Paul Lin created FLINK-32315:
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Summary: Support local file upload in K8s mode
Key: FLINK-32315
URL: https://issues.apache.org/jira/browse/FLINK-32315
Project: Flink
Issue Type: New Feature
Components: Client / Job Submission, Deployment / Kubernetes
Reporter: Paul Lin
Currently, Flink assumes all resources are locally accessible in the pods,
which requires users to prepare the resources by mounting storages, downloading
resources with init containers, or rebuilding images for each execution.
We could make things much easier by introducing a built-in file distribution
mechanism based on Flink-supported filesystems. It's implemented in two steps:
1. KubernetesClusterDescripter uploads all local resources to remote storage
via Flink filesystem (skips if the resources are already remote).
2. KubernetesApplicationClusterEntrypoint and KubernetesTaskExecutorRunner
download the resources and put them in the classpath during startup.
The 2nd step is mostly done by
[FLINK-28915|https://issues.apache.org/jira/browse/FLINK-28915], thus this
issue is focused on the upload part.
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