[ANNOUNCE] Weekly Community Update 2020/35

[Konstantin Knauf-4]

Dear community,

happy to share a brief community update for the past week with configurable
memory sharing between Flink and its Python "side car", stateful Python
UDFs, an introduction of our GSoD participants and a little bit more.

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

* [datastream api] Dawid has started a vote to remove DataStream#fold and
DataStream#split (both already deprecated) in Flink 1.12. [1]

* [runtime] Xintong has started a discussion thread for "Intra-Slot
Management Memory Sharing", which lets users configure the fraction of
managed memory that should be used by Flink internally (RocksDB or Batch
algorithms) on the one side and the Python process on the other side. [2]

* [python] Wei Zhon has started discussion for FLIP-139, which aims to add
support for *stateful *Python UDFs for the Table API/SQL. So far, only
stateless functions are supported. [3]

* [documentation] Kartik Khare and Mohammad Haseeb Asif will work with the
Apache Flink Community to improve the documentation of Flink SQL as part of
their participation in Google Season of Docs 2020. [4]

[1]
http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/VOTE-Remove-deprecated-DataStream-fold-and-DataStream-split-in-1-12-tp44229.html
[2]
http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/DISCUSS-FLIP-141-Intra-Slot-Managed-Memory-Sharing-tp44146.html
[3]
http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/DISCUSS-FLIP-139-General-Python-User-Defined-Aggregate-Function-on-Table-API-tp44139.html
[4]
http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/ANNOUNCE-Introducing-the-GSoD-2020-Participants-tp44144.html

flink-packages.org
==============

* fabricalab has published a DynamoDB streaming source on flink-packages.org.
[5]

[5] https://flink-packages.org/packages/streaming-flink-dynamodb-connector

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

* [FLINK-18934] [1.11.1] Flink's mechanism to deal with idle
sources/partitions introduced in Flink 1.11 [6] does not currently work
with co-functions, union or joins. [7]

[6]
https://ci.apache.org/projects/flink/flink-docs-release-1.11/dev/event_timestamps_watermarks.html#dealing-with-idle-sources
[7] https://issues.apache.org/jira/browse/FLINK-18934

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

* Dian Fu is now part of the Apache Flink PMC. Congratulations! [8]

[8]
http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/ANNOUNCE-New-PMC-member-Dian-Fu-tp44170p44240.html

Cheers,

Konstantin

--

Konstantin Knauf

https://twitter.com/snntrable

https://github.com/knaufk