[jira] [Created] (SPARK-41551) Improve/complete PathOutputCommitProtocol support for dynamic partitioning

["Steve Loughran (Jira)" <ji...@apache.org>]

Steve Loughran created SPARK-41551:
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             Summary: Improve/complete PathOutputCommitProtocol support for dynamic partitioning
                 Key: SPARK-41551
                 URL: https://issues.apache.org/jira/browse/SPARK-41551
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.3.1
            Reporter: Steve Loughran


Followup to SPARK-40034 as 
* that is incomplete as it doesn't record the partitions
* as long at the job doesn't call `newTaskTempFileAbsPath()`, and slow renames are ok, both s3a committers are actually OK to use.

It's only that newTaskTempFileAbsPath operation which is unsupported in s3a committers; the post-job dir rename is O(data) but file by file rename is correct for a non-atomic job commit.

# Cut PathOutputCommitProtocol.newTaskTempFile; to update super partitionPaths (needs a setter). The superclass can't just say if (committer instance of PathOutputCommitter as spark-core needs to compile with older hadoop versions)
# downgrade failure in setup to log (info?)
# retain failure in the newTaskTempFileAbsPath call.

Testing: yes




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