Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/16517#discussion_r96131580
--- Diff:
core/src/main/scala/org/apache/spark/internal/io/HadoopMapReduceCommitProtocol.scala
---
@@ -99,7 +99,7 @@ class HadoopMapReduceCommitProtocol(jobId: String, path:
String)
}
private def getFilename(taskContext: TaskAttemptContext, ext: String):
String = {
- // The file name looks like
part-r-00000-2dd664f9-d2c4-4ffe-878f-c6c70c1fb0cb_00003.gz.parquet
+ // The file name looks like
part-00000-2dd664f9-d2c4-4ffe-878f-c6c70c1fb0cb_00003.gz.parquet
--- End diff --
After more reading, the exist hive table writers do not have such an issue.
It is based on a unique ID
[`TaskAttemptID`](https://hadoop.apache.org/docs/r2.6.3/api/org/apache/hadoop/mapreduce/TaskAttemptID.html),
which is generated by the function call of `FileOutputFormat.getTaskOutputPath`
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