UpdateApplication action isn't reloading application code - Managed Service for Apache Flink
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Amazon Managed Service for Apache Flink was previously known as Amazon Kinesis Data Analytics for Apache Flink.

UpdateApplication action isn't reloading application code

The UpdateApplication action will not reload application code with the same file name if no S3 object version is specified. To reload application code with the same file name, enable versioning on your S3 bucket, and specify the new object version using the ObjectVersionUpdate parameter. For more information about enabling object versioning in an S3 bucket, see Enabling or Disabling Versioning.