Hai Tao created SPARK-39225:
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Summary: 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: 3.2.1, 3.1.2, 3.0.3
Reporter: Hai Tao
Fix For: 3.2.1, 3.1.2, 3.0.3
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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