Hi. 
What kind of problems and what configuration should we be aware of.?

Med venlig hilsen / Best regards
Lasse Nedergaard


> Den 23. apr. 2018 kl. 13.44 skrev Jörn Franke <jornfra...@gmail.com>:
> 
> I would disable it if possible and use the Flink  parallism. The threading 
> might work but can create operational issues depending on how you configure 
> your resource manager.
> 
>> On 23. Apr 2018, at 11:54, Alexander Smirnov <alexander.smirn...@gmail.com> 
>> wrote:
>> 
>> Hi,
>> 
>> I have a co-flatmap function which reads data from external DB on specific 
>> events.
>> The API for the DB layer is homegrown and it uses multiple threads to speed 
>> up reading. 
>> 
>> Can it cause any problems if I use the multithreading API in the flatmap1 
>> function? Is it allowed in Flink?
>> 
>> Or, maybe I should employ better approaches for that. May be async I/O? 
>> 
>> Thank you,
>> Alex

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