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Posted to issues@spark.apache.org by "Hyukjin Kwon (JIRA)" <ji...@apache.org> on 2019/05/21 04:35:27 UTC
[jira] [Resolved] (SPARK-11794) Improve error message when HDFS/S3
access is misconfigured when using Parquet
[ https://issues.apache.org/jira/browse/SPARK-11794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
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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