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https://issues.apache.org/jira/browse/SPARK-17193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-17193.
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Resolution: Fixed
Fix Version/s: 2.1.0
2.0.1
Issue resolved by pull request 14760
[https://github.com/apache/spark/pull/14760]
> HadoopRDD NPE at DEBUG log level when getLocationInfo == null
> -------------------------------------------------------------
>
> Key: SPARK-17193
> URL: https://issues.apache.org/jira/browse/SPARK-17193
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 2.0.0
> Reporter: Sean Owen
> Assignee: Sean Owen
> Priority: Trivial
> Fix For: 2.0.1, 2.1.0
>
>
> When I set the log level to "DEBUG" in one of my apps that reads from
> Parquet, I notice several NullPointerExceptions logged from
> HadoopRDD.getPreferredLocations.
> It doesn't affect executions as it just results in "no preferred locations".
> It happens when InputSplitWithLocationInfo.getLocationInfo produces null,
> which it may. The code just dereferences it however.
> It's cleaner to check this directly (and maybe tighten up the code slightly)
> and avoid polluting the log, though, it's just at debug level. No big deal,
> but enough of an annoyance when I was debugging something that it's probably
> worth zapping.
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