[ANNOUNCE] Weekly Community Update 2019/30

[Konstantin Knauf-3]

Dear community,

happy to share this week's community update with news about a Flink on
PyPi, two proposal on the Table API/SQL and a bit more.

As always, please feel free to add additional updates and news to this
thread!

Flink Development
===============

[sql] *Temporary tables* are always registered with the built-in catalog.
If the built-in catalog is not the default catalog, access to temporary
tables needs to be fully qualified, which breaks current functionality,
e.g. in the SQL Client. Dawid and Bowen stumbled across this during release
testing and are proposing three different solutions for the upcoming
release and beyond [1]

[python] The discussion on how to release (and if) to release the *Python
Table API on PyPi *is converging to publish it under the name
"apache-flink" and to include the binary Java/Scala release in the Python
package for convenience. [2]

[fault-tolerance] In the discussion thread about supporting *"at-most-once"*
delivery Stephan proposed to work towards this feature outside of Flink
core and to offer it to the community through the upcoming Flink ecosystem
website. This seems to get a lot of agreement. [3]

[table-api] Xuannan has started a discussion on *"FLIP-48: Pluggable
Intermediate Result Storage"*. This will make the result cache for
interactive programming (FLIP-36] pluggable. [4]

[releases] Flink 1.9.0 release testing is still ongoing. There is no RC1
yet. [5]

[1]
http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/DISCUSS-Support-temporary-tables-in-SQL-API-tp30831.html
[2]
http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/DISCUSS-Publish-the-PyFlink-into-PyPI-td30095.html
[3]
http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/DISCUSS-Allow-at-most-once-delivery-in-case-of-failures-tp29464.html
[4]
http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/DISCUSS-FLIP-48-Pluggable-Intermediate-Result-Storage-tp31001.html
[5]
http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/ANNOUNCE-Progress-updates-for-Apache-Flink-1-9-0-release-tp30565.html
<https://issues.apache.org/jira/secure/RapidBoard.jspa?rapidView=328&projectKey=FLINK&selectedIssue=FLINK-13249>

Notable Bugs
===========

Not to much. Still a lot of blockers and critical issues in the Flink
project due to release testing.

* [FLINK-13372] [1.8.1] [1.7.2] [1.6.4] There is a bug in the timestamp
conversion of the Table API (due to timezone handling, of course). The
issue contains a good explanation of the problem. [6]

[6] https://issues.apache.org/jira/browse/FLINK-13372

Events, Blog Posts, Misc
====================

* *Kurt* is now part of the Apache Flink PMC. Congratulations! [7]
* *Zhijiang* is now an Apache Flink committer. Congrats! [8]
* Upcoming Meetups
    * On 30th of July *Berecz Dániel *of Ekata talks about a "Parameter
Server on Flink, an approach for model-parallel machine learning" at the
Budapest Scala Meetup [9]
    * On 30th of *July Grzegorz *Liter talks about “Stream processing with
Apache Flink”  at the EPAM tech talks in Wroclaw. [10]

[7]
http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/ANNOUNCE-Kete-Young-is-now-part-of-the-Flink-PMC-tp30884p30998.html
[8]
http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/ANNOUNCE-Zhijiang-Wang-has-been-added-as-a-committer-to-the-Flink-project-tp30830p30943.html
[9] https://www.meetup.com/budapest-scala/events/263025323/
[10] https://www.meetup.com/EPAM-Tech-Talks-Wroc%C5%82aw/events/263027190/

Cheers,

Konstantin (@snntrable)

--

Konstantin Knauf | Solutions Architect

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