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Community & Project Info

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How do I get help from Apache Flink?

There are many ways to get help from the Apache Flink community. The mailing lists are the primary place where all Flink committers are present. For user support and questions use the user mailing list. You can also join the community on Slack. Some committers are also monitoring Stack Overflow. Please remember to tag your questions with the apache-flink tag. Bugs and feature requests can either be discussed on the dev mailing list or on [Jira]({{ site.jira }}). Those interested in contributing to Flink should check out the contribution guide.

Mailing Lists

Name Subscribe Digest Unsubscribe Post Archive
news@flink.apache.org
News and announcements from the Flink community 		Subscribe Subscribe Unsubscribe Read only list Archives
community@flink.apache.org
Broader community discussions related to meetups, conferences, blog posts and job offers 		Subscribe Subscribe Unsubscribe Post Archives
user@flink.apache.org
User support and questions mailing list 		Subscribe Subscribe Unsubscribe Post Archives
user-zh@flink.apache.org
Chinese user support and questions mailing list 		Subscribe Subscribe Unsubscribe Post Archives
dev@flink.apache.org
Development related discussions 		Subscribe Subscribe Unsubscribe Post Archives
builds@flink.apache.org
Build notifications of Flink main repository 		Subscribe Subscribe Unsubscribe Read only list Archives
issues@flink.apache.org
Mirror of all Jira activity 		Subscribe Subscribe Unsubscribe Read only list Archives
commits@flink.apache.org
All commits to our repositories 		Subscribe Subscribe Unsubscribe Read only list Archives

Please make sure you are subscribed to the mailing list you are posting to! If you are not subscribed to the mailing list, your message will either be rejected (dev@ list) or you won't receive the response (user@ list).

How to subscribe to a mailing list

Before you can post a message to a mailing list, you need to subscribe to the list first.

  1. Send an email without any contents or subject to listname[email protected]. (replace listname with dev, user, user-zh, ..)
  2. Wait till you receive an email with the subject "confirm subscribe to listname@flink.apache.org". Reply to that email, without editing the subject or including any contents
  3. Wait till you receive an email with the subject "WELCOME to listname@flink.apache.org".

If you send us an email with a code snippet, make sure that:

  1. you do not link to files in external services as such files can change, get deleted or the link might break and thus make an archived email thread useless
  2. you paste text instead of screenshots of text
  3. you keep formatting when pasting code in order to keep the code readable
  4. there are enough import statements to avoid ambiguities

Slack

You can join the Apache Flink community on Slack. After creating an account in Slack, don't forget to introduce yourself in #introductions. Due to Slack limitations the invite link expires after 100 invites. If it is expired, please reach out to the Dev mailing list. Any existing Slack member can also invite anyone else to join.

There are a couple of community rules:

  • Be respectful - This is the most important rule!
  • All important decisions and conclusions must be reflected back to the mailing lists. "If it didn’t happen on a mailing list, it didn’t happen." - The Apache Mottos
  • Use Slack threads to keep parallel conversations from overwhelming a channel.
  • Please do not direct message people for troubleshooting, Jira assigning and PR review. These should be picked-up voluntarily.

Note: All messages from public channels in our Slack are permanently stored and published in the Apache Flink Slack archive on linen.dev. The purpose of this archive is to allow search engines to find past discussions in the Flink Slack.

Stack Overflow

Committers are watching Stack Overflow for the apache-flink tag.

Make sure to tag your questions there accordingly to get answers from the Flink community.

Issue Tracker

We use Jira to track all code related issues: [{{ site.jira }}]({{ site.jira }}). You must have a JIRA account in order to log cases and issues.

I already have an ASF JIRA account and want to be added as a contributor

If you already have an ASF JIRA account, you do not need to sign up for a new account. Please email [email protected] using the following template, so that we can add your account to the contributors list in JIRA:

Open the template in your email client

Subject: Add me as a contributor to JIRA

Hello,

Please add me as a contributor to JIRA.
My JIRA username is: [INSERT YOUR JIRA USERNAME HERE]

Thanks,
[INSERT YOUR NAME HERE]

I do not have an ASF JIRA account, want to request an account and be added as a contributor

In order to request an ASF JIRA account, you will need to email [email protected] using the following template:

Open the template in your email client

Subject: Request for JIRA Account

Hello,

I would like to request a JIRA account.
My proposed JIRA username: [INSERT YOUR DESIRED JIRA USERNAME HERE (LOWERCASE LETTERS AND NUMBERS ONLY)]
My full name: [INSERT YOUR FULL NAME HERE]
My email address: [INSERT YOUR EMAIL ADDRESS HERE]

Thanks,
[INSERT YOUR NAME HERE]

All issue activity is also mirrored to the issues mailing list.

Reporting Security Issues

If you wish to report a security vulnerability, please contact [email protected]. Apache Flink follows the typical Apache vulnerability handling process for reporting vulnerabilities. Note that vulnerabilities should not be publicly disclosed until the project has responded.

Meetups

There are plenty of meetups on meetup.com featuring Flink.

Source Code

Main Repositories

Complete List of Repositories

The complete list of repositories of Apache Flink can be found under https://gitbox.apache.org/repos/asf#flink.

Training

Ververica currently maintains free Apache Flink training. Their training website has slides and exercises with solutions. The slides are also available on SlideShare.

Project Wiki

The Apache Flink project wiki contains a range of relevant resources for Flink users. However, some content on the wiki might be out-of-date. When in doubt, please refer to the Flink documentation.

Flink Forward

Flink Forward is a conference happening yearly in different locations around the world. Up to date information about the conference is available on Flink-Forward.org.

People

The list below could be outdated. Please find the most up-to-date list here.

Name Role Apache ID
David Anderson Committer danderson
Márton Balassi PMC, Committer mbalassi
Paris Carbone Committer senorcarbone
Ufuk Celebi PMC, Committer uce
Shuyi Chen Committer shuyichen
Zili Chen Committer tison
Hequn Cheng PMC, Committer hequn
Danny Cranmer PMC, Committer dannycranmer
Xingcan Cui Committer xccui
Stephan Ewen PMC, Committer, VP sewen
Gyula Fóra PMC, Committer gyfora
Dian Fu PMC, Committer dianfu
Alan Gates PMC, Committer gates
Greg Hogan PMC, Committer greg
Xingbo Huang Committer hxb
Fabian Hueske PMC, Committer fhueske
Vasia Kalavri PMC, Committer vasia
Kostas Kloudas PMC, Committer kkloudas
Konstantin Knauf PMC, Committer knaufk
Aljoscha Krettek PMC, Committer aljoscha
Nico Kruber Committer nkruber
Jingsong Lee PMC, Committer lzljs3620320
Bowen Li Committer bli
ChengXiang Li Committer chengxiang
Andra Lungu Committer andra
Yuan Mei PMC, Committer yuanmei
Robert Metzger PMC, Committer rmetzger
Maximilian Michels PMC, Committer mxm
Chiwan Park Committer chiwanpark
Qingsheng Ren Committer renqs
Stefan Richter Committer srichter
Till Rohrmann PMC, Committer trohrmann
Rong Rong Committer rongr
Henry Saputra PMC, Committer hsaputra
Matthias J. Sax Committer mjsax
Sebastian Schelter PMC, Committer ssc
Chesnay Schepler PMC, Committer chesnay
Xiaogang Shi Committer shixg
Xintong Song PMC, Committer xtsong
Jincheng Sun PMC, Committer jincheng
Tzu-Li (Gordon) Tai PMC, Committer tzulitai
Kostas Tzoumas PMC, Committer ktzoumas
Theodore Vasiloudis Committer tvas
Timo Walther PMC, Committer twalthr
Feng Wang Committer fengwang
Yangze Guo Committer guoyangze
Shaoxuan Wang PMC, Committer shaoxuan
Zhijiang Wang PMC, Committer zhijiang
Daniel Warneke PMC, Committer warneke
Jark Wu PMC, Committer jark
Dawid Wysakowicz PMC, Committer dwysakowicz
Gary Yao Committer gary
Kurt Young PMC, Committer kurt
Andrey Zagrebin Committer azagrebin
Yu Li PMC, Committer liyu
Seth Wiesman Committer sjwiesman
Congxian Qiu Committer klion26
Godfrey He Committer godfrey
Yun Tang Committer tangyun
Wei Zhong Committer weizhong
Zhu Zhu PMC, Committer zhuzh
Igal Shilman PMC, Committer igalshilman
Benchao Li Committer libenchao
Martijn Visser PMC, Committer martijnvisser
Leonard Xu Committer leonard
Jing Zhang Committer jingzhang
Yang Wang PMC, Committer wangyang0918
Shengkai Fang Committer shengkai
Dong Lin Committer lindong
Lincoln Lee Committer lincoln

You can reach committers directly at <apache-id>@apache.org. A list of all contributors can be found [here]({{ site.FLINK_CONTRIBUTORS_URL }}).

Former mentors

The following people were very kind to mentor the project while in incubation.

Name Role Apache ID
Ashutosh Chauhan Former PPMC, Mentor hashutosh
Ted Dunning Former PPMC, Mentor tdunning
Alan Gates Former PPMC, Mentor gates
Owen O'Malley Former PPMC, Mentor omalley
Sean Owen Former PPMC, Mentor srowen
Henry Saputra Former PPMC, Mentor hsaputra

Materials / Apache Flink Logos

The [materials page]({{ site.baseurl }}/material.html) offers assets such as the Apache Flink logo in different image formats, or the Flink color scheme.