Hi Faéze
Thank you for providing the detailed description and attachments.
In Flink, the actual file reading operation is performed by the
TaskManager, not the JobManager.
Although you copied the file into the JobManager container, the TaskManager
is the one that attempts to access /opt/input.txt
Dear Flink Community,
I'm currently working on a simple Apache Flink project inside Docker using
version 1.15.2. The goal of the project is to read user transactions from a
text file (`input.txt`), calculate the total transaction amount per user, and
write the result as a CSV.
My code uses this
