Steve Loughran created SPARK-10541:
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Summary: Allow ApplicationHistoryProviders to provide their own
text when there aren't any complete apps
Key: SPARK-10541
URL: https://issues.apache.org/jira/browse/SPARK-10541
Project: Spark
Issue Type: Improvement
Components: Web UI
Affects Versions: 1.5.0
Reporter: Steve Loughran
Priority: Minor
The current History Server text when there are no complete apps is hard coded
for the FS provider and talks about log directories. As it is static text, it
doesn't get any recent information from that FS provider itself, such as the
directory it is looking at.
For other ApplicationHistoryProviders, there will be different reasons
for the list being empty, including, in the timeline implementation: failure to
talk to the server, authentication failure, or simply no events being present.
Even {{FsHistoryProvider}} could help users by actually printing what the log
directory was.
If a method {{emptyListingText()}} `was supported, each implementation could
provide a live explanation of the current state
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