Michael Armbrust created SPARK-8315:
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Summary: Better error when saving to parquet with duplicate columns
Key: SPARK-8315
URL: https://issues.apache.org/jira/browse/SPARK-8315
Project: Spark
Issue Type: Sub-task
Components: SQL
Reporter: Michael Armbrust
Priority: Critical
Parquet allows you to silently write out files with duplicate column names and
then emits a very confusing error when trying to read the data back in:
{{{
Error in SQL statement: java.lang.RuntimeException:
org.apache.spark.SparkException: Job aborted due to stage failure: Task 4 in
stage 21.0 failed 4 times, most recent failure: Lost task 4.3 in stage 21.0
(TID 2767, ip-10-0-253-59.ec2.internal): parquet.io.ParquetDecodingException:
Can not read value at 0 in block -1 in file ...
}}}
We should throw a better error before attempting to write out an invalid file.
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