[SPARK-52808][CORE] spark.history.retainedApplications should be positive
#51504
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What changes were proposed in this pull request?
This PR aims to add a config value validation for
spark.history.retainedApplicationsWhy are the changes needed?
To prevent a misleading situation from the beginning.
For example, in case of
spark.history.retainedApplications=0, Apache Spark shows a job list, but unable to show a job withToo many redirects...messages. Although this is not a Spark job, a user may be confused that this is a Spark bug.Does this PR introduce any user-facing change?
No. Previously, SHS didn't work correctly already.
How was this patch tested?
Pass the CIs.
Since this is a check at SparkConf level, the failure happens before SparkHistory server is created. So, we cannot add a test case for this one to HistoryServerSuite.
We can test it manually like the following.
SparkHistoryServerstops at the beginning.Was this patch authored or co-authored using generative AI tooling?
No.