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https://issues.apache.org/jira/browse/SPARK-39225?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-39225:
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Assignee: Apache Spark
> History Server initial scan may block new eventlog update
> ---------------------------------------------------------
>
> Key: SPARK-39225
> URL: https://issues.apache.org/jira/browse/SPARK-39225
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 3.0.3, 3.1.2, 3.2.1
> Reporter: Hai Tao
> Assignee: Apache Spark
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.0.3, 3.1.2, 3.2.1
>
> Original Estimate: 72h
> Remaining Estimate: 72h
>
> Current Spark History Server suffers when there are a large number of
> eventlog files under eventLog.dir: when a SHS starts, the initial scan may
> take a long time, and new eventlog files would not be scanned/parsed until
> the initial scan completes.
> For example, if the initial scan takes 1-2 days(this is not uncommon in large
> environments), the newly finished spark jobs would not show up in SHS since
> their eventlog files are not scanned/parsed until the initial scan process
> finishes. This would result in a 1-2 days SHS malfunctioning since the newly
> finished spark jobs are most likely to be queried by users.
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