Question about jobmanager.web.upload.dir

[Mauro Cortellazzi]

Hi Flink comunity,

is there a particular reason to delete the jobmanager.web.upload.dir 
content when the JobManager restart? Could it be interesting have the 
jar previously uploaded when JM restart? Could the jars be saved to HDFS 
for HA mode?

Thank you for your support.

Mauro