Cheng Lian created SPARK-8578:
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Summary: Should ignore user defined output committer when
appending data
Key: SPARK-8578
URL: https://issues.apache.org/jira/browse/SPARK-8578
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 1.4.0
Reporter: Cheng Lian
Assignee: Yin Huai
When appending data to a file system via Hadoop API, it's safer to ignore user
defined output committer classes like {{DirectParquetOutputCommitter}}. Because
it's relatively hard to handle task failure in this case. For example,
{{DirectParquetOutputCommitter}} directly writes to the output directory to
boost write performance when working with S3. However, there's no general way
to determine task output file path of a specific task in Hadoop API, thus we
don't know to revert a failed append job. (When doing overwrite, we can just
remove the whole output directory.)
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