> on volunteer time. The majority of initial committers are paid by their
> employers to contribute to this project. We are committed to recruiting
> additional committers from other organizations as well as non-salaried
> committers to join project.
> 
> ### Relationships with Other Apache Products
> 
> As mentioned in the Alignment section, Heron implements the Apache Storm
> API and integrates with multiple Apache schedulers (Apache Mesos, Apache
> Aurora and Apache Hadoop's YARN) as well as Apache ZooKeeper and Apache
> Thrift.
> 
> ### An Excessive Fascination with the Apache Brand
> 
> Heron's popularity is growing in the streaming compute space and we are
> long time supporters of the Apache brand. This proposal is not for the
> purpose of generating publicity through. Rather, the primary benefits to
> joining Apache are those of community building and open decision making
> outlined in the Rationale section.
> 
> ## Documentation
> 
> This proposal exists online as http://wiki.apache.org/
> incubator/HeronProposal. Extensive documentation can be found on github at
> https://twitter.github.io/heron and the source code is well documented.
> 
> ## Source and Intellectual Property Submission Plan
> 
> The Heron codebase is currently hosted on Github:
> https://github.com/twitter/heron. During incubation, the codebase will be
> migrated to Apache infrastructure. The source code is already ASF 2.0
> licensed.
> 
> ## External Dependencies
> 
> All external libraries have ASF 2.0 compatible licenses except for pylint.
> The pylint library is GPL licensed, but is only used for pre-build Python
> style checks and is neither bundled with, nor relied upon by, the Heron
> source or binary release artifacts.
> 
> ## Cryptography
> 
> Heron does not use any cryptography libraries.
> 
> ## Required Resources
> 
> ### Mailing lists
> 
> private@heron.incubator.apache.org (with moderated subscriptions)
> dev@heron.incubator.apache.org
> commits@heron.incubator.apache.org
> user@heron.incubator.apache.org
> 
> ## Subversion Directory
> 
> Git is the preferred source control system: git://git.apache.org/heron
> 
> ## Issue Tracking
> 
> JIRA: Heron (HERON)
> 
> ## Initial Committers
> 
> * Andrew Jorgensen (andrew at andrewjorgensen dot com)
> * Ashvin Agrawal (ashvin at apache dot org)*
> * Avrilia Floratou (avrilia dot floratou at gmail dot com)
> * Bill Graham (billgraham at apache dot org)*
> * Brian Hatfield (bmhatfield at gmail dot com)
> * Chris Kellogg (cckellogg at gmail dot com)
> * Huijun Wu (huijun dot wu dot 2010 at gmail dot com)
> * Karthik Ramasamy (karthik at gmail dot com)
> * Maosong Fu (maosongfu at gmail dot com)
> * Neng Lu(freeneng at gmail dot com)
> * Runhang Li (obj dot runhang at gmail dot com)
> * Sanjeev Kulkarni (sanjeevrk at gmail dot com)
> * Supun Kamburugamuve (supun at apache dot org)*
> * Thomas Sun (tom dot ssf at gmail dot com)
> * Yaliang Wang (yaliang dot w dot wang at ieee dot org)
> 
> ## Affiliations
> 
> * Andrew Jorgensen (Google)
> * Ashvin Agrawal (Microsoft)
> * Avrilia Floratou (Microsoft)
> * Bill Graham (Twitter)
> * Brian Hatfield (Google)
> * Chris Kellogg (Twitter)
> * Huijun Wu (Twitter)
> * Karthik Ramasamy (Streamlio)
> * Maosong Fu (Twitter)
> * Neng Lu (Twitter)
> * Runhang Li (Twitter)
> * Sanjeev Kulkarni (Streamlio)
> * Supun Kamburugamuve (Indiana University)
> * Thomas Sun (Twitter)
> * Yaliang Wang (Twitter)
> 
> ## Sponsors
> 
> ### Champion
> 
> * Julien Le Dem (julien at apache dot org)
> 
> ### Nominated Mentors
> 
> * Jake Farrell (jfarrell at apache dot org)
> * Jacques Nadeau (jacques at apache dot org)
> * Julien Le Dem (julien at apache dot org)
> 
> ### Sponsoring Entity
> 
> The Apache Incubator
> 
> ### Footnotes
> 
> 1 - Papers detailing Heron are available at http://dl.acm.org/citation.
> cfm?id=2742788 and http://sites.computer.org/debull/A15dec/p15.pdf.
> 2 - http://home.apache.org/phonebook.html?uid=billgraham
> 3 - http://home.apache.org/phonebook.html?uid=ashvin
> 4 - http://home.apache.org/phonebook.html?uid=supun

---------------------------------------------------------------------
To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
For additional commands, e-mail: general-help@incubator.apache.org