Github user zentol commented on the pull request:
https://github.com/apache/flink/pull/1790#issuecomment-198348202
the files are currently loaded twice. First, the logs are copied from the
Taskmanager to the JobManager blob store. They are then copied again from the
JobManager blob store to the TaskmanagerLogHandler BlobCache. This was
@tillrohrmann idea, and is meant to make the handler easier to change when the
Dashboard and JobManager are separated.
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