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https://issues.apache.org/jira/browse/SPARK-18085?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16345615#comment-16345615
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Marcelo Vanzin commented on SPARK-18085:
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If you want the short and dirty description: these changes decouple the
application status data storage from the UI code, and allow different ways for
storing the status data. Shipped with 2.3 are in-memory and disk storage
options. This allows the SHS to use disk-based storage to use less memory and
serve data more quickly when restarted.
> SPIP: Better History Server scalability for many / large applications
> ---------------------------------------------------------------------
>
> Key: SPARK-18085
> URL: https://issues.apache.org/jira/browse/SPARK-18085
> Project: Spark
> Issue Type: Umbrella
> Components: Spark Core, Web UI
> Affects Versions: 2.0.0
> Reporter: Marcelo Vanzin
> Priority: Major
> Labels: SPIP
> Fix For: 2.3.0
>
> Attachments: screenshot-1.png, screenshot-2.png, spark_hs_next_gen.pdf
>
>
> It's a known fact that the History Server currently has some annoying issues
> when serving lots of applications, and when serving large applications.
> I'm filing this umbrella to track work related to addressing those issues.
> I'll be attaching a document shortly describing the issues and suggesting a
> path to how to solve them.
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