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https://issues.apache.org/jira/browse/SPARK-21081?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16050256#comment-16050256
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Filipp Zhinkin commented on SPARK-21081:
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It's not always an option to call isStopped.
> Throw specific IllegalStateException subtype when asserting that SparkContext
> not stopped
> -----------------------------------------------------------------------------------------
>
> Key: SPARK-21081
> URL: https://issues.apache.org/jira/browse/SPARK-21081
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 2.1.1
> Reporter: Filipp Zhinkin
> Priority: Minor
>
> org.apache.spark.SparkContext.assertNotStopped throws IllegalStateException
> if the context was stopped.
> Unfortunately, it is not so easy to distinguish IAE caused by a stopped
> context from some other failed assertion and handle it properly (start a new
> context, for example).
> I'm suggesting to add a specific IllegalStateException subclass
> (SparkContextClosedException) and start throwing it.
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