[jira] [Assigned] (SPARK-10541) Allow ApplicationHistoryProviders to provide their own text when there aren't any complete apps

["Apache Spark (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-10541?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-10541:
------------------------------------

    Assignee: Apache Spark

> 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
>            Assignee: Apache Spark
>            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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