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https://issues.apache.org/jira/browse/SPARK-11328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15431275#comment-15431275
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Yin Huai commented on SPARK-11328:
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Actually, the JIRA is meant to provide more information in the error message
(see
https://github.com/apache/spark/pull/10080/files#diff-244a70a91841bbddf6fae17c14c18ce4R137).
This jira does not aim to get rid of the file already exists error.
> Provide more informative error message when direct parquet output committer
> is used and there is a file already exists error.
> -----------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-11328
> URL: https://issues.apache.org/jira/browse/SPARK-11328
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Yin Huai
> Assignee: Nong Li
> Priority: Critical
> Fix For: 1.5.3, 1.6.0
>
>
> When saving data to S3 (e.g. saving to parquet), if there is an error during
> the query execution, the partial file generated by the failed task will be
> uploaded to S3 and the retries of this task will throw file already exist
> error. It is very confusing to users because they may think that file already
> exist error is the error causing the job failure. They can only find the real
> error in the spark ui (in the stage page).
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