Github user zsxwing commented on the pull request:
https://github.com/apache/spark/pull/10966#issuecomment-176318629
I remember @tdas was considering the scalability of this approach.
Replaying event logs for a long running Streaming application is terrible.
Ideally, there should be a snapshot mechanism to dump the current UI status
periodically and drop old event logs so that we don't need to replay event logs
from the beginning.
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