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https://issues.apache.org/jira/browse/SPARK-11794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-11794.
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Resolution: Incomplete
> Improve error message when HDFS/S3 access is misconfigured when using Parquet
> -----------------------------------------------------------------------------
>
> Key: SPARK-11794
> URL: https://issues.apache.org/jira/browse/SPARK-11794
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 1.6.0
> Reporter: Mark Grover
> Priority: Major
> Labels: bulk-closed
>
> I had a scenario where I was accessing HDFS from a node set up for secure
> HDFS access. However, my actual HDFS cluster was set up in non-secure mode.
> This mismatch of configuration didn't allow me to access HDFS. However, when
> running a Spark app on some Parquet data on the said inaccessible HDFS, one
> gets a message like this:
> {code}
> java.lang.AssertionError: assertion failed: No predefined schema found, and
> no Parquet data files or summary files found under
> {code}
> Which is very misleading. And, I am not the only one this has happened to.
> See SPARK-9565 for another similar situation.
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