[GitHub] [spark] dongjoon-hyun commented on a change in pull request #30141: [SPARK-33230][SQL] Hadoop committers to get unique job ID in "spark.sql.sources.writeJobUUID"

[GitBox <gi...@apache.org>]

dongjoon-hyun commented on a change in pull request #30141:
URL: https://github.com/apache/spark/pull/30141#discussion_r510985437



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File path: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileFormatWriter.scala
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@@ -164,6 +164,10 @@ object FileFormatWriter extends Logging {
 
     SQLExecution.checkSQLExecutionId(sparkSession)
 
+    // propagate the decription UUID into the jobs, so that committers
+    // get an ID guaranteed to be unique.
+    job.getConfiguration.set("spark.sql.sources.writeJobUUID", description.uuid)

Review comment:
       Do you mean Apache Hadoop S3A committer use this? `spark.sql.sources.writeJobUUID` is not used inside Spark code base.




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