Mark Grover created SPARK-11794:
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Summary: 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
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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